Fibrosis is the thickening of various tissues caused by the deposition of fibrillar extracellular matrix (ECM) in tissues and organs as part of the bodys wound healing response to various forms of damage. When accompanied by chronic inflammation, fibrosis can go into overdrive and produce excess scar tissue that can no longer be degraded. This process causes many diseases in multiple organs, including lung fibrosis induced by smoking or asbestos, liver fibrosis induced by alcohol abuse, and heart fibrosis often following heart attacks. Fibrosis can also occur in the bone marrow, the spongy tissue inside some bones that houses blood-producing hematopoietic stem cells (HSCs) and can lead to scarring and the disruption of normal functions.

Chronic blood cancers known as myeloproliferative neoplasms (MPNs) are one example, in which patients can develop fibrotic bone marrow, or myelofibrosis, that disrupts the normal production of blood cells. Monocytes, a type of white blood cell belonging to the group of myeloid cells, are overproduced from HSCs in neoplasms and contribute to the inflammation in the bone marrow environment, or niche. However, how the fibrotic bone marrow niche itself impacts the function of monocytes and inflammation in the bone marrow was unknown.

Now, a collaborative team from Penn, Harvard, the Dana-Farber Cancer Institute (DFCI), and Brigham and Womens Hospital has created a programmable hydrogel-based in vitro model mimicking healthy and fibrotic human bone marrow. Combining this system with mouse in vivo models of myelofibrosis, the researchers demonstrated that monocytes decide whether to enter a pro-inflammatory state and go on to differentiate into inflammatory dendritic cells based on specific mechanical properties of the bone marrow niche with its densely packed ECM molecules. Importantly, the team found a drug that could tone down these pathological mechanical effects on monocytes, reducing their numbers as well as the numbers of inflammatory myeloid cells in mice with myelofibrosis. The findings are published in Nature Materials.

We found that stiff and more elastic slow-relaxing artificial ECMs induced immature monocytes to differentiate into monocytes with a pro-inflammatory program strongly resembling that of monocytes in myelofibrosis patients, and the monocytes to differentiate further into inflammatory dendritic cells, says co-first author Kyle Vining, who recently joined Penn. More viscous fast-relaxing artificial ECMs suppressed this myelofibrosis-like effect on monocytes. This opened up the possibility of a mechanical checkpoint that could be disrupted in myelofibrotic bone marrow and also may be at play in other fibrotic diseases. Vining will be appointed assistant professor of preventive and restorative sciences in the School of Dental Medicine and the Department of Materials Sciences in the School of Engineering and Applied Science, pending approval by Penn Dental Medicines personnel committees and the Provosts office.

Vining worked on the study as a postdoctoral fellow at Harvard in the lab of David Mooney. Our study shows that the differentiation state of monocytes, which are key players in the immune system, is highly regulated by mechanical changes in the ECM they encounter, says Mooney, who co-led the study with DFCI researcher Kai Wucherpfennig. Specifically, the ECMs viscoelasticity has been a historically under-appreciated aspect of its mechanical properties that we find correlates strongly between our in vitro and the in vivo models and human disease. It turns out that myelofibrosis is a mechano-related disease that could be treated by interfering with the mechanical signaling in bone marrow cells.

Mooney is also the Robert P. Pinkas Family Professor of Bioengineering at Harvard and leads the Wyss Institutes Immuno-Materials Platform. Wucherpfennig is director of DFCIs Center for Cancer Immunotherapy Research, professor of neurobiology at Brigham and Harvard Medical School, and an associate member of the Broad Institute of MIT and Harvard. Mooney, together with co-senior author F. Stephen Hodi, also heads the Immuno-engineering to Improve Immunotherapy (i3) Center, which aims to create new biomaterials-based approaches to enhance immune responses against tumors. The new study follows the Centers road map. Hodi is director of the Melanoma Center and The Center for Immuno-Oncology at DFCI and professor of medicine at Harvard Medical School.

Gleaning mechanical bone marrow failureThe mechanical properties of most biological materials are determined by their viscoelastic characteristics. Unlike purely elastic substances like a vibrating quartz, which store elastic energy when mechanically stressed and quickly recover to their original state once the stress is removed, slow-relaxing viscoelastic substances also have a viscous component. Like the viscosity of honey, this allows them to dissipate stress under mechanical strain by rapid stress relaxation. Viscous materials are thus fast-relaxing materials in contrast to slow-relaxing purely elastic materials.

The team developed an alginate-based hydrogel system that mimics the viscoelasticity of natural ECM and allowed them to tune the elasticity independent from other physical and biochemical properties. By tweaking the balance between elastic and viscous properties in these artificial ECMs, they could recapitulate the viscoelasticity of healthy and scarred fibrotic bone marrow, whose elasticity is increased by excess ECM fibers. Human monocytes placed into these artificial ECMs constantly push and pull at them and in turn respond to the materials mechanical characteristics.

Next, the team investigated how the mechanical characteristics of stiff and elastic hydrogels compared to those in actual bone marrow affected by myelofibrosis. They took advantage of a mouse model in which an activating mutation in a gene known as Jak2 causes MPN, pro-inflammatory signaling in the bone marrow, and development of myelofibrosis, similar to the disease process in human patients with MPN. When they investigated the mechanical properties of bone marrow in the animals femur bones, using a nanoindentation probe, the researchers measured a higher stiffness than in non-fibrotic bone marrow. Importantly, we found that the pathologic grading of myelofibrosis in the animal model was significantly correlated with changes in viscoelasticity, said co-first author Anna Marneth, who spearheaded the experiments in the mouse model as a postdoctoral fellow working with Ann Mullally, a principal investigator at Brigham and DFCI, and another senior author on the study.

Targeting dysregulated bone marrow mechanicsAn important question was whether monocytes response to the mechanical impact of the fibrotic bone marrow niche could be therapeutically targeted. The researchers focused on an isoform of the phosphoinositide 3-kinase (PI3K)-gamma protein, which is specifically expressed in monocytes and closely related immune cells. PI3K-gamma is known for regulating the assembly of a cell-stiffening filamentous cytoskeleton below the cell surface that expands in response to mechanical stress, which the team also observed in monocytes encountering a fibrotic ECM. When they added a drug that inhibits PI3K-gamma to stiff elastic artificial ECMs, it toned down their pro-inflammatory response and, when given as an oral treatment to myelofibrosis mice, significantly lowered the number of monocytes and dendritic cells in their bone marrow.

This research opens new avenues for modifying immune cell function in fibrotic diseases that are currently difficult to treat. The results are also highly relevant to human cancers with a highly fibrotic microenvironment, such as pancreatic cancer, says Wucherpfennig.

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This week, the White House held a summit on the future of Covid-19 vaccines that brought together scientists and vaccine manufacturers to discuss new vaccine technologies. Officials said that new vaccines are an urgent priority as US Covid-19 cases and hospitalizations are rising once again, vaccination rates are hitting a plateau, Covid-19 funding is running low, and the virus itself is continuing to mutate.

But in recent months, scientists have also learned that the immune cells that provide lasting protection known as memory B cells and T cells can keep the worst effects of the most recent versions of the virus at bay, even if they were trained to corral older strains of SARS-CoV-2. Vaccine researchers are expanding their focus from antibodies to these memory immune cells as the new discoveries open a path toward universal coronavirus vaccines.

Universal vaccines, however, are still a long way off possibly years drawing on approaches never used before. Thats a scientific challenge, said Anthony Fauci, chief medical adviser to the president, during the summit.

The good news is that far fewer people are dying from the disease compared to the wave of cases this past winter spurred by the omicron variant of SARS-CoV-2, the virus that causes Covid-19. The first round of Covid-19 vaccines is still holding death rates down to around 360 per day, according to the Centers for Disease Control and Prevention. Still, health officials want to do better.

While the vaccines are terrific, hundreds of Americans, thousands of people around the world are still dying every day, Ashish Jha, the White House Covid-19 response coordinator, said Tuesday. Building a new generation of vaccines will make an enormous difference to bringing this pandemic to an end.

The National Institutes of Health is already funding several research teams developing Covid-19 vaccines that elicit protection against many different versions of the virus, shield against future changes to the virus before they arise, and protect against other coronaviruses.

From there, health officials are aiming not just to develop vaccines that provide more durable protection against a wider array of threats, but also rethinking the vaccination strategy overall. With a better understanding of long-term immunity, more robust vaccines, and a comprehensive public health approach, health officials say they have a better shot at restoring normalcy.

Much of the discussion around vaccines and immunity to Covid-19 centers on antibodies, proteins produced by the immune system that attach to the virus. And indeed, they are important.

Antibodies that prevent the virus from causing an infection in the first place are called neutralizing antibodies. A high concentration of antibodies in the body that blocks SARS-CoV-2 is a key indicator of good protection against reinfection. Antibodies can also serve as a way to mark intruders so that other immune system cells can dispose of them.

But making large quantities of antibodies takes a lot of resources from the body, so their production tapers off with time after an infection or a vaccination. Another concern is that antibodies are very particular about where they attach to the virus. If the virus has a mutation at that attachment site called an epitope antibodies have a harder time recognizing the pathogen. Thats why some antibody-based treatments for Covid-19 are a lot less effective at stopping the omicron subvariants.

Fortunately, the immune system has other tools in its chest. Inside bone marrow lie stem cells that differentiate to become B cells and T cells. Together, they form the core of the adaptive immune system, which creates a tailored response to threats. After a virus invades a cell, it hijacks its machinery to make copies of itself. White blood cells known as cytotoxic T cells, a.k.a. killer T cells, can identify the wayward cell and make it self-destruct. This mechanism doesnt prevent infections, but it stops them from growing out of control.

Another type of T cell, called a helper T cell, acts as an on switch for B cells, which are the cells that manufacture antibodies. After an infection is extinguished, some T cells and B cells turn into memory cells that stick around in parts of the body, ready to rev up if a virus dares to show up again.

So far, the adaptive immune system seems to hold up pretty well. The first round of Covid-19 vaccines was targeted against the earliest versions of the virus, so plenty of vaccinated people have had breakthrough infections, especially from the newer variants. But only a tiny fraction of those immunized have fallen severely ill or have died.

That likely means that their immune systems couldnt keep the virus out entirely, but their immune cells were able to spool up once an infection took root.

Someones neutralizing antibodies may not be up to the task, but if they have the T cell response, that may make all the difference with severe disease, said Stephen Jameson, a professor of microbiology and immunology at the University of Minnesota.

In just the past year, many studies have borne out the significance of memory B cells and T cells for long-term Covid-19 immunity and answered critical questions about whether they can respond to new variants.

Researchers have found that lower levels of memory B cells were associated with a greater risk of breakthrough infections from the delta variant. On the other hand, B cells induced by Covid-19 vaccines could reactivate months out from the initial vaccine doses to churn out antibodies.

Similarly, scientists found that T cells generated by vaccines were able to recognize SARS-CoV-2 variants like omicron months later. These data provide reasons for optimism, as most vaccine-elicited T cell responses remain capable of recognizing all known SARS-CoV-2 variants, scientists wrote in a March paper in the journal Cell.

Another study showed that Covid-19 vaccines generated strong T cell memory that protected against the virus even without neutralizing antibodies. I think the immunological memory which is induced by vaccines is pretty good and is actually sustained, said Marulasiddappa Suresh, a professor of immunology at the University of Wisconsin-Madison who co-authored the study, published in the Proceedings of the National Academy of Sciences in May.

Whether this protection will hold up over the course of years remains to be seen. Experiences with past coronaviruses like MERS showed that antibodies to the virus can last for four years. Covid-19, however, is spreading at much higher levels and mutating more than MERS did during its initial outbreak. Future protection against the disease hinges on the immune system as well as how much the virus itself will change, and scientists are closely watching both.

Most vaccines to date are designed to counter one or a handful of versions of a given virus. They present the immune system with a target that allows it to prepare its defenses should the actual virus ever invade.

In the case of Covid-19, most vaccines coach the immune system to target the spike protein of the SARS-CoV-2 virus, which it uses to start the infection process. This helps the immune system generate strong neutralizing antibodies. But the spike protein is one of the fastest mutating parts of the virus, making it a moving target.

The fact that B cells and T cells have managed to hold off newer variants hints that it may be possible to target the virus in other ways. Rather than just making neutralizing antibodies that attach to the spike, the adaptive immune system could also produce non-neutralizing antibodies that bind to other regions of the virus that mutate very little, if at all. While these antibodies may not block an infection from taking root, they may be able to provide more durable protection against severe illness that holds up against future SARS-CoV-2 variants.

Another approach is to present the immune system with a variety of different potential mutations of a virus, allowing white blood cells to prepare a response to a spectrum of threats and fill in the blanks.

Universal vaccines have not been deployed before, so researchers are in uncharted territory, and the shots likely wont be ready ahead of a potential fall spike in Covid-19 cases. But developing such a vaccine could eventually reduce the need for boosters and give health officials a head start on countering future outbreaks.

In the meantime, US health officials are planning to distribute vaccines reformulated to target newer Covid-19 variants by September, but its not clear yet what the optimal strategy will be to deploy them given the wide range of immune protection across the population. Between infections and vaccinations, the majority of people in the country have had some exposure to the virus, granting some degree of protection. And since the adaptive immune response to Covid-19 seems to be robust in most people, it may not be necessary for everyone to get an additional shot.

One option is to seek out those with weaker immune systems for boosters. Researchers have now developed a rapid test to measure T cell responses to Covid-19 that could identify people who are more vulnerable to reinfections or breakthrough infections.

Though vaccines are absorbing the most severe consequences from Covid-19, infections are still proving disruptive. Covid-19 outbreaks are contributing to staffing shortages at hospitals, schools, and airlines, leading to delays and cancellations. And the more the virus spreads, the more opportunities it has to mutate in dangerous ways. Stopping this threat requires limiting infections, which in turn still demands measures like social distancing and wearing face masks.

So as good as the next generation of vaccines may prove to be, they are only one element of a comprehensive public health strategy for containing a disease.

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How long-term Covid-19 immunity paves the way for universal Covid-19 vaccines - Vox.com

Bone Marrow Stem Cells Comments Off on How long-term Covid-19 immunity paves the way for universal Covid-19 vaccines – Vox.com | August 2nd, 2022

Mesenchymal stem cell isolation and expansion

Bone marrow-derived MSCs were isolated from young (6 weeks) and old (1824 months) C57 black male mice using established techniques42,43 under a protocol approved by the Johns Hopkins University Animal Care and Use Committee. Briefly, immediately following euthanasia, whole bone marrow was flushed out from the bilateral tibias and femurs. After washing by centrifugation at 400g for 10min, cells were plated at 5 106 viable cells per ml. The culture was kept in humidified 5% CO2 incubator at 37C for 72h, when non-adherent cells were removed by changing the media.

