Next-Generation Stem Cells Transplanted in Human for the First Time
By Sykes24Tracey
Surgeons implanted retinal tissue created after reverting the patient's own cells to a "pluripotent" state
Researchers were able to grow sheets of retinal tissue from induced pluripotent stem cells, and have now implanted them for the first time in a patient. Credit: RIKEN/Foundation for Biomedical Research and Innovation
A Japanese woman in her 70s is the world's first recipient of cells derived from induced pluripotent stem cells, a technology that has created great expectations since it could offer the same advantages as embryo-derived cells but without some of the controversial aspects and safety concerns.
In a two-hour procedure starting at 14:20 local time today, a team of three eye specialists lead by Yasuo Kurimoto of the Kobe City Medical Center General Hospital, transplanted a 1.3 by 3.0 millimeter sheet of retinal pigment epithelium cells into an eye of the Hyogo prefecture resident, who suffers from age-related macular degeneration.
The procedure took place at the Institute of Biomedical Research and Innovation Hospital, next to the RIKEN Center for Developmental Biology (CDB) where ophthalmologist Masayo Takahashi had developed and tested the epithelium sheets. She derived them from the patient's skin cells, after producing induced pluripotent stem (iPS) cells and then getting them to differentiate into retinal cells.
Afterwards, the patient experienced no effusive bleeding or other serious problems, RIKEN has reported.
The patient took on all the risk that go with the treatment as well as the surgery, Kurimoto said in a statement released by RIKEN. I have deep respect for bravery she showed in resolving to go through with it.
He hit a somber note in thankingYoshiki Sasai, a CDB researcher who recenty committed suicide. This project could not have existed without the late Yoshiki Sasais research, which led the way to differentiating retinal tissue from stem cells.
Kurimoto also thanked Shinya Yamanaka, a stem-cell scientist at Kyoto University without whose discovery of iPS cells, this clinical research would not be possible. Yamanaka shared the 2012 Nobel Prize in Physiology or Medicine for that work.
Kurimoto performed the procedure a mere four days after a health-ministry committee gave Takahashi clearance for the human trials (see 'Next-generation stem cells cleared for human trial').
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Next-Generation Stem Cells Transplanted in Human for the First Time
Simple method turns human skin cells into immune-fighting white blood cells
By LizaAVILA
4 hours ago
(Phys.org) For the first time, scientists have turned human skin cells into transplantable white blood cells, soldiers of the immune system that fight infections and invaders. The work, done at the Salk Institute, could let researchers create therapies that introduce into the body new white blood cells capable of attacking diseased or cancerous cells or augmenting immune responses against other disorders.
The work, as detailed in the journal Stem Cells, shows that only a bit of creative manipulation is needed to turn skin cells into human white blood cells.
"The process is quick and safe in mice," says senior author Juan Carlos Izpisua Belmonte, holder of Salk's Roger Guillemin Chair. "It circumvents long-standing obstacles that have plagued the reprogramming of human cells for therapeutic and regenerative purposes."
Those problems includes the long timeat least two monthsand tedious laboratory work it takes to produce, characterize and differentiate induced pluripotent stem (iPS) cells, a method commonly used to grow new types of cells. Blood cells derived from iPS cells also have other obstacles: an inability to engraft into organs or bone marrow and a likelihood of developing tumors.
The new method takes just two weeks, does not produce tumors, and engrafts well.
"We tell skin cells to forget what they are and become what we tell them to bein this case, white blood cells," says one of the first authors and Salk researcher Ignacio Sancho-Martinez. "Only two biological molecules are needed to induce such cellular memory loss and to direct a new cell fate."
Belmonte's team developed the faster technique (called indirect lineage conversion) and previously demonstrated that these approaches could be used to produce human vascular cells, the ones that line blood vessels. Rather than reversing cells all the way back to a stem cell state before prompting them to turn into something else, such as in the case of iPS cells, the researchers "rewind" skin cells just enough to instruct them to form the more than 200 cell types that constitute the human body.
The technique demonstrated in this study uses a molecule called SOX2 to become somewhat plasticthe stage of losing their "memory" of being a specific cell type. Then, researchers use a genetic factor called miRNA125b that tells the cells that they are actually white blood cells.
The researchers are now conducting toxicology studies and cell transplantation proof-of-concept studies in advance of potential preclinical and clinical studies.
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Simple method turns human skin cells into immune-fighting white blood cells
Could stem cells from your hip repair your heart after an attack?
By daniellenierenberg
Father-of-two James Cross, 55, suffered a heart attack in February Surgeons at the London Chest Hospital offered him a unique chance Experimental therapy involved injecting stem cells from Mr Cross's hip into his heart in the hope they would encourage the organ to repair itself It appears to have worked as Mr Cross's heart muscle function has increased from 21% after the attack to 37% and it is still improving Experts hope the new technique will increase survival rates