All MSC preparations were evaluated using flow cytometry with PE or FITC-conjugated antibodies against murine Sca-1 (1:200; BioLegend 122507), CD31 (1:200; Fisher Scientific BDB554473), CD34 (1:100; eBioscience 14-0341-82), CD44 (1:100; BioLegend 103007), CD45 (1:100; BioLegend 103105), and IgG (1:100; BioLegend 400607) performed on BD LSRII (Becton Dickinson) using DIVA software. At least 10000 events were collected. FlowJo software was used to analyze and create the histograms.

Assessment for osteogenic and adipogenic differentiation was performed using established techniques43. Briefly, to induce osteogenic differentiation, old and young MSCs were seeded into 6-well plates at 1.3 104 cells/well. After 24h the media was replaced with osteogenic differentiation medium containing Iscoves medium supplemented with 100nM dexamethasone, 10mM beta-glycerophosphate, 50 M ascorbic acid, and 1% antibiotic/antimycotic. Cells were maintained in induction media with media changes every 2 days. After 14 days cells fixed in 10% formalin for 15min and calcium deposition was assessed using von Kossa staining. Calcium deposition was then quantified using a colorimetric calcium assay (Calcium CPC Liquicolour Kit StanBio, Boerne, TX) according to the manufacturers instructions. To induce adipogenic differentiation, old and young MSCs were seeded in 6-well plates at 2 105 cells/well. When confluent the media was replaced with adipogenic induction medium containing DMEM-HG, 10% FBS, 5% rabbit serum, 1uM dexamethasone, 10g/mL insulin, 200 M indomethacin, 500 M isobutylmethylxanthine (IBMX), and antibiotic/antimycotic for 3 days followed by exposure to followed by exposure to adipogenic maintenance medium (DMEM-HG, 10% FBS, insulin 10g/ml and P/S) for 3 days. After 3 cycles of induction and maintenance exposure cells were rinsed with PBS and fixed in 10% formalin for 10min. The cells were then stained with Oil Red O to assess for lipid droplets. After imaging Oil Red O extraction was performed using 100% isopropanol. Extract samples were transferred to a 96-well plate and absorbance readings were taken at 490nm to quantify extracted Oil Red O.

Confirmed MSCs were expanded in culture in media prepared by combining 490ml Medium 200 PRF (Gibco Invitrogen, Carlsbad, CA), a standard basal medium intended for culture of large vessel human endothelial cells, with 10ml Low Serum Growth Supplement (LSGS; Gibco Invitrogen). The final preparation contained 2% fetal bovine serum (FBS), 3ng/ml basic fibroblast growth factor (bFGF), 10ng/ml human epidermal growth factor, 10g/ml heparin, and 1g/ml hydrocortisone. Cells were incubated under standard conditions (5% CO2 and 37C). Expanded MSCs at low passage numbers (P2-P5) were used for the experiments. In the event frozen cells were used, they were thawed and grown for one passage prior to use in the experiments.

To prevent cell-cell interaction and assess only paracrine-mediated effects (i.e. those resulting from release of soluble factors), angiogenesis experiments were performed using bioreactor tubes (BT) constructed with CellMax semi-permeable polysulfone membrane tubing (Spectrum Labs, Rancho Dominguez, CA). These allowed the free diffusion of soluble proteins and other molecules released by the cells up to a 500kDa molecular weight cut-off, but not of the cells themselves. To load BTs, MSCs were trypsinized and suspended in Medium 200 PRF without LSGS supplementation (i.e. media devoid of stimulatory growth factors). MSCs were counted using a Scepter automated cell counter (Millipore, Billerica, MA), which had been previously standardized for accuracy. The desired number of MSCs was spun down and resuspended to a total volume of 100 ul that was injected into the BTs using a 0.5mL syringe. To compare paracrine-mediated angiogenesis by old and young MSCs, BTs were loaded with either 105 old or 105 young MSCs. Once cell injection was complete, the tubes were heat-sealed at both ends and the MSC-loaded tubes, fully submerged in media, were grown at standard culture conditions (37C, 5% CO2) for 7 days (Fig. 3a).

ELISA assays were performed to measure paracrine factor (PF) production by the MSCs contained within the BTs grown in culture. Tubes loaded with 2 105 MSCs were submerged in 5mL of alpha-MEM basal medium (Stemcell Technologies, Tukwila, WA) supplemented with 20% FBS (Gibco Invitrogen, Carlsbad, CA) in a 6-well plate. At day 7, conditioned media was collected from each well, spun down for 1min to pellet any debris, and then flash frozen at 80C. Conditioned media samples were assessed for the concentrations of vascular endothelial growth factor (VEGF), stromal derived factor-1 (SDF1) and insulin-like growth factor-1 (IGF1) by ELISA (Quantikine, R&D Systems, Minneapolis, MN) according to the manufacturers instructions.

BTs were removed at day 7 and placed in separate wells of a 6-well plate containing human umbilical vein endothelial cells (HUVECs)44. Briefly, 105 HUVECs (Gibco Invitrogen, Carlsbad, CA) suspended in Medium 200PRF were plated per well in Geltrex (Gibco Invitrogen) coated 6-well plates. Negative control wells received a bioreactor loaded with un-supplemented Medium 200PRF only (i.e. no cells). Positive control wells were plated with 105 HUVECs suspended in 1mL of Medium 200PRF supplemented with LSGS, which is known to induce HUVEC tubule formation. After 18h at standard culture conditions (37C, 5% CO2), the wells were imaged to allow quantitative analysis of the resultant HUVEC tubule network. Images were taken in the center of each well and in all four quadrants at pre-determined locations (5 pictures total), at 100x magnification. The total length of the tubule networks captured in the images of each well was measured using ImageJ software. To allow for comparisons between experiments, the total length of the tubule network in each well was normalized to the average length of the tubule network in the negative control wells, and reported as a normalized ratio.

To assess the effect of young MSC-generated PFs on PF-mediated angiogenesis by old MSCs, BTs were prepared as described above containing either 105 young or 105 old MSCs. Two BTs were placed together in a 6-well plate in 5mL MSC media and incubated for 7 days at standard culture conditions (Fig. 3b) using a BT containing old MSCs paired with either a separate BT with other old MSCs (control) or a separate BT with young MSCs. After 7 days the tubes were removed, washed with un-supplemented Medium 200 PRF, and then used separately in the HUVEC assay as described above. After the HUVEC assay was complete (18h) the BTs were placed in separate wells of 6-well plates and grown in culture for 7 additional days with collection of conditioned media for PF release.

Replicates of 105 old MSCs were cultured separately, or in co-culture with young MSCs, for 7 days using a 0.4m Transwell system in 6-well plates (Corning), which allow transfer of soluble paracrine factors released by the cells, but not of the cells themselves. Following RNA purification, library preparation, amplification, and Illumina sequencing, the open source Galaxy pipeline was used for data processing and analyses. After alignment of raw sequencing reads to the UCSC mm10 genome using HISAT2, transcript assembly, alignment quantification, count normalization, and differential expression analyses were conducted with StringTie, featureCounts, DESeq2, and Genesis. Quantitative PCR (KAPA SYBR FAST One-Step qRT-PCR, Wilmington, MA) was used to validate 24 transcripts identified by RNA sequencing. Target genes were selected based on their presence in significantly regulated pathways and quantified relative to 18S ribosomal RNA using the 2Ct method45.

To validate the results of the RNA sequencing and RT-PCR results, a functional autophagy assay was performed to assess relative autophagy between old, young, and rejuvenated old MSCs. Old, young and rejuvenated cells were cultured (or co-cultured, in the case of rejuvenated cells) for 7 days in 6-well plates (105 cells per well). On Day 8, cells were trypsinzed, counted and 104 cells were transferred to each well of a 96-well black plate with clear bottom and incubated for 6h. The Autophagy Assay Kit (Sigma Aldrich, St. Louis, MO) measures autophagy using a proprietary fluorescent autophagosome marker in a microplate reader (ex=360; em=520nm). Three separate experiments were performed in triplicate each for each condition. To account for possible differences introduced by counting cells, results for each cell type were normalized based on absorbance (450nm) of a Cell Counting Kit-8 (Dojindo Molecular Technologies, Inc. Rockville, MD).

Data are reported as mean standard error of the mean (SEM) unless otherwise indicated. Comparisons between groups for the HUVEC experiments were performed using the permutation test. For the PF ELISA data, groups were compared using the MannWhitney test. The autophagy assay and rt-PCR results were assessed using two-tailed t tests. For these experiments a p-value < 0.05 was deemed significant. In the RNA sequencing differential expression analysis, a false discovery rate (FDR) of <0.05 was considered significant.

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In short, stem cells initiate the production of new tissue cells, which can then replace their diseased counterparts.

Mesenchymal stem cells (MSCs) are adult stem cells found in many areas of the body such as bone marrow. The unique thing about these cells is their compatibility with a range of tissues such as bone, cartilage, muscle, or fat. MSCs respond to injury or disease by migrating to these damaged areas, where they restore tissue function by replacing the damaged cells.

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It has recently been shown that the success of MSCs relies on their ability to release cell signals their mechanism to initiate tissue regeneration. These signals are packaged into extracellular vehicles (EVs) which are essentially bubbles of information. These are released by MSCs and taken up by the injured or diseased tissue cells to kickstart their inbuilt process of regeneration.

Through funding from the Royal Society of Edinburgh, research has started into the development of artificial EVs as a viable alternative to cell therapy. These EVs will contain the key molecules released by stem cells when they are responding to injury cues in the body.

The power to induce tissue regeneration would provide a significant new tool in biomedical treatment, such as incorporating EVs into synthetic hydrogels within a wound dressing to encourage and accelerate healing.

Within the lab setting, we have been able to manipulate stem cell cultures to produce EVs with different signal make-ups, and accurately identify their properties.

Controlling and identifying the different make-ups contained in EV signals which in turn induce different cell responses is crucial if we want to operationalise their use in medicine.

We now aim to synthesise artificial vesicles, or bubbles, for different clinical problems, such as, for example, bubbles with potent wound-healing properties that would help our ability to use new artificial stem cell therapy.

The research is underway and it is showing promise that we may be able to harness the regenerative power of stem cells in the near future.

An artificial EV-based approach also has several advantages over stem cell-based therapies, such as having increased potency and greater consistency in treatment, and at a lower cost to carry out.

Both inside and on the surface of the body, we would have the ability to induce a process vital to medical treatment we work with every day and, in turn, open a whole new avenue of possibilities in biomedical science.

Dr Catherine Berry is a reader in the Centre for the Cellular Microenvironment at the University of Glasgow, and a recipient of the Royal Society of Edinburghs personal research fellowship in 2021. This article expresses her own views. The RSE is Scotland's national academy, bringing great minds together to contribute to the social, cultural and economic well-being of Scotland. Find out more at rse.org.uk and @RoyalSocEd.

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The new report by Expert Market Research titled, Global Stem Cell Banking Market Report and Forecast 2021-2026, gives an in-depth analysis of the globalstem cell banking market, assessing the market based on its segments like Service type, product type, utilisation, bank type, application, and major regions like Asia Pacific, Europe, North America, Middle East and Africa and Latin America. The report tracks the latest trends in the industry and studies their impact on the overall market. It also assesses the market dynamics, covering the key demand and price indicators, along with analysing the market based on the SWOT and Porters Five Forces models.

Request a free sample copy in PDF or view the report summary@https://bityl.co/CPix

The key highlights of the report include:

Market Overview (2021-2026)

The global stem cell bank market is primarily driven by the advancements in the field of medicine and the rising prevalence of genetic and degenerativediseases. Further, the increasing research and development of more effective technologies for better preservation, processing, and storage of stem cells are aiding the growth. Additionally, rising prevalence of chronic diseases globally is increasing the for advances inmedicaltechnologies, thus pushing the growth further. Moreover, factors such as rising health awareness, developinghealthcare infrastructure, growing geriatric population, and the inflatingdisposableincomes are expected to propel the market in the forecast period.

Industry Definition and Major Segments

Stem cells are undifferentiated cells present in bone marrow,umbilical cordadipose tissue and blood. They have the ability to of differentiate and regenerate. The process of storing and preserving these cells for various application such as gene therapy, regenerative medicine and tissue engineering is known as stem cell banking.

Explore the full report with the table of contents@https://bityl.co/CPiy

By service type, the market is divided into:

Based on product type, the industry can be segmented into:

The market is bifurcated based on utilization into:

By bank type, the industry can be broadly categorized into:

Based on application, the industry can be segmented into:

On the basis of regional markets, the industry is divided into:

1 North America1.1 United States of America1.2 Canada2 Europe2.1 Germany2.2 United Kingdom2.3 France2.4 Italy2.5 Others3 Asia Pacific3.1 China3.2 Japan3.3 India3.4 ASEAN3.5 Others4 Latin America4.1 Brazil4.2 Argentina4.3 Mexico4.4 Others5 Middle East & Africa5.1 Saudi Arabia5.2 United Arab Emirates5.3 Nigeria5.4 South Africa5.5 Others

Market Trends

Regionally, North America is projected to dominate the global stem cell bank market and expand at a significant rate. This can be attributed to increasing research and development for stem cell application in various medical fields. Further, growing investments of pharmaceutical players and development infrastructure are other factors that are expected to stem cell bank market in the region. Meanwhile, Asia Pacific market is also expected to witness fast growth owing to the rapid development in healthcare facilities and increasing awareness of stem cell banking in countries such as China, India, and Indonesia.

Key Market Players

The major players in the market are Cryo-Cell International, Inc., Smart Cells International Ltd., CSG-BIO Company, Inc., CBR Systems Inc., ViaCord, LLC, LifeCell International Pvt. Ltd., and a few others. The report covers the market shares, capacities, plant turnarounds, expansions, investments and mergers and acquisitions, among other latest developments of these market players.

About Us:

Expert Market Research (EMR) is leading market research company with clients across the globe. Through comprehensive data collection and skilful analysis and interpretation of data, the company offers its clients extensive, latest and actionable market intelligence which enables them to make informed and intelligent decisions and strengthen their position in the market. The clientele ranges from Fortune 1000 companies to small and medium scale enterprises.

EMR customises syndicated reports according to clients requirements and expectations. The company is active across over 15 prominent industry domains, including food and beverages, chemicals and materials, technology and media, consumer goods, packaging, agriculture, and pharmaceuticals, among others.

Over 3000 EMR consultants and more than 100 analysts work very hard to ensure that clients get only the most updated, relevant, accurate and actionable industry intelligence so that they may formulate informed, effective and intelligent business strategies and ensure their leadership in the market.

Media Contact

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*We at Expert Market Research always thrive to give you the latest information. The numbers in the article are only indicative and may be different from the actual report.

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Global Stem Cell Banking Market To Be Driven At A CAGR Of 13.5% In The Forecast Period Of 2021-2026 This Is Ardee - This Is Ardee

Bone Marrow Stem Cells Comments Off on Global Stem Cell Banking Market To Be Driven At A CAGR Of 13.5% In The Forecast Period Of 2021-2026 This Is Ardee – This Is Ardee | July 25th, 2022

Country

United States of AmericaUS Virgin IslandsUnited States Minor Outlying IslandsCanadaMexico, United Mexican StatesBahamas, Commonwealth of theCuba, Republic ofDominican RepublicHaiti, Republic ofJamaicaAfghanistanAlbania, People's Socialist Republic ofAlgeria, People's Democratic Republic ofAmerican SamoaAndorra, Principality ofAngola, Republic ofAnguillaAntarctica (the territory South of 60 deg S)Antigua and BarbudaArgentina, Argentine RepublicArmeniaArubaAustralia, Commonwealth ofAustria, Republic ofAzerbaijan, Republic ofBahrain, Kingdom ofBangladesh, People's Republic ofBarbadosBelarusBelgium, Kingdom ofBelizeBenin, People's Republic ofBermudaBhutan, Kingdom ofBolivia, Republic ofBosnia and HerzegovinaBotswana, Republic ofBouvet Island (Bouvetoya)Brazil, Federative Republic ofBritish Indian Ocean Territory (Chagos Archipelago)British Virgin IslandsBrunei DarussalamBulgaria, People's Republic ofBurkina FasoBurundi, Republic ofCambodia, Kingdom ofCameroon, United Republic ofCape Verde, Republic ofCayman IslandsCentral African RepublicChad, Republic ofChile, Republic ofChina, People's Republic ofChristmas IslandCocos (Keeling) IslandsColombia, Republic ofComoros, Union of theCongo, Democratic Republic ofCongo, People's Republic ofCook IslandsCosta Rica, Republic ofCote D'Ivoire, Ivory Coast, Republic of theCyprus, Republic ofCzech RepublicDenmark, Kingdom ofDjibouti, Republic ofDominica, Commonwealth ofEcuador, Republic ofEgypt, Arab Republic ofEl Salvador, Republic ofEquatorial Guinea, Republic ofEritreaEstoniaEthiopiaFaeroe IslandsFalkland Islands (Malvinas)Fiji, Republic of the Fiji IslandsFinland, Republic ofFrance, French RepublicFrench GuianaFrench PolynesiaFrench Southern TerritoriesGabon, Gabonese RepublicGambia, Republic of theGeorgiaGermanyGhana, Republic ofGibraltarGreece, Hellenic RepublicGreenlandGrenadaGuadaloupeGuamGuatemala, Republic ofGuinea, RevolutionaryPeople's Rep'c ofGuinea-Bissau, Republic ofGuyana, Republic ofHeard and McDonald IslandsHoly See (Vatican City State)Honduras, Republic ofHong Kong, Special Administrative Region of ChinaHrvatska (Croatia)Hungary, Hungarian People's RepublicIceland, Republic ofIndia, Republic ofIndonesia, Republic ofIran, Islamic Republic ofIraq, Republic ofIrelandIsrael, State ofItaly, Italian RepublicJapanJordan, Hashemite Kingdom ofKazakhstan, Republic ofKenya, Republic ofKiribati, Republic ofKorea, Democratic People's Republic ofKorea, Republic ofKuwait, State ofKyrgyz RepublicLao People's Democratic RepublicLatviaLebanon, Lebanese RepublicLesotho, Kingdom ofLiberia, Republic ofLibyan Arab JamahiriyaLiechtenstein, Principality ofLithuaniaLuxembourg, Grand Duchy ofMacao, Special Administrative Region of ChinaMacedonia, the former Yugoslav Republic ofMadagascar, Republic ofMalawi, Republic ofMalaysiaMaldives, Republic ofMali, Republic ofMalta, Republic ofMarshall IslandsMartiniqueMauritania, Islamic Republic ofMauritiusMayotteMicronesia, Federated States ofMoldova, Republic ofMonaco, Principality ofMongolia, Mongolian People's RepublicMontserratMorocco, Kingdom ofMozambique, People's Republic ofMyanmarNamibiaNauru, Republic ofNepal, Kingdom ofNetherlands AntillesNetherlands, Kingdom of theNew CaledoniaNew ZealandNicaragua, Republic ofNiger, Republic of theNigeria, Federal Republic ofNiue, Republic ofNorfolk IslandNorthern Mariana IslandsNorway, Kingdom ofOman, Sultanate ofPakistan, Islamic Republic ofPalauPalestinian Territory, OccupiedPanama, Republic ofPapua New GuineaParaguay, Republic ofPeru, Republic ofPhilippines, Republic of thePitcairn IslandPoland, Polish People's RepublicPortugal, Portuguese RepublicPuerto RicoQatar, State ofReunionRomania, Socialist Republic ofRussian FederationRwanda, Rwandese RepublicSamoa, Independent State ofSan Marino, Republic ofSao Tome and Principe, Democratic Republic ofSaudi Arabia, Kingdom ofSenegal, Republic ofSerbia and MontenegroSeychelles, Republic ofSierra Leone, Republic ofSingapore, Republic ofSlovakia (Slovak Republic)SloveniaSolomon IslandsSomalia, Somali RepublicSouth Africa, Republic ofSouth Georgia and the South Sandwich IslandsSpain, Spanish StateSri Lanka, Democratic Socialist Republic ofSt. HelenaSt. Kitts and NevisSt. LuciaSt. Pierre and MiquelonSt. Vincent and the GrenadinesSudan, Democratic Republic of theSuriname, Republic ofSvalbard & Jan Mayen IslandsSwaziland, Kingdom ofSweden, Kingdom ofSwitzerland, Swiss ConfederationSyrian Arab RepublicTaiwan, Province of ChinaTajikistanTanzania, United Republic ofThailand, Kingdom ofTimor-Leste, Democratic Republic ofTogo, Togolese RepublicTokelau (Tokelau Islands)Tonga, Kingdom ofTrinidad and Tobago, Republic ofTunisia, Republic ofTurkey, Republic ofTurkmenistanTurks and Caicos IslandsTuvaluUganda, Republic ofUkraineUnited Arab EmiratesUnited Kingdom of Great Britain & N. IrelandUruguay, Eastern Republic ofUzbekistanVanuatuVenezuela, Bolivarian Republic ofViet Nam, Socialist Republic ofWallis and Futuna IslandsWestern SaharaYemenZambia, Republic ofZimbabwe

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He's the match: Arconic employee gets call 20 years after signing up to be bone marrow donor - Maryville Daily Times

Bone Marrow Stem Cells Comments Off on He’s the match: Arconic employee gets call 20 years after signing up to be bone marrow donor – Maryville Daily Times | July 25th, 2022

SINGAPORE - A Singaporean doctorwho is one of the top cell therapy experts in the worldhas been appointed to a World Health Organisation (WHO) expert panel.

Dr Mickey Koh is so sought-after in his field that for the past 15 years, he has been holding two jobs in two different countries.

The 56-year-old shuttles between England and Singapore, spending six weeks at a time in London, where he oversees the haematology department and looks after bone marrow transplant patients at St George's University Hospital, before returning to Singapore for a week and a half to head the cell therapy programme at the Health Sciences Authority.

Cell therapy is a growing field of medicine that uses living cells as treatment for a variety of diseases and conditions. This is an increasingly important therapeutic area and both his employers have agreed to his unusual schedule.

Over in London, Dr Koh is head of the Haematology Department at St George's Hospital and Medical School. In Singapore, he is the programme and medical director of the cell and gene therapy facility at the Health Sciences Authority.

In May, Dr Koh was selected to be on the WHO Expert Advisory Panel on Biological Standardisation.

Individuals on the panel have to be invited by WHO to apply, and are well recognised in their respective scientific fields. Eminent names on the panel include the current president of the Paul-Ehrlich-Institut in Germany, which is the country's federal agency, medical regulatory body and research institution for vaccines and biomedicine.

The WHO panel, which is made up of about 25 members, provides detailed recommendations and guidelines for the manufacturing, licensing and standardisation of biological products, which include blood, monoclonal antibodies, vaccines and, increasingly, cell-based therapeutics.

The recommendations and advice are passed on to the executive board of the World Health Assembly, which is the decision-making body of WHO.

Dr Koh's role had to be endorsed by the British government and was a direct appointment by the director-general of WHO.

His appointment as a panel expert will last for a term of four years.

Speaking to The Straits Times, Dr Koh shared his thoughts about the importance of regulation: "We are well aware that there is a very lucrative worldwide market peddling unproven stem cell treatments, where side effects are often unknown, and such unregulated practice can result in serious harm.

"This is already happening. People are claiming that you can use stem cells to treat things like ageing, and even very serious conditions like strokes, without any evidence."

With many medications now taking the form of biologics - a drug product derived from biological sources such as cells - the next wave of treatment would be the utilisation of these cells for the treatment of a wide range of diseases, Dr Koh said.

Excerpt from:
S'porean doctor, a sought-after top expert in cell therapy, appointed to WHO expert panel - The Straits Times

Bone Marrow Stem Cells Comments Off on S’porean doctor, a sought-after top expert in cell therapy, appointed to WHO expert panel – The Straits Times | July 25th, 2022

Tecartus (Brexucabtagene Autoleucel) First and Only CAR T in Europe to Receive Positive CHMP Opinion to Treat Adults 26+ with r/r ALL

If Approved, it will Address a Significant Unmet Need for a Patient Population with Limited Treatment Options

SANTA MONICA, Calif.--(BUSINESS WIRE)--Kite, a Gilead Company (Nasdaq: GILD), today announces that the European Medicines Agency (EMA) Committee for Medicinal Products for Human Use (CHMP) has issued a positive opinion for Tecartus (brexucabtagene autoleucel) for the treatment of adult patients 26 years of age and above with relapsed or refractory (r/r) B-cell precursor acute lymphoblastic leukemia (ALL). If approved, Tecartus will be the first and only Chimeric Antigen Receptor (CAR) T-cell therapy for this population of patients who have limited treatment options. Half of adults with ALL will relapse, and median overall survival (OS) for this group is only approximately eight months with current standard-of-care treatments.

Kites goal is clear: to bring the hope of survival to more patients with cancer around the world through cell therapy, said Christi Shaw, CEO, Kite. Todays CHMP positive opinion in adult ALL brings us a step closer to delivering on the promise that cell therapies have to transform the way cancer is treated.

Following this positive opinion, the European Commission will now review the CHMP opinion; the final decision on the Marketing Authorization is expected in the coming months.

Adults with relapsed or refractory ALL often undergo multiple treatments including chemotherapy, targeted therapy and stem cell transplant, creating a significant burden on a patients quality of life, said Max S. Topp, MD, professor and head of Hematology, University Hospital of Wuerzburg, Germany. If approved, patients in Europe will have a meaningful advancement in treatment. Tecartus has demonstrated durable responses, suggesting the potential for long-term remission and a new approach to care.

Results from the ZUMA-3 international multicenter, single-arm, open-label, registrational Phase 1/2 study of adult patients (18 years old) with relapsed or refractory ALL, demonstrated that 71% of the evaluable patients (n=55) achieved complete remission (CR) or CR with incomplete hematological recovery (CRi) with a median follow-up of 26.8 months. In an extended data set of all patients dosed with the pivotal dose (n=78) the median overall survival for all patients was more than two years (25.4 months) and almost four years (47 months) for responders (patients who achieved CR or CRi). Among efficacy-evaluable patients, median duration of remission (DOR) was 18.6 months. Among the patients treated with Tecartus at the target dose (n=100), Grade 3 or higher cytokine release syndrome (CRS) and neurologic events occurred in 25% and 32% of patients, respectively, and were generally well-managed.

About ZUMA-3

ZUMA-3 is an ongoing international multicenter (US, Canada, EU), single arm, open label, registrational Phase 1/2 study of Tecartus in adult patients (18 years old) with ALL whose disease is refractory to or has relapsed following standard systemic therapy or hematopoietic stem cell transplantation. The primary endpoint is the rate of overall complete remission or complete remission with incomplete hematological recovery by central assessment. Duration of remission and relapse-free survival, overall survival, minimal residual disease (MRD) negativity rate, and allo-SCT rate were assessed as secondary endpoints.

About Acute Lymphoblastic Leukemia

ALL is an aggressive type of blood cancer that develops when abnormal white blood cells accumulate in the bone marrow until there isnt any room left for blood cells to form. In some cases, these abnormal cells invade healthy organs and can also involve the lymph nodes, spleen, liver, central nervous system and other organs. The most common form is B cell precursor ALL. Globally, approximately 64,000 people are diagnosed with ALL each year, including around 3,300 people in Europe.

About Tecartus

Please see full FDA Prescribing Information, including BOXED WARNING and Medication Guide.

Tecartus is a CD19-directed genetically modified autologous T cell immunotherapy indicated for the treatment of:

This indication is approved under accelerated approval based on overall response rate and durability of response. Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.

U.S. IMPORTANT SAFETY INFORMATION

BOXED WARNING: CYTOKINE RELEASE SYNDROME and NEUROLOGIC TOXICITIES

Cytokine Release Syndrome (CRS), including life-threatening reactions, occurred following treatment with Tecartus. In ZUMA-2, CRS occurred in 91% (75/82) of patients receiving Tecartus, including Grade 3 CRS in 18% of patients. Among the patients who died after receiving Tecartus, one had a fatal CRS event. The median time to onset of CRS was three days (range: 1 to 13 days) and the median duration of CRS was ten days (range: 1 to 50 days). Among patients with CRS, the key manifestations (>10%) were similar in MCL and ALL and included fever (93%), hypotension (62%), tachycardia (59%), chills (32%), hypoxia (31%), headache (21%), fatigue (20%), and nausea (13%). Serious events associated with CRS included hypotension, fever, hypoxia, tachycardia, and dyspnea.

Ensure that a minimum of two doses of tocilizumab are available for each patient prior to infusion of Tecartus. Following infusion, monitor patients for signs and symptoms of CRS daily for at least seven days for patients with MCL and at least 14 days for patients with ALL at the certified healthcare facility, and for four weeks thereafter. Counsel patients to seek immediate medical attention should signs or symptoms of CRS occur at any time. At the first sign of CRS, institute treatment with supportive care, tocilizumab, or tocilizumab and corticosteroids as indicated.

Neurologic Events, including those that were fatal or life-threatening, occurred following treatment with Tecartus. Neurologic events occurred in 81% (66/82) of patients with MCL, including Grade 3 in 37% of patients. The median time to onset for neurologic events was six days (range: 1 to 32 days) with a median duration of 21 days (range: 2 to 454 days) in patients with MCL. Neurologic events occurred in 87% (68/78) of patients with ALL, including Grade 3 in 35% of patients. The median time to onset for neurologic events was seven days (range: 1 to 51 days) with a median duration of 15 days (range: 1 to 397 days) in patients with ALL. For patients with MCL, 54 (66%) patients experienced CRS before the onset of neurological events. Five (6%) patients did not experience CRS with neurologic events and eight patients (10%) developed neurological events after the resolution of CRS. Neurologic events resolved for 119 out of 134 (89%) patients treated with Tecartus. Nine patients (three patients with MCL and six patients with ALL) had ongoing neurologic events at the time of death. For patients with ALL, neurologic events occurred before, during, and after CRS in 4 (5%), 57 (73%), and 8 (10%) of patients; respectively. Three patients (4%) had neurologic events without CRS. The onset of neurologic events can be concurrent with CRS, following resolution of CRS or in the absence of CRS.

The most common neurologic events (>10%) were similar in MCL and ALL and included encephalopathy (57%), headache (37%), tremor (34%), confusional state (26%), aphasia (23%), delirium (17%), dizziness (15%), anxiety (14%), and agitation (12%). Serious events including encephalopathy, aphasia, confusional state, and seizures occurred after treatment with Tecartus.

Monitor patients daily for at least seven days for patients with MCL and at least 14 days for patients with ALL at the certified healthcare facility and for four weeks following infusion for signs and symptoms of neurologic toxicities and treat promptly.

REMS Program: Because of the risk of CRS and neurologic toxicities, Tecartus is available only through a restricted program under a Risk Evaluation and Mitigation Strategy (REMS) called the Yescarta and Tecartus REMS Program which requires that:

Hypersensitivity Reactions: Serious hypersensitivity reactions, including anaphylaxis, may occur due to dimethyl sulfoxide (DMSO) or residual gentamicin in Tecartus.

Severe Infections: Severe or life-threatening infections occurred in patients after Tecartus infusion. Infections (all grades) occurred in 56% (46/82) of patients with MCL and 44% (34/78) of patients with ALL. Grade 3 or higher infections, including bacterial, viral, and fungal infections, occurred in 30% of patients with ALL and MCL. Tecartus should not be administered to patients with clinically significant active systemic infections. Monitor patients for signs and symptoms of infection before and after Tecartus infusion and treat appropriately. Administer prophylactic antimicrobials according to local guidelines.

Febrile neutropenia was observed in 6% of patients with MCL and 35% of patients with ALL after Tecartus infusion and may be concurrent with CRS. The febrile neutropenia in 27 (35%) of patients with ALL includes events of febrile neutropenia (11 (14%)) plus the concurrent events of fever and neutropenia (16 (21%)). In the event of febrile neutropenia, evaluate for infection and manage with broad spectrum antibiotics, fluids, and other supportive care as medically indicated.

In immunosuppressed patients, life-threatening and fatal opportunistic infections have been reported. The possibility of rare infectious etiologies (e.g., fungal and viral infections such as HHV-6 and progressive multifocal leukoencephalopathy) should be considered in patients with neurologic events and appropriate diagnostic evaluations should be performed.

Hepatitis B virus (HBV) reactivation, in some cases resulting in fulminant hepatitis, hepatic failure, and death, can occur in patients treated with drugs directed against B cells. Perform screening for HBV, HCV, and HIV in accordance with clinical guidelines before collection of cells for manufacturing.

Prolonged Cytopenias: Patients may exhibit cytopenias for several weeks following lymphodepleting chemotherapy and Tecartus infusion. In patients with MCL, Grade 3 or higher cytopenias not resolved by Day 30 following Tecartus infusion occurred in 55% (45/82) of patients and included thrombocytopenia (38%), neutropenia (37%), and anemia (17%). In patients with ALL who were responders to Tecartus treatment, Grade 3 or higher cytopenias not resolved by Day 30 following Tecartus infusion occurred in 20% (7/35) of the patients and included neutropenia (12%) and thrombocytopenia (12%); Grade 3 or higher cytopenias not resolved by Day 60 following Tecartus infusion occurred in 11% (4/35) of the patients and included neutropenia (9%) and thrombocytopenia (6%). Monitor blood counts after Tecartus infusion.

Hypogammaglobulinemia: B cell aplasia and hypogammaglobulinemia can occur in patients receiving treatment with Tecartus. Hypogammaglobulinemia was reported in 16% (13/82) of patients with MCL and 9% (7/78) of patients with ALL. Monitor immunoglobulin levels after treatment with Tecartus and manage using infection precautions, antibiotic prophylaxis, and immunoglobulin replacement.

The safety of immunization with live viral vaccines during or following Tecartus treatment has not been studied. Vaccination with live virus vaccines is not recommended for at least six weeks prior to the start of lymphodepleting chemotherapy, during Tecartus treatment, and until immune recovery following treatment with Tecartus.

Secondary Malignancies may develop. Monitor life-long for secondary malignancies. In the event that one occurs, contact Kite at 1-844-454-KITE (5483) to obtain instructions on patient samples to collect for testing.

Effects on Ability to Drive and Use Machines: Due to the potential for neurologic events, including altered mental status or seizures, patients are at risk for altered or decreased consciousness or coordination in the 8 weeks following Tecartus infusion. Advise patients to refrain from driving and engaging in hazardous activities, such as operating heavy or potentially dangerous machinery, during this period.

Adverse Reactions: The most common non-laboratory adverse reactions ( 20%) were fever, cytokine release syndrome, hypotension, encephalopathy, tachycardia, nausea, chills, headache, fatigue, febrile neutropenia, diarrhea, musculoskeletal pain, hypoxia, rash, edema, tremor, infection with pathogen unspecified, constipation, decreased appetite, and vomiting. The most common serious adverse reactions ( 2%) were cytokine release syndrome, febrile neutropenia, hypotension, encephalopathy, fever, infection with pathogen unspecified, hypoxia, tachycardia, bacterial infections, respiratory failure, seizure, diarrhea, dyspnea, fungal infections, viral infections, coagulopathy, delirium, fatigue, hemophagocytic lymphohistiocytosis, musculoskeletal pain, edema, and paraparesis.

About Kite

Kite, a Gilead Company, is a global biopharmaceutical company based in Santa Monica, California, with manufacturing operations in North America and Europe. Kites singular focus is cell therapy to treat and potentially cure cancer. As the cell therapy leader, Kite has more approved CAR T indications to help more patients than any other company. For more information on Kite, please visit http://www.kitepharma.com. Follow Kite on social media on Twitter (@KitePharma) and LinkedIn.

About Gilead Sciences

Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company is committed to advancing innovative medicines to prevent and treat life-threatening diseases, including HIV, viral hepatitis and cancer. Gilead operates in more than 35 countries worldwide, with headquarters in Foster City, California.

Forward-Looking Statements

This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including the ability of Gilead and Kite to initiate, progress or complete clinical trials within currently anticipated timelines or at all, and the possibility of unfavorable results from ongoing and additional clinical trials, including those involving Tecartus; the risk that physicians may not see the benefits of prescribing Tecartus for the treatment of blood cancers; and any assumptions underlying any of the foregoing. These and other risks, uncertainties and other factors are described in detail in Gileads Quarterly Report on Form 10-Q for the quarter ended March 31, 2022 as filed with the U.S. Securities and Exchange Commission. These risks, uncertainties and other factors could cause actual results to differ materially from those referred to in the forward-looking statements. All statements other than statements of historical fact are statements that could be deemed forward-looking statements. The reader is cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties and is cautioned not to place undue reliance on these forward-looking statements. All forward-looking statements are based on information currently available to Gilead and Kite, and Gilead and Kite assume no obligation and disclaim any intent to update any such forward-looking statements.

U.S. Prescribing Information for Tecartus including BOXED WARNING, is available at http://www.kitepharma.com and http://www.gilead.com .

Kite, the Kite logo, Tecartus and GILEAD are trademarks of Gilead Sciences, Inc. or its related companies .

View source version on businesswire.com: https://www.businesswire.com/news/home/20220722005258/en/

Jacquie Ross, Investorsinvestor_relations@gilead.com

Anna Padula, Mediaapadula@kitepharma.com

Source: Gilead Sciences, Inc.

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Kite's CAR T-cell Therapy Tecartus Receives Positive CHMP Opinion in Relapsed or Refractory Acute Lymphoblastic Leukemia (r/r ALL) - Gilead Sciences

Bone Marrow Stem Cells Comments Off on Kite’s CAR T-cell Therapy Tecartus Receives Positive CHMP Opinion in Relapsed or Refractory Acute Lymphoblastic Leukemia (r/r ALL) – Gilead Sciences | July 25th, 2022

Market Overview

Thecell culture media marketis expected to cross USD 4.33 billion by 2027 at a CAGR of8.33%.

Market Dynamics

The markets growth is being fueled by a diverse range of cell culture media applications, increased research and development in the pharmaceutical industry, an increase in the prevalence of chronic diseases, and increased expansion and product launches by major players. Over the last few decades, advancements in cell culture technology have accelerated. It is widely regarded as one of the most dependable, robust, and mature technologies for biotherapeutic product development.

The high cost of cell culture media and the risk of contamination, on the other hand, are impeding the markets growth. However, the growing emphasis on regenerative and personalized medicine is likely to spur growth in the global cell culture media market.

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Competitive Dynamics

The notable players are the Merck KGaA (Germany), Bio-Rad Laboratories, Inc. (US), Thermo Fisher Scientific Inc. (US), Lonza (Switzerland), GE Healthcare (US), Becton, Dickinson and Company (US), HiMedia Laboratories (India), Corning Incorporated (US), PromoCell (Germany), Sera Scandia A/S (Denmark), The Sartorius Group (Germany), and Fujifilm Holdings Corporation (Japan).

Segmental Analysis

The global market for cell culture media has been segmented according to product type, application, and end user.

The market has been segmented by product type into classical media, stem cell media, serum-free media, and others.

Further subcategories of stem cell culture media include bone marrow, embryonic stem cells, mesenchymal stem cells, and neural stem cells.

The market is segmented into four application segments: drug discovery and development, cancer research, genetic engineering, and tissue engineering and biochemistry.

The market is segmented by end user into biochemistry and pharmaceutical companies, research laboratories, academic institutions, and pathology laboratories.

Regional Overview

According to region, the global cell culture media market is segmented into the Americas, Europe, Asia-Pacific, and the Middle East & Africa.

The Americas dominated the global cell culture media market. The large share is attributed to the presence of major manufacturers, rising disease prevalence resulting in increased demand for drugs and other medications, technological advancements in the preclinical and clinical segments, growing public awareness, and high disposable income.

Europe ranks second in terms of market size for cell culture media. Factors such as an increase in the biopharmaceutical sector in the European region, increased government initiatives to promote research to find a cure for the growing number of chronic diseases, an increase in the number of pharmaceutical manufacturers, improving economies, a high disposable income per individual, and increased healthcare spending are all contributing to the markets growth in this region. The European market is expected to be driven by expanding R&D activities and a developing biopharmaceutical sector.

Asia-Pacific held the third-largest market share, owing to the presence of numerous research organizations, low manufacturing costs, low labor costs, developing healthcare infrastructure, and increased investment by American and European market giants in Asian countries such as China and India.

The Middle East and Africa, with limited economic development and extremely low income, held the smallest market share in 2019 but is expected to grow due to growing public awareness and demand for improved healthcare facilities in countries, as well as rising disposable income.

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Cell Culture Media Market: Competitive Approach, Breakdown And Forecast by 2027 - Digital Journal

Bone Marrow Stem Cells Comments Off on Cell Culture Media Market: Competitive Approach, Breakdown And Forecast by 2027 – Digital Journal | July 25th, 2022

New Jersey, United States TheStem Cell TherapyMarket research guides new entrants to obtain precise market data and communicates with customers to know their requirements and preferences. It spots outright business opportunities and helps to bring new products into the market. It identifies opportunities in the marketplace. It aims at doing modifications in the business to make business procedures smooth and make business forward. It helps business players to make sound decision making. Stem Cell Therapy market report helps to reduce business risks and provides ways to deal with upcoming challenges. Market information provided here helps new entrants to take informed decisions making. It emphasizes on major regions of the globe such as Europe, North America, Asia Pacific, Middle East, Africa, and Latin America along with their market size.

Such unique Stem Cell Therapy Market research report offers some extensive strategic plans that help the players to deal with the current market situation and make your position. It helps in strengthening your business position. It offers better understanding of the market and keep perspective to aid one remain ahead in this competitive market. Organizations can gauze and compare their presentation with others in the market on the basis of this prompt market report. This market report offers a clarified picture of the varying market tactics and thereby helps the business organizations gain bigger profits. You get a clear idea about the product launches, trade regulations and expansion of the market place through this market report.

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Key Players Mentioned in the Stem Cell Therapy Market Research Report:

Osiris Therapeutics Medipost Co. Ltd., Anterogen Co. Ltd., Pharmicell Co. Ltd., HolostemTerapieAvanzateSrl, JCR Pharmaceuticals Co. Ltd., Nuvasive RTI Surgical Allosource

Stem Cell TherapyMarket report consists of important data about the entire market environment of products or services offered by different industry players. It enables industries to know the market scenario of a particular product or service including demand, supply, market structure, pricing structure, and trend analysis. It is of great assistance in the product market development. It further depicts essential data regarding customers, products, competition, and market growth factors. Stem Cell Therapy market research benefits greatly to make the proper decision. Future trends are also revealed for particular products or services to help business players in making the right investment and launching products into the market.

Stem Cell TherapyMarket Segmentation:

Stem Cell Therapy Market, By Cell Source

Adipose Tissue-Derived Mesenchymal Stem Cells Bone Marrow-Derived Mesenchymal Stem Cells Cord Blood/Embryonic Stem Cells Other Cell Sources

Stem Cell Therapy Market, By Therapeutic Application

Musculoskeletal Disorders Wounds and Injuries Cardiovascular Diseases Surgeries Gastrointestinal Diseases Other Applications

Stem Cell Therapy Market, By Type

Allogeneic Stem Cell Therapy Autologous Stem Cell Therapy

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For Prepare TOC Our Analyst deep Researched the Following Things:

Report Overview:It includes major players of the Stem Cell Therapy market covered in the research study, research scope, market segments by type, market segments by application, years considered for the research study, and objectives of the report.

Global Growth Trends:This section focuses on industry trends where market drivers and top market trends are shed light upon. It also provides growth rates of key producers operating in the Stem Cell Therapy market. Furthermore, it offers production and capacity analysis where marketing pricing trends, capacity, production, and production value of the Stem Cell Therapy market are discussed.

Market Share by Manufacturers:Here, the report provides details about revenue by manufacturers, production and capacity by manufacturers, price by manufacturers, expansion plans, mergers and acquisitions, and products, market entry dates, distribution, and market areas of key manufacturers.

Market Size by Type:This section concentrates on product type segments where production value market share, price, and production market share by product type are discussed.

Market Size by Application:Besides an overview of the Stem Cell Therapy market by application, it gives a study on the consumption in the Stem Cell Therapy market by application.

Production by Region:Here, the production value growth rate, production growth rate, import and export, and key players of each regional market are provided.

Consumption by Region:This section provides information on the consumption in each regional market studied in the report. The consumption is discussed on the basis of country, application, and product type.

Company Profiles:Almost all leading players of the Stem Cell Therapy market are profiled in this section. The analysts have provided information about their recent developments in the Stem Cell Therapy market, products, revenue, production, business, and company.

Market Forecast by Production:The production and production value forecasts included in this section are for the Stem Cell Therapy market as well as for key regional markets.

Market Forecast by Consumption:The consumption and consumption value forecasts included in this section are for the Stem Cell Therapy market as well as for key regional markets.

Value Chain and Sales Analysis:It deeply analyzes customers, distributors, sales channels, and value chain of the Stem Cell Therapy market.

Key Findings:This section gives a quick look at the important findings of the research study.

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Stem Cell Therapy Market Size, Scope, Growth Opportunities, Trends by Manufacturers And Forecast to 2029 This Is Ardee - This Is Ardee

Bone Marrow Stem Cells Comments Off on Stem Cell Therapy Market Size, Scope, Growth Opportunities, Trends by Manufacturers And Forecast to 2029 This Is Ardee – This Is Ardee | July 25th, 2022

Josh, Harper and Meagan in June 2022

Two years ago, Meagan stood in a hospital room at Seattle Childrens cradling her 1-year-old daughter, Harper, against her chest. Her fianc, Josh, huddled close to them and kissed the thinning hair on top of their babys head.

A feeding tube was routed through Harpers nose and her eyes were brimming with tears. Exhausted, she snuggled into her moms arms as a photographer took their picture.

Meagan and Josh feared those would be the last photos taken of their baby girl.

Six months before, Harper became seriously ill. After multiple visits to their pediatrician in Yakima, Meagan took her to an emergency room where blood tests revealed Harper had leukemia.

It was shocking, Meagan says. Thirty minutes later we were on an emergency flight to Seattle Childrens.

The family didnt return home for nearly two years.

The type of leukemia Harper had acute lymphoblastic leukemia (ALL) is typically harder to treat and has lower survival rates when it occurs in infants who are less than a year old.

Harpers case was exceptionally challenging. She didnt respond to standard chemotherapy, even after providers added a medication designed to sensitize her leukemia to the treatment.

Her care team, which included Seattle Childrens High-Risk Leukemia Program, believed a stem cell transplant would give Harper the best chance of surviving, but they had to eliminate the majority of her leukemia cells first.

Drs. Kasey Leger and Brittany Lee, Harpers primary oncologists, started her on a novel immunotherapy medication, called blinatumomab, which effectively destroyed many of her ALL cells.

Unfortunately, two weeks later, the team discovered some of Harpers ALL cells had morphed into a different blood cancer acute myeloid leukemia (AML). This rare occurrence, called lineage switch, occurs in less than 5% of infant ALL cases.

It was a roller coaster, Josh says. She didnt do anything they expected her to do. It felt like every day we had to come up with a new plan.

Drs. Leger and Lee gave Harper a different kind of chemotherapy that destroyed the new AML cells. Still, some of her ALL cells remained, so the team gave Harper blinatumomab again which finally suppressed her cancer enough for her to have a stem cell transplant just before her first birthday.

Harper and her mom, Meagan, celebrating Harpers first birthday shortly after her stem cell transplant

The team had done everything they could to get Harper healthy enough for a stem cell transplant, hopeful it would be the treatment that finally cured her. Tragically, Harpers leukemia was back less than a month later.

When leukemia comes back so soon after transplant, patients have very few treatment options, if any, says Dr. Corinne Summers, Harpers stem cell transplant specialist. Many patients will not survive long term.

Harpers parents were terrified they were going to lose her.

Her bone marrow was packed with leukemia, Josh remembers. You could tell the life was slipping out of her and she just looked like it was going to be the end.

After Harpers stem cell transplant failed, the family met with end-of-life specialists and scheduled a special photo session to create memories that they would carry forward

They struggled to decide if they should continue treatment.

How do you know when enough is enough? Meagan says. When do you say, We cant do this to her anymore? Harper couldnt tell us how she was feeling, so it was all our decision.

Meagan and Josh worked closely with the care team to decide what to do next.

Those conversations were emotional for all of us, says Dr. Lee. Thankfully, we had a close, trusting relationship with their family and were able to give recommendations that reflected what they wanted for their daughter and what they felt was most important.

After much consideration, Meagan and Josh decided Harper was strong enough to continue treatment.

Drs. Leger and Lee filed a compassionate use request with the Food and Drug Administration to give Harper an investigational chemotherapy drug called venetoclax. Unfortunately, the treatment didnt work.

Collaborating with the family, the team decided to try giving Harper blinatumomab one more time. There was no evidence suggesting the medication would work so soon after a bone marrow transplant and with such a high burden of leukemia, but within a week it eliminated 98% of Harpers cancer cells.

Family is a critical piece of the team, Dr. Leger says. And Harper is fortunate to have amazing parents who were at her bedside 24/7 and had a beautiful way of advocating for her. They challenged us to leave no stone unturned and partnered with us throughout her treatment to keep figuring out a way forward.

With Harpers leukemia under control, the team searched for a way to wipe out any remaining cancer cells and keep her disease from coming back. Doctors in Childrens Cancer and Blood Disorders Center lead national research groups such as the Childrens Oncology Group, so they have access to trials around the world. However, Harpers care team found the best treatment for her was at Seattle Childrens Hospital, in partnership with Seattle Childrens Therapeutics.

Harpers T-cells were removed through a process called apheresis before they were reprogrammed to target her cancer cells and infused back into her blood

Harper was enrolled in one of Childrens T-cell immunotherapy clinical trials. The treatment involves re-programming a patients T cells (a type of white blood cell) to target and destroy their cancer cells.

After her T-cell therapy, Harper was finally in remission.

Meagan cried with relief when she found out. Harper would not be here right now if it wasnt for everybody at Seattle Childrens, she says. From day one, theyve been comforting and compassionate. They bend over backwards to keep families involved and helped us fight for our child.

To keep her in remission, Harper was given six antigen-presenting cell boosters, which kept her reprogrammed T cells circulating through her blood longer. She received the last booster earlier this year and is still in remission today.

Harper had a very unique disease in that her leukemia manifested as both ALL and AML, says Dr. Leger. Thankfully, we have team members with deep expertise in each of those diseases. Having internationally recognized chemotherapy, transplant and immunotherapy specialists on our team allowed us to be creative with her care when she needed to go beyond the standard pathways.

Today, Harper is a joyful, boisterous 3-year-old who loves experimenting with musical toys and splashing around in her bath or kiddie pool. One of her favorite things to do is grab Meagan by the hair and squish their faces together.

Because of the treatments Harper received at such a young age and the extended time she spent in the hospital, Harper is behind on some developmental milestones like speaking and walking. Still, Meagan and Josh say shes catching up.

Shes starting to bloom and take off and its so nice to see, Meagan says. At the same time, we cant get too comfortable. We know how relentless her disease is and that it could come back one day.

Harper plays in a pool, one of her favorite activities, in June 2022

Harpers family encourages community members to support cancer research at Childrens so that new treatments can be developed for Harper and other kids like her.

Without donors, Harper probably wouldnt be alive right now, Josh says. The treatments she had were developed in just the last few years. If people dont step up and donate, those programs arent there. Those drugs arent invented. Cancer treatment has come a really long way and thats because of donors stepping up to make that happen.

Learn more about Seattle Childrens High-Risk Leukemia Program and Cancer and Blood Disorders Center.

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No Stone Unturned: Seattle Children's High-Risk Leukemia Experts Specialize in the Toughest Cases - On the Pulse - On the Pulse

Bone Marrow Stem Cells Comments Off on No Stone Unturned: Seattle Children’s High-Risk Leukemia Experts Specialize in the Toughest Cases – On the Pulse – On the Pulse | July 25th, 2022

The Seoul National University Hospital (SNUH) said its research team has opened a way to raise bone marrow's success rate drastically.

The team has discovered a special macrophage that allows mass-producing top hematopoietic stem cells (HSCs) for the first time globally. By making the most of this special macrophage, we expect to mass-produce the youngest HSCs that are also most capable of differentiating, it said.

Bone marrow (HSC) transplantation is an important treatment that provides blood cancer patients with a chance to be cured. Medical professionals can also expand the techniques indications to treat blood diseases, such as dysplastic anemia, bone marrow dysplasia syndrome, lymphoma, multiple myeloma, complex immunodeficiency, and autoimmune diseases.

A technique is needed to amplify top HSCs to improve bone marrow transplantations efficiency, but it remains in its infancy. In addition, cells that maintain homeostasis by controlling the dormancy and proliferation of HSCs are also difficult to prove.

A joint research team of Ludwig-Maximilian University in Germany, Queen Mary University in the U.K., and Harvard University in the U.S. has claimed that red blood cells expressing large amounts of the DARC (ACKR1) protein were crucial in maintaining the homeostasis of HSCs, which, however, has failed to be proven objectively.

The SNUH team, led by Professors Kim Hyo-soo and Kwon Yoo-wook, researched key cells and the mechanisms responsible for controlling HSC homeostasis and found a few macrophages expressing triple protein markers (SMA, COX2, DARC) can maintain homeostasis of top HSCs.

When the DARC-Kai1 protein bond is dissolved, hematopoietic stem cells begin to increase, resulting in mass production of blood cells and vice versa when the macrophages DARC protein and the HSCs Kai1 protein combine. Subsequently, if this bonding is controlled, the researchers expect a culture method that mass-produces top HSCs with excellent hematopoietic function can be developed.

This mechanism can also be used to develop treatments for bone marrow dysfunction, such as leukemia and malignant anemia, and increase the success rate of bone marrow transplants.

"If a method is commercialized to mass-produce and store top HSCs while maintaining their youthfulness, it will be possible to develop a customized treatment that can quickly help patients needing a bone marrow transplant," Professor Kim said.

This study was published in the Cell Stem Cell journal.

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SNUH team finds a key cell that keeps top hematopoietic stem cells young - KBR

Bone Marrow Stem Cells Comments Off on SNUH team finds a key cell that keeps top hematopoietic stem cells young – KBR | July 16th, 2022

Introduction

Traumatic brain injury is one of the main causes of deaths, disabilities, and hospitalization in the world. In the USA, around 30% of all injury-related deaths are due to traumatic brain injury.1 Globally, traumatic brain injury affects the lives of about 10 million people each year.2 It happened as the brain tissue is damaged by an external force, the result of direct impact, rapid acceleration or deceleration, a piercing object, and blast waves from an explosion.3 Visual impairment, cognitive dysfunction, hearing loss, and mental health disorders are among the most common complications affecting traumatic brain injury patients and their families. The pathophysiology of traumatic brain injury is not clear since the structure of the brain is complex with many cell types such as neurons, astrocytes, oligodendrocytes, microglia, and multiple subtypes of these cells. Traumatic brain injury occurs in two phases. These are primary (acute) and secondary (late) brain injuries. The primary injury is the initial blow to the head; in this phase, brain tissue and cells such as neurons, glial cells, endothelial cells, and the bloodbrain barrier are damaged by mechanical injury. The secondary injury occurs after primary injury and in these late phases, several toxins are released from the injured cells leading to the formation of cytotoxic cascades, which increase the initial brain damage.4 The primary brain injury causes the dysfunction of the bloodbrain barrier and initiates local inflammation and secondary neuronal injury. In addition, severe and long-term inflammation causes severe neurodegenerative and inflammatory diseases. Repairing of tissue damage needs the inhibition of secondary injury and rapid regeneration of injured tissue.5 Depending on the nature of the injury, neurons and neuroglial cells may be damaged; excessive bleeding may happen, axons may be destroyed and a contusion may occur.6 Moreover, the pathogenesis of traumatic brain injury involves bloodbrain barrier damage, neural inflammation, and diffuse neuronal degeneration.7 Unlike other organs, it has long been thought that mature brain tissue cannot be able to repair itself after injury.8 However, the current research indicated that multipotent neural stem/progenitor cells are residing in some areas of the brain throughout the lifespan of an animal, implying the mature brains ability to produce new neurons and neuroglial cells.9 In the previous decades, several studies have shown that the mature neurons in the hippocampal dentate gyrus of the brain play significant roles in hippocampal-induced learning and memory activities,9 while new olfactory interneurons produced from the subventricular zone are essential for the appropriate functioning of the olfactory bulb network and some specific olfactory behaviors.10 After traumatic brain injuries, clinical evidence indicated that endogenous neural progenitor cells might play an important role in regenerative medicine to treat brain injury because an increased neurogenic regeneration ability has been reported in different types of brain injury models of animal and human studies.11 Nowadays, there is a new therapeutic approach for traumatic brain injury that involves the use of stem cells for neural regeneration and restoration. Exogenous stem cell transplantation has been found to accelerate immature neuronal development and increase endogenous cellular proliferation in the damaged brain region.12 A better understanding of the endogenous neural stem cells regenerative ability as well as the effect of exogenous neural stem cells on proliferation and differentiation may help researchers better understand how to increase functional recovery and brain tissue repair following injury. Therefore, in this study, we discussed the therapeutic effects of stem cells in the repair of traumatic brain injury.

Traumatic brain injury causes severe stress on the brain, making it extremely hard to keep appropriate cognitive abilities. Even though many organs in the body, for example, the skin, can regenerate following injury, the brain tissue may not easily repair. In the adult brain, endogenous neural stem cells are primarily localized to the subventricular zone of the lateral ventricles and the subgranular zone of the hippocampal dentate gyrus.13 In the subventricular zone, neural stem/progenitor cells generate neuronal and oligodendroglial progenies.14 Most of the new neurons produced from the subventricular zone migrate via the rostral migratory stream, eventually becoming olfactory interneurons in the olfactory bulb.15 A few subventricular zone-derived new neurons travel into cortical areas for an unknown cause but may be related to tissue repair or renewal mechanisms.16 Similarly, newly produced dentate gyrus cells travel laterally into the dentate granule cell layer and become fully mature in a few weeks through a process known as adult hippocampus neurogenesis.17 However, it is still unknown whether these neural stem cells in the subventricular zone and dentate gyrus regions can replace the lost neurons following injury.

So far, several studies have assessed the degree of neurogenesis in these two areas and have demonstrated that significant numbers of new cells are continuously generated.9,18 For example, the rat dentate gyrus generates about 9000 new cells each day or 270,000 cells every month.18 A current clinical finding indicated that the whole granular cell population in the deep layer and half of the superficial layer of the olfactory bulb were replaced by newly produced mature neurons for a year.19 A similar study also revealed that adult-produced neurons account for around 10% of the overall number of dentate granule cells in the hippocampus and they are uniformly distributed along the anterior-posterior axis of the dentate gyrus.19 After the finding of continuous adult neurogenesis during the lifetime in the adult animal brain, the functional roles and the significance of this adult neurogenesis, mainly hippocampal neurogenesis concerning learning and memory processes, have been widely explored. Previous studies showed factors that increase hippocampal neurogenesis such as exposure to enriched environments, physical activity, or growth factor therapy may improve cognitive abilities.2022

The newly formed granular cells in the mature dentate gyrus can become functional neurons in the normal hippocampus by demonstrating passive membrane characteristics, generating action potentials, and receiving functional synaptic inputs, as seen in the adult dentate gyrus neurons.23 For instance, mouse strains hereditarily having poor levels of neurogenesis carry out low learning activities than those with a higher level of baseline neurogenesis.2325 A variety of physical and chemical signals influence the proliferation and maturational destiny of cells in the subventricular zone and dentate gyrus. For instance, biochemical variables including serotonin, glucocorticoids, ovarian hormones, and growth factors strongly regulate the proliferative response, implying that cell proliferation in these areas has a significant physiological role.26,27 Besides, physical factors such as exercise and stress produce changes in cell proliferation implying a significant role in network adaptation.28,29 For example, physical exercise might cognitively and physically enhance the production of cells and neurogenesis within the subventricular zone and dentate gyrus, but stress inhibits this type of cellular activity. Furthermore, the physiologic role of these new cells depends on the number of cells being produced, survival rate, differentiation ability, and integration of cells into existing neuronal circuity.24,30

The subventricular zone and hippocampus contain neural stem cells that respond to a variety of stimuli. Different kinds of experimental traumatic brain injury models such as fluid percussive injury,31,32 controlled cortical impact injury,33,34 closed-head weight drop injury,35 and acceleration-impact injury36 have shown increased neural stem cells activation. All of these experimental studies have shown the most prevalent and notable endogenous cell response after traumatic brain injury is an elevated cell proliferation within neurogenic areas of the dentate gyrus and subventricular zone. It is well accepted that enhanced production of new neurons following the traumatic brain injury was detected predominantly in the hippocampus in the more seriously injured animals in many experimental studies.37 More studies have discovered that injury-enhanced new granule neurons send out axonal projections into the targeted CA3 region implying their integration into the existing hippocampal circuitry,37,38 and this injury-induced endogenous neurogenic stem cells response is directly associated with the inherent cognitive functional recovery after traumatic brain injury of rodents.39,40

In the human brain, the extent and physiology of the adult neural generation are not well understood. A study on human brain samples taken from the autopsy revealed neural stem cells with proliferative ability have been observed within the subventricular zone and the hippocampus.41,42 Conversely, a more recent study has shown that neurogenesis in the subventricular zone and movement of new neurons from the subventricular zone to the olfactory bulbs and neocortex are restricted and only seen in the early childhood period.43,44 Therefore, credible evidence of traumatic brain injury-initiated neurogenesis in the human brain is inadequate because of the difficulties of collecting human brain samples and technical challenges to birth-dating neural stem cells.

After traumatic brain injury, injury-initiated neural cell loss is permanent. Given the restricted amount of endogenous neurogenic stem cells, neural transplantation supplementing exogenous stem cells to the damaged brain tissue is a potential treatment for post-traumatic brain injury regeneration.45 Especially, the transplanted cells will not only be able to replace the damaged neural cells but also give neurotrophic support in hopes of reestablishing and stabilizing the damaged brain tissue.45 Clinical evidence revealed intervention with stem cell secretome may significantly improve neural inflammation after traumatic brain injury and other neurological deficits in humans.46 Besides, the combined effects of bioscaffold and exosomes can aid in the transportation of stem cells to damaged areas as well as enhance their survival and facilitate successful treatment.47 Despite the rapid progression of brain infarction, the decreased proliferation of neural stem cells, and the delayed initiation of neurological recovery were observed in the aged rat model compared with a young rat after stroke, the restorative capability of the brain by stem cell therapy is still present in the aged rat.48 Compared to stem cell monotherapies which are still uniformly failed in clinical practice, combination therapy with hypothermia has potential therapeutic effects on the physiology of the aged brain and may be required for effective protection of the brain following stroke.49 After several years of biomaterials study for regeneration of peripheral nerve, a new 3D printing strategy is developing as a good substitution for nerve autograft over large gap injuries. The applications of 3D printing technologies can help in improving long-distance peripheral nerve regeneration since it is a leading device to give one path for better nerve guidance.50 Up to now, various categories of stem cell therapy have been tested for post-traumatic brain injury. These include embryonic stem cells, adult-derived neural stem cells, mesenchymal stem cells, and induced pluripotent stem cells.

Embryonic stem cells obtained from fetal or embryonic brain tissues are highly considered for neural transplantation because of their ability of plasticity and have the capacity to self-repair and differentiation into all germinal layers. They can differentiate, migrate, and innervate as transplanted into a receiver brain tissue.51 In previous clinical brain injury studies, neural stem cells derived from the embryonic human brain could survive for a long time, migrating to the contralateral cortex and differentiating into mature neural cells and microglia following transplantation into the damaged brain tissue.52 Implanted neurogenic stem cells obtained from human fetal stem cells may differentiate into adult neurons and release growth factors increasing the cognitive functional recovery of the damaged brain.53 Interestingly, the long-term survival rate of transplanted neural stem cells obtained from mice embryonic brains was seen for up to 1 year with a high degree of migration in the damaged brain and maturation into neurons or neuroglial cells along with enhanced motor and spatial learning functions of the brain tissue.5456 In addition, embryonic stem cells expressing growth factors or early differentiated into neurotransmitter expressing adult neurons after in vitro manipulation have revealed improved transplant survival and neuronal differentiation following grafted into the damaged brain, and the receivers have better recovery in motor and cognitive activities.5759 Even though embryonic stem cells have a high rate of survival and plasticity in neuronal transplantation, the ethical concerns, risk of transplant rejection, and the likelihood of teratoma development restrict their therapeutic use for traumatic brain injury.45

Neural stem cells are multipotent cells that can differentiate into neural cells but have a limited ability to differentiate into other tissue types.60 Neurogenic stem cells are located in the subventricular zones of the lateral ventricle, the hippocampal dentate gyrus, and other areas of the brain like the cerebral cortex, amygdala, hypothalamus, and substantia nigra. They could be isolated, developed in culture media, and produce many neural lineages that can be used in the treatment of neurological disorders as an important element of cellular-replacement therapy.61 Adult neural stem cells were transplanted into damaged parts of the brain in a traumatic brain injury rat model. These cells survived the transplantation process and moved to a damaged site when expressing markers for adult microglia and oligodendrocytes.62 Interestingly, one most recent study indicated that Korean red ginseng extract-mediated astrocytic heme oxygenase-1 induction contributes to the proliferation and differentiation of adult neural stem cells by upregulating astrocyteneuronal system cooperation.63 Another study revealed that following neural stem cell transplantation to the hippocampal region, injured rats had developed better cognitive function.64 The administration of combined therapies such as human neural stem/progenitor cells and curcumin-loaded noisome nanoparticles significantly improve brain edema, gliosis, and inflammatory responses in the traumatic brain injury rat model.65 Furthermore, in traumatic brain injury rat models, as neural stem cells were injected intravenously, they resulted in a decreased neurologic impairment and less edema because of the anti-inflammatory and anti-apoptotic features of neural stem cells.60,66 The ideal transplantation timeframe is 714 days,60 beyond which the glial scar forms, restricting perfusion and graft survival.67 The ability to transport cells to the desired location is a key obstacle with neural stem cell transplantation. Neural stem cells can be administered intrathecally, intravenously, and intra-arterial infusion. Conversely, a nanofiber scaffold implantation was proposed by Walker et al as a new strategy to be implemented to give the support essential for cell proliferation, which provides direction to future research.68

Mesenchymal stem cells are multipotent stromal that can differentiate into mesenchymal and non-mesenchymal tissue, such as neural tissue.69 They are obtained from different types of tissues.70 The accessibility, availability, and differentiation ability of these cells have drawn the attention of researchers performing studies in regenerative medicine. A previous study revealed the differentiation capacity of mesenchymal stem cells into neuronal cells. This study found that when rat and human mesenchymal stem cells are exposed to various experimental culture conditions, they can differentiate into neural and neuroglial cells.69 Besides, mesenchymal stem cells have also been demonstrated to enhance the proliferation and differentiation of native neural stem cells; the mechanism of which may be directly associated with chemokines produced by mesenchymal stem cells or indirectly through stimulation of adjacent astrocytes.70 In addition to their capacity to differentiate, mesenchymal stem cells selectively move to damaged tissues in traumatic brain injury rat models, where they develop into neurons and astrocytes and enhance motor function.71 The possible mechanism of action through which this occurs is linked to chemokines, growth factors,72 and adhesion factors, like the vascular cell adhesion molecule (VCAM-1), which permits mesenchymal stem cells to adhere to the endothelium of damaged organ.73 Mesenchymal stem cell transplantation has become a potential and safe treatment of choice for traumatic brain injuries because of its anti-inflammatory capability by regulating leukocyte and inflammatory factors such as IL-6, CRP, and TNF-a.74,75 Treatment with mesenchymal stem cell-derived extracellular vesicles greatly increased neurogenesis and neuroplasticity in a pig model of hemorrhagic stroke and traumatic brain damage.76 Currently, stem cell therapy using mesenchymal stromal cells has been widely investigated in preclinical models and clinical trials for the treatment of several neurological illnesses, including traumatic brain injury. Mesenchymal stem cells investigated for the treatment of traumatic brain injury in these clinical trials include bone marrow-derived stem cells, amnion-derived multipotent progenitor cells, adipose-derived stem cells, umbilical cord-derived stem cells, and peripheral blood-derived stem cells.7779 Those undifferentiated mesenchymal-derived cells have a heterogeneous cell population that includes stem and progenitor cells. They can be stimulated to differentiate into a neuronal cell phenotype in vitro. In the damaged brain tissue, these cells can generate a large number of growth factors, cytokines, and extracellular matrix substances that have neurotrophic or neuroprotective effects.80,81

From all mesenchymal stem cells, the effect of bone marrow-derived mesenchymal stem cells on traumatic brain injury has been fully investigated. According to previous studies, mesenchymal stem cells injected directly into the injured brain, or through intravenous or intra-arterial injections during the acute, sub-acute, or chronic phase following traumatic brain injury, have been shown to significantly reduce neurological abnormalities in motor and cognitive abilities.7779,82 The therapeutic effect of mesenchymal stem cells is mostly because of the bioactive molecules they produced to facilitate the endogenous plasticity and remodeling of the recipient brain tissue instead of direct neural repair as direct neuronal differentiation and long-term viability were rarely seen.80 A more recent study found that the injection of cell-free exosomes obtained from human bone marrow-derived mesenchymal stromal cells can increase the functional recovery of damaged animals after traumatic brain injury.83 Another study used a traumatic rodent model to evaluate the anti-inflammatory and immunoregulatory properties of mesenchymal stem cells. When compared to the control group, neurological function was improved in the treatment groups from 3 to 28 days. Mesenchymal stem cell therapy significantly decreased the amount of microglia or macrophages, neutrophils, CD3 lymphocytes, apoptotic cells in the damaged cortex, and proinflammatory cytokines.81 The main challenge of using mesenchymal stem cells for traumatic brain injury treatment is the long-term possibility of brain malignancy development because of the mesenchymal stromal cells ability to antitumor response suppression.84

In a recent study, seven traumatic brain injury patients were given a mesenchymal stem cells transplant during a cranial operation and then administered a second dose intravenously. At the end of the 6-month follow-up period, patients exhibited better neurological function with no signs of toxicity.85

Recent studies revealed that the administration of exosomes-derived human umbilical cord mesenchymal stem improves sensorimotor function and spatial learning activities in rat models following brain injuries. Furthermore, the applications of these cells extensively decreased proinflammatory cytokine expression via inhibiting the NF-B signaling pathway, reduced neuronal apoptosis, reduced inflammation, and increased neural regeneration ability in the injured cortex of rats following the injuries.86 Human umbilical cord-derived mesenchymal stem cells have better anti-inflammatory activity that may prevent and decrease secondary brain injury caused by the immediate discharge of inflammatory factors following traumatic brain injury.87 In traumatic brain injury rat models, the transplantation of umbilical cord-derived mesenchymal stem cells triggers the trans-differentiation of T-helper 17 into T regulatory, which in turn repairs neurological deficits and improves learning and memory function.88

To see the therapeutic effects of transplanted induced pluripotent stem cells compared to that of embryonic stem cells, Wang et al demonstrated animal models of ischemia and three different treatment options, which consist of pluripotent stem cells, embryonic stem cells, and phosphate-buffered saline for the control. The rodents were given an injection into the left lateral ventricle of the brain. Embryonic stem cell treatment group rodents showed a significant improvement in glucose metabolism within two-week period. However, 1 month following treatment, neuroimaging tests were done and it was revealed that both pluripotent stem cell and embryonic stem cell treatment groups had improved neurologic scores as compared to the control group, suggesting that the treatment groups showed better recovery of their cognitive function. Further investigation indicated that the implanted cells survived and traveled to the area of injury. Finally, the investigator of this study concluded that induced pluripotent stem cells may be a better option than embryonic stem cells.57 Different studies showed that induced pluripotent stem cells improved motor and cognitive function in the host mouse brain tissue, and these cells migrate the injured brain areas from the injection site.89,90 Until now, there are limited studies on induced pluripotent stem cell therapy for brain injuries. This is because of the difficulty of obtaining induced pluripotent stem cells, high therapy costs, and technique limitations.

In preclinical and clinical trials, advanced progress has been made in stem cell-based therapy for traumatic brain injury patients. Various studies reported the therapeutic effect of stem cells for regenerating damaged brain tissue. However, because of the complexity and variability of brain injuries, post-traumatic brain injury neuronal regeneration and repair remain a long-term goal. There are numerous unresolved challenges for successful stem cell treatment. For endogenous restoration via mature neural regeneration, methods guiding the movement of new neuronal cells to the area of damaged tissue and maintaining long-term survival are very important. In stem cell therapy, the inherent features of transplanted cells and the local host micro-environment influences the fate of grafted cells, an appropriate cell source, and a host environment, which are required for effective transplantation. Therefore, these problems should be solved in preclinical traumatic brain injury trials before stem cell-based treatments could be used in the clinic. The therapeutic application of neural stem cell treatment, whether via manipulation of endogenous or implantation of exogenous neural stem cells, is a method that has been shown in multiple studies to have substantial potential to increase brain function recovery in persons suffering from traumatic brain injury-related disability. However, further studies need to be done on the therapeutic application of stem cells for traumatic brain injury due to our poor understanding of possible consequences, unknown ethical issues, routes of administration, and the use of mixed treatment.

All authors declared no conflicts of interest for this study.

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59. Blaya MO, Tsoulfas P, Bramlett HM, Dietrich WD. Neural progenitor cell transplantation promotes neuroprotection, enhances hippocampal neurogenesis, and improves cognitive outcomes after traumatic brain injury. Exp Neurol. 2015;264:6781. doi:10.1016/j.expneurol.2014.11.014

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63. Kim M, Moon S, Jeon HS, et al. Dual effects of Korean red ginseng on astrocytes and neural stem cells in traumatic brain injury: the HO-1Tom20 axis as a putative target for mitochondrial function. Cells. 2022;11(5):892. doi:10.3390/cells11050892

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Repair of Traumatic Brain Injury | SCCAA - Dove Medical Press

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Fibrosis is the thickening of various tissues caused by the deposition of fibrillar extracellular matrix (ECM) in tissues and organs as part of the bodys wound healing response to various forms of damage. When accompanied by chronic inflammation, fibrosis can go into overdrive and produce excess scar tissue that can no longer be degraded. This process causes many diseases in multiple organs, including lung fibrosis induced by smoking or asbestos, liver fibrosis induced by alcohol abuse, and heart fibrosis often following heart attacks. Fibrosis can also occur in the bone marrow, the spongy tissue inside some bones that houses blood-producing hematopoietic stem cells (HSCs) and can lead to scarring and the disruption of normal functions.

Chronic blood cancers known as myeloproliferative neoplasms (MPNs) are one example, in which patients can develop fibrotic bone marrow, or myelofibrosis, that disrupts the normal production of blood cells. Monocytes, a type of white blood cell belonging to the group of myeloid cells, are overproduced from HSCs in neoplasms and contribute to the inflammation in the bone marrow environment, or niche. However, how the fibrotic bone marrow niche itself impacts the function of monocytes and inflammation in the bone marrow was unknown.

Now, a collaborative team from Penn, Harvard, the Dana-Farber Cancer Institute (DFCI), and Brigham and Womens Hospital has created a programmable hydrogel-based in vitro model mimicking healthy and fibrotic human bone marrow. Combining this system with mouse in vivo models of myelofibrosis, the researchers demonstrated that monocytes decide whether to enter a pro-inflammatory state and go on to differentiate into inflammatory dendritic cells based on specific mechanical properties of the bone marrow niche with its densely packed ECM molecules. Importantly, the team found a drug that could tone down these pathological mechanical effects on monocytes, reducing their numbers as well as the numbers of inflammatory myeloid cells in mice with myelofibrosis. The findings are published in Nature Materials.

We found that stiff and more elastic slow-relaxing artificial ECMs induced immature monocytes to differentiate into monocytes with a pro-inflammatory program strongly resembling that of monocytes in myelofibrosis patients, and the monocytes to differentiate further into inflammatory dendritic cells, says co-first author Kyle Vining, who recently joined Penn.More viscous fast-relaxing artificial ECMs suppressed this myelofibrosis-like effect on monocytes. This opened up the possibility of a mechanical checkpoint that could be disrupted in myelofibrotic bone marrow and also may be at play in other fibrotic diseases. Vining will be appointedassistant professor of preventive and restorative sciences in theSchool of Dental Medicine and the Department of Materials Sciences in theSchool of Engineering and Applied Science, pending approval by Penn Dental Medicines personnel committees and the Provosts office.

Vining worked on the study as a postdoctoral fellow at Harvard in the lab of David Mooney. Our study shows that the differentiation state of monocytes, which are key players in the immune system, is highly regulated by mechanical changes in the ECM they encounter, says Mooney, who co-led the study with DFCI researcher Kai Wucherpfennig. Specifically, the ECMs viscoelasticity has been a historically under-appreciated aspect of its mechanical properties that we find correlates strongly between our in vitro and the in vivo models and human disease. It turns out that myelofibrosis is a mechano-related disease that could be treated by interfering with the mechanical signaling in bone marrow cells.

Mooney is also the Robert P. Pinkas Family Professor of Bioengineering at Harvard and leads the Wyss Institutes Immuno-Materials Platform. Wucherpfennig is director of DFCIs Center for Cancer Immunotherapy Research, professor of neurobiology at Brigham and Harvard Medical School, and an associate member of the Broad Institute of MIT and Harvard. Mooney, together with co-senior author F. Stephen Hodi, also heads the Immuno-engineering to Improve Immunotherapy (i3) Center, which aims to create new biomaterials-based approaches to enhance immune responses against tumors. The new study follows the Centers road map. Hodi is director of the Melanoma Center and The Center for Immuno-Oncology at DFCI and professor of medicine at Harvard Medical School.

The mechanical properties of most biological materials are determined by their viscoelastic characteristics. Unlike purely elastic substances like a vibrating quartz, which store elastic energy when mechanically stressed and quickly recover to their original state once the stress is removed, slow-relaxing viscoelastic substances also have a viscous component. Like the viscosity of honey, this allows them to dissipate stress under mechanical strain by rapid stress relaxation. Viscous materials are thus fast-relaxing materials in contrast to slow-relaxing purely elastic materials.

The team developed an alginate-based hydrogel system that mimics the viscoelasticity of natural ECM and allowed them to tune the elasticity independent from other physical and biochemical properties. By tweaking the balance between elastic and viscous properties in these artificial ECMs, they could recapitulate the viscoelasticity of healthy and scarred fibrotic bone marrow, whose elasticity is increased by excess ECM fibers. Human monocytes placed into these artificial ECMs constantly push and pull at them and in turn respond to the materials mechanical characteristics.

Next, the team investigated how the mechanical characteristics of stiff and elastic hydrogels compared to those in actual bone marrow affected by myelofibrosis. They took advantage of a mouse model in which an activating mutation in a gene known as Jak2 causes MPN, pro-inflammatory signaling in the bone marrow, and development of myelofibrosis, similar to the disease process in human patients with MPN. When they investigated the mechanical properties of bone marrow in the animals femur bones, using a nanoindentation probe, the researchers measured a higher stiffness than in non-fibrotic bone marrow. Importantly, we found that the pathologic grading of myelofibrosis in the animal model was significantly correlated with changes in viscoelasticity, said co-first author Anna Marneth, who spearheaded the experiments in the mouse model as a postdoctoral fellow working with Ann Mullally, a principal investigator at Brigham and DFCI, and another senior author on the study.

An important question was whether monocytes response to the mechanical impact of the fibrotic bone marrow niche could be therapeutically targeted. The researchers focused on an isoform of the phosphoinositide 3-kinase (PI3K)-gamma protein, which is specifically expressed in monocytes and closely related immune cells. PI3K-gamma is known for regulating the assembly of a cell-stiffening filamentous cytoskeleton below the cell surface that expands in response to mechanical stress, which the team also observed in monocytes encountering a fibrotic ECM. When they added a drug that inhibits PI3K-gamma to stiff elastic artificial ECMs, it toned down their pro-inflammatory response and, when given as an oral treatment to myelofibrosis mice, significantly lowered the number of monocytes and dendritic cells in their bone marrow.

This research opens new avenues for modifying immune cell function in fibrotic diseases that are currently difficult to treat. The results are also highly relevant to human cancers with a highly fibrotic microenvironment, such as pancreatic cancer, says Wucherpfennig.

Adapted from a press release written by Benjamin Boettner of the Wyss Institute for Biologically Inspired Engineering at Harvard University.

Other authors on the study are Harvards Kwasi Adu-Berchie, Joshua M. Grolman, Christina M. Tringides, Yutong Liu, Waihay J. Wong, Olga Pozdnyakova, Mariano Severgnini, Alexander Stafford, and Georg N. Duda.

The study was funded by the National Cancer Institute of the National Institutes of Health (Grant CA214369), National Institute of Dental & Craniofacial Research of the National Institutes of Health (grants DE025292 and DE030084), Food and Drug Administration (Grant FD006589), and Harvard University Materials Research Science and Engineering Center (Grant DMR 1420570).

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Deconstructing the mechanics of bone marrow disease | Penn Today - Penn Today

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Krabbe disease is one of many hundreds of inherited metabolic disorders. Named after the Danish neurologist Knud Krabbe, the disease causes progressive damage to the nervous system, eventually resulting in the death of the individual. The disease is common in newborns before they reach six months of age and treatment must start at the earliest. Most newborns affected by Krabbe disease do not reach the age of two.

Krabbe disease is caused due to genetic mutation on the 14th chromosome in an infant. A child needs to inherit two copies of the abnormal genome from both its parents, after which it has a 25 percent chance of inheriting both the recessive genes and developing the disease.

On inheriting the defective genome, the body doesnt produce enough of the enzyme galactosylceramidase (GALC). Galactosylceramidase is essential for breaking down unmetabolised lipids like glycosphingolipid and psychosine in the brain. These unmetabolised lipids are toxic to some of the non-neuron cells present in the brain.

Late-onset Krabbe disease, however, can be caused by a different genetic mutation which leads to a lack of a different enzyme, known as active saposin A.

Symptoms between early-onset and late-onset Krabbe disease differ slightly. Infants suffering from early-onset Krabbe disease suffer from symptoms like excessive irritability, difficulty swallowing, vomiting, unexplained fevers, and partial unconsciousness. Other common neuropathic symptoms include hypersensitivity to sound, muscle weakness, slowing of mental and motor development, spasticity, deafness, optic atrophy, optic nerve enlargement, blindness, and paralysis.

Late-onset Krabbe disease emerges with symptoms like the development of cross-eyes, slurred speech, slow development, and loss of motor functions.

The disease is diagnosed after a physician conducts a primary physical exam. A blood or skin tissue biopsy can test for GALC levels in the body and low levels can indicate the presence of Krabbe disease. Further testing through imaging scans (MRI), nerve conduction studies, eye examination, genetic testing and amniocentesis can also help diagnose the disease.

There is no cure for Krabbe disease. Treatment is mostly palliative in nature with a focus towards dealing with symptoms and providing supportive care. Experimental trials using hematopoietic stem cell transplant (HSCT), bone marrow transplantation, stem cell therapy, and gene therapy have seen some results in the small number of patients that they have been used on.

(Edited by : Shoma Bhattacharjee)

First Published:Jul 15, 2022, 06:32 AM IST

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Krabbe disease, which mostly affects newborns causes, symptoms, and treatment - CNBCTV18

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Under embargo until Thursday 14 July 2022 at 16:00 (London time), 14 July 2022 at 11:00 (US Eastern Time).

Newswise The discovery of 14 inherited genetic changes which significantly increase the risk of a person developing a symptomless blood disorder associated with the onset of some types of cancer and heart disease is published today in Nature Genetics. The finding, made in one of the largest studies of its kind through genetic data analysis on 421,738 people, could pave the way for potential new approaches for the prevention and early detection of cancers including leukaemia.

Led by scientists from the Universities of Bristol and Cambridge, the Wellcome Sanger Institute, the Health Research Institute of Asturias in Spain, and AstraZeneca, the study reveals that specific inherited genetic changes affect the likelihood of developing clonal haematopoiesis, a common condition characterised by the development of expanding clones of multiplying blood cells in the body, driven by mutations in their DNA.

Although symptomless, the disorder becomes ubiquitous with age and is a risk factor for developing blood cancer and other age-related diseases. Its onset is a result of genetic changes in our blood-making cells.

All human cells acquire genetic changes in their DNA throughout life, known as somatic mutations, with a specific subset of somatic mutations driving cells to multiply. This is particularly common in professional blood-making cells, known as blood stem cells, and results in the growth of populations of cells with identical mutations known as clones.

Using data from the UK Biobank, a large-scale biomedical database and research resource containing genetic and health information from half a million UK participants, the team were able to show how these genetic changes relate not only to blood cancers but also to tumours that develop elsewhere in the body such as lung, prostate and ovarian cancer.

The team found that clonal haematopoiesis accelerated the process of biological ageing itself and influenced the risk of developing atrial fibrillation, a condition marked by irregular heartbeats.

The findings also clearly established that smoking is one of the strongest modifiable risk factors for developing the disorder, emphasising the importance of reducing tobacco use to prevent the conditions onset and its harmful consequences.

Dr Siddhartha Kar, UKRI Future Leaders Fellow at the University of Bristol and one of the studys lead authors from Bristols MRC Integrative Epidemiology Unit(IEU), said: Our findings implicate genes and the mechanisms involved in the expansion of aberrant blood cell clones and can help guide treatment advances to avert or delay the health consequences of clonal haematopoiesis such as progression to cancer and the development of other diseases of ageing.

Professor George Vassiliou, Professor of Haematological Medicine at the University of Cambridge and one of the studys lead authors, added: Our study reveals that the cellular mechanisms driving clonal haematopoiesis can differ depending on the mutated gene responsible. This is a challenge as we have many leads to follow, but also an opportunity as we may be able to develop treatments specific to each of the main subtypes of this common phenomenon.

Dr Pedro M. Quiros, formerly researcher at the Wellcome Sanger Institute and the University of Cambridge, and now Group Leader at the Health Research Institute of Asturias (Spain) and another of the studys lead authors says: We were particularly pleased to see that some of the genetic pathways driving clonal haematopoiesis appear to be susceptible to pharmacological manipulation and represent prioritised targets for the development of new treatments.

The study was funded by UK Research and Innovation (UKRI), Cancer Research UK (CRUK), Wellcome, the Royal Society, the Carlos III Health Institute, the Leukaemia and Lymphoma Society, and the Rising Tide Foundation for Clinical Cancer Research.

Paper

Genome-wide analyses of 200,453 individuals yield new insights into the causes and consequences of clonal hematopoiesis by Kar SP, et al. in Nature Genetics.

Ends

Further information:

Clonal haematopoiesis is the development of mutations in genes involved in blood cell production. It is diagnosedwhen a test on a person's blood or bone marrow sample shows that blood cells are carrying one of the genetic mutations associated with the condition. Clonal haematopoiesis becomes increasingly common with age, affecting more than one in every ten individuals older than 60 years.

Notes to editors

Paper: an embargoed copy of the paper is available to download here.

Issued by the University of Bristol Media Team.

Continued here:
Scientists Discover Genes That Affect the Risk of Developing Pre-Leukemia - Newswise

Bone Marrow Stem Cells Comments Off on Scientists Discover Genes That Affect the Risk of Developing Pre-Leukemia – Newswise | July 16th, 2022

This bone marrow market report provides details of new recent developments, trade regulations, import export analysis, production analysis, value chain optimization, market share, impact of domestic and localised market players, analyses opportunities in terms of emerging revenue pockets, changes in market regulations, strategic market growth analysis, market size, category market growths, application niches and dominance, product approvals, product launches, geographic expansions, technological innovations in the market. To gain more info on the bone marrow market contact Data Bridge Market Research for anAnalyst Brief,our team will help you take an informed market decision to achieve market growth.

The bone marrow market is expected to gain market growth in the forecast period of 2021 to 2028. Data Bridge Market Research analyses that the market is growing with the CAGR of 5.22% in the forecast period of 2021 to 2028 and is estimated to reach 13,899.60 USD Million by 2028. The growing amount of bone marrow diseases will help in escalating the growth of the bone marrow market. Bone marrow transplant also referred to as hematopoietic stem cell. It is a soft vascular tissue present in the interior of long bones. It comprises of two types of stem cells, that are hematopoietic and mesenchymal stem cells. Bone marrow is mainly responsible for the haematopoiesis, (formation of blood cells), production of lymphocytes, and the storage of fats. The bone marrow transplant is the last alternative generally recommended by the physicians in the cases of fatal bone marrow diseases and bone or skin cancer.

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Major factors that are boosting the growth of the bone marrow market in the forecast period are the growing of the incidences of non-Hodgkin and Hodgkin lymphoma, thalassemia, and leukemia, along with the common bone marrow diseases around the world, the developments in the technology and the enhancing of the healthcare infrastructure. Furthermore, the advancing signs of bone marrow transplant for heart and neuronal disorders, increasing funding in the logistic services and the growing per capita of the healthcare expenses are some of the other factors anticipated to further propel the growth of the bone marrow market in the coming years. However, the high expenditure for the treatment, shortage of the bone marrow donors and instability of the repayment are few of the factors further responsible for the impeding the growth of the bone marrow market in the near future.

Bone MarrowMarket Scope and Market Size

The bone marrow market is segmented on the basis of transplantation type, disease indication and end user. The growth amongst these segments will help you analyse meagre growth segments in the industries, and provide the users with valuable market overview and market insights to help them in making strategic decisions for identification of core market applications.

To Gain More Insights into the Market Analysis, Browse Summary of the Research Report@ https://www.databridgemarketresearch.com/reports/global-bone-marrow-market

Bone MarrowMarket Country Level Analysis

The bone marrow market is analysed and market size insights and trends are provided by country, transplantation type, disease indication and end user as referenced above. The countries covered in the bone marrow market report are the U.S., Canada and Mexico in North America, Germany, France, U.K., Netherlands, Switzerland, Belgium, Russia, Italy, Spain, Turkey, Rest of Europe in Europe, China, Japan, India, South Korea, Singapore, Malaysia, Australia, Thailand, Indonesia, Philippines, Rest of Asia-Pacific (APAC) in the Asia-Pacific (APAC), Saudi Arabia, U.A.E, South Africa, Egypt, Israel, Rest of Middle East and Africa (MEA) as a part of Middle East and Africa (MEA), Brazil, Argentina and Rest of South America as part of South America.

Europe dominates the bone marrow market because of the occurrence of the increasing number of innovative healthcare centers. Furthermore, the healthcare systems have introduced the bone marrow transplant in their contributions and the state-of-the-art public facilities which will further boost the growth of the bone marrow market in the region during the forecast period. North America is projected to observe significant amount of growth in the bone marrow market because of the growing cases of chronic diseases such as blood cancer. Moreover, the increasing of the geriatric population is one of the factors anticipated to propel the growth of the bone marrow market in the region in the coming years.

The country section of the bone marrow market report also provides individual market impacting factors and changes in regulation in the market domestically that impacts the current and future trends of the market. Data points such as consumption volumes, production sites and volumes, import export analysis, price trend analysis, cost of raw materials, down-stream and upstream value chain analysis are some of the major pointers used to forecast the market scenario for individual countries. Also, presence and availability of global brands and their challenges faced due to large or scarce competition from local and domestic brands, impact of domestic tariffs and trade routes are considered while providing forecast analysis of the country data.

Competitive Landscape and Bone MarrowMarket Share Analysis

The bone marrow market competitive landscape provides details by competitor. Details included are company overview, company financials, revenue generated, market potential, investment in research and development, new market initiatives, global presence, production sites and facilities, production capacities, company strengths and weaknesses, product launch, product width and breadth, application dominance. The above data points provided are only related to the companies focus related to bone marrow market.

The major players covered in the bone marrow market report are AGendia, Agilent Technologies, Inc., Ambrilia Biopharma Inc., Astellas Pharma Inc., diaDexus, Illumina, Inc., QIAGEN, F Hoffmann-La Roche Ltd, Sanofi, Stryker Corporation, PromoCell GmbH, STEMCELL Technologies Inc., Lonza, ReachBio LLC, AllCells, ATCC, Lifeline Cell Technology., Conversant bio, HemaCare, Mesoblast Ltd., Merck KGaA, Discovery Life Sciences., ReeLabs Pvt. Ltd., Gamida Cell, among other domestic and global players. Market share data is available for global, North America, Europe, Asia-Pacific (APAC), Middle East and Africa (MEA) and South America separately. DBMR analysts understand competitive strengths and provide competitive analysis for each competitor separately.

Browse the complete table of contents at https://www.databridgemarketresearch.com/toc/?dbmr=global-bone-marrow-market

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Original post:
Bone Marrow Market Global Projection By Key Players AGendia, Agilent Technologies, Inc., Ambrilia Biopharma Inc Analysis and Forecast to 2028 ...

Bone Marrow Stem Cells Comments Off on Bone Marrow Market Global Projection By Key Players AGendia, Agilent Technologies, Inc., Ambrilia Biopharma Inc Analysis and Forecast to 2028 … | July 8th, 2022

Sickle cell disease (SCD) is a debilitating illness affecting up to 40% of the population in some African countries. Its caused by mutations in the gene that makes haemoglobin the protein that carries oxygen in red blood cells.

It might one day be possible to treat this disease using gene editing by switching back on the production of a healthy form of haemoglobin called foetal haemoglobin, which is usually only produced by the body when were in the womb.

But a new study testing this promising new treatment in mice has found that scientists still have a long way to go before it can be attempted in humans. The research has been published in Disease Models & Mechanisms.

Healthy red blood cells (RBCs) are shaped similar to a donut but with an indentation instead of a hole.

In sickle cell disease the abnormal haemoglobin distorts the RBCs shape when they arent carrying oxygen. Instead, sickled RBCs are C-shaped, like the farm tool called a sickle, and they become hard and sticky, and die earlier.

Because of their shape, sickled RBCs can become stuck and stop blood flow when travelling through small blood vessels. This causes patients to suffer from episodes of excruciating pain, organ damage and a reduced life-expectancy.

Although current treatments have reduced complications and extended the life expectancies of affected children, most still die prematurely.

Red blood cells are made from haematopoietic stem cells in our bone marrow. These stem cells are able to develop into more than one cell type, in a process called haematopoiesis.

Researchers hope to edit the genes of these stem cells so that they produce RBCs with foetal haemoglobin instead of the abnormal protein and can be reintroduced into the body to alleviate the symptoms of SCD.

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Unfortunately, they found that although two types of lab mice had the symptoms of sickle cell disease, their foetal haemoglobin gene and surrounding DNA were not properly configured, making the stem-cell treatment ineffective or even harmful.

These mice called Berkley and Townes mice were genetically engineered in different ways to carry several human haemoglobin genes (replacing the mice genes) so scientists could study sickle cell disease in an animal model.

The researchers removed stem cells from the mice and used CRISPIR-Cas9 to try to turn on the healthy foetal haemoglobin gene. They then put the reprogrammed stem cells back into the mice and monitored the animals for 18 weeks to find out how the treatment affected them.

Surprisingly, 70% of Berkley mice died from the therapy and production of foetal haemoglobin was activated in only 3.1% of the stem cells. On the other hand, treatment did not affect the survival of Townes mice and even activated the foetal haemoglobin gene in 57% of RBCs.

Even then, the levels of foetal haemoglobin produced were seven to 10 times lower than seen when this approach was used in human cells grown in the laboratory and were not high enough to reduce clinical signs of sickle cell disease.

We realised that we did not know enough about the genetic configurations of these mice, says senior author Dr Mitchell Weiss, chair of the haematology department at St Jude Childrens Research Hospital, US.

The researchers sequenced the mices haemoglobin genes and surrounding DNA, and discovered that Berkley mice instead of having a single copy of the mutated human gene had 22 randomly arranged, broken-up copies of the mutated human sickle cell disease gene and 27 copies of the human foetal haemoglobin.

This caused the fatal effects seen and meant that the mice cannot be used to test this treatment in the future.

Our findings will help scientists using the Berkeley and Townes mice decide which to use to address their specific research question relating to sickle cell disease or haemoglobin, concludes Weiss.

Additionally, this work provides a reminder for scientists to carefully consider the genetics of the mice that they are using to study human diseases and find the right mouse for the job.

Read more:
Sickle cell disease gene therapy study set back by the mice - Cosmos

Bone Marrow Stem Cells Comments Off on Sickle cell disease gene therapy study set back by the mice – Cosmos | July 8th, 2022

Returning home after a Fathers Day trip to New York City with his daughter in 2016, Scott Kesel thought he had come down with the flu. Bloodwork showed his blood platelets were lower than normal. He followed up with his regular physician and was given the news: he had chronic myelomonocytic leukemia (CMML).

CMML is a rare type of blood cancer that starts in the bone marrow, where blood cells are made. It can involve other areas of the body. There are only about 1,100 cases in the U.S. each year and its more common in people over age 60.

As a Canandaigua resident, Scott started his cancer journey at Wilmot Cancer Institutes Sands Cancer Center at F.F. Thompson. His oncologist laid out all the options: chemo and a stem cell transplant.

Knowing he would need a transplant, his team at Sands had him transfer to Wilmots Hematology team, where he began seeing Jason Mendler, M.D., and his transplant doctor, Omar Aljitawi, M.B.B.S.

He had chemotherapy at Wilmot, where he got to know the infusion nursing staff.

They have put a mindset in place thats so beneficial to the patient, he says.

For a stem cell transplant, his brother was the closest match they could find, although he was only a half-match. That left the option for a haplo-identical transplant available. Historically, it was required to have a closer match in order to do a transplant. With a haploidentical transplant, the donor is only half-matched. Its a newer procedure that is not available at all transplant centers, but the doctors at Wilmot have been performing the surgery since 2015.

He underwent the transplant but, unfortunately, in Scotts case, it didnt work.

For a short period, Scott went to another institution for a clinical trial. Unfortunately, that didnt work either. He developed pancreatitis and had to drop out of the trial. He also experienced cold agglutinin disease, which caused his immune system to attack his red blood cells. Cold temperatures can trigger it and he had to stay at Wilmot for about a month in a temperature-controlled room, set at 80 degrees at all times, to overcome it.

Once that resolved, the team at Wilmot suggested another treatment option to try on Scotts leukemia: a transplant with stem cells from an umbilical cord donation. Umbilical cord blood stem cells came from Australia and Spain to try to save Scotts life. He had only two cord blood units available and he needed both to have a successful transplant, which was his only viable chance to potentially cure his leukemia. Along with the cord blood, he also had radiation therapy with Louis Constine, M.D.

He had nothing but good things to say about the team that took care of him while he was hospitalized on Wilmot Cancer Centers sixth floor, the Blood and Marrow Transplant Unit.

It was exceptional. They were so friendly and accommodating right from the very beginning, he says. It wasnt limited to nurses. Theres medical technicians on the floor that were so friendly and became very good friends.

Scott Kesel (right) with Jason Mendler, M.D., at the 2019 Wilmot Warrior Walk

Thankfully, this time the transplant took. As of June 2022, Scott has been in remission for three-and-a-half years. He credits his team for getting him there.

Its an incredible group of people, he says.

But its not just his team hes grateful for. He appreciates that his life has returned basically back to normal, despite the tumultuous COVID pandemic that happened shortly after his transplant.

Hes gotten back to work and to hobbies he enjoys outside work.

I happen to be the worlds greatest tuba playing car salesman, he jokes.

This summer and fall, he has 28 gigs lined up, with different music groups around the region to keep him busy, and he looks forward to hunting and fishing during his free time.

For it all, he feels fortunate.

You have to be grateful for the outcome, he says. I got a lot of support remotely from people in my community who used the opportunity to promote bone marrow registration and blood drives, which was awful nice.

He adds, Im grateful that I ended up at Wilmot. I really couldnt have been in a better place.

Link:
'World's Greatest Tuba-Playing Car Salesman' Bounces Back after Leukemia, Thanks to Wilmot Team - URMC

Bone Marrow Stem Cells Comments Off on ‘World’s Greatest Tuba-Playing Car Salesman’ Bounces Back after Leukemia, Thanks to Wilmot Team – URMC | July 8th, 2022

The Global Rheumatoid Arthritis Stem Cell Therapy Market is replete with new growth opportunities and expansion avenues. There has been an increase in the use of products and services falling under the ambit of Rheumatoid Arthritis Stem Cell Therapy, giving a thrust to the growth of the global Rheumatoid Arthritis Stem Cell Therapy market. The unprecedented use of these products can be attributed to the increasing paying capacity of the masses.

Furthermore, in the absence of robust or utilitarian alternatives, the demand within the global Rheumatoid Arthritis Stem Cell Therapy market is projected to reach new heights of recognition. It is worthwhile to mention that the global Rheumatoid Arthritis Stem Cell Therapy market is treading along a lucrative pathway due to favorable government legislations.

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The COVID-19 pandemic has changed narratives related to growth and expansion across several key industries. Therefore, the Rheumatoid Arthritis Stem Cell Therapy market is also battling the cons of supply chain disruptions and procurement issues. Over the course of the next quarter, market players could be investing in new technologies to recover from the shocks of the pandemic.

The global market for rheumatoid arthritis stem cell therapy is highly fragmented. Examples of some of the key players operating in the global rheumatoid arthritis stem cell therapy market include Mesoblast Ltd., Roslin Cells, Regeneus Ltd, ReNeuron Group plc, International Stem Cell Corporation, TiGenix and others.

Through the latest research report on Rheumatoid Arthritis Stem Cell Therapy market, the readers get insights on:

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Tentatively, the global rheumatoid arthritis stem cell therapy market can be segmented on the basis of treatment type, application, end-user, and geography.

Based on treatment type, the global rheumatoid arthritis stem cell therapy market can be segmented into:

Based on application, the global rheumatoid arthritis stem cell therapy market can be segmented into:

Based on the distribution channel, the global rheumatoid arthritis stem cell therapy market can be segmented into:

Based on geography, the global rheumatoid arthritis stem cell therapy market can be segmented into:

The study further identifies major manufacturing trends, technologies that will be commercialized

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Growing Prevalence & Recurrence Of Rheumatoid Arthritis Is Expected To Growth Of The Rheumatoid Arthritis Stem Cell Therapy Market Designer Women...

Bone Marrow Stem Cells Comments Off on Growing Prevalence & Recurrence Of Rheumatoid Arthritis Is Expected To Growth Of The Rheumatoid Arthritis Stem Cell Therapy Market Designer Women… | July 8th, 2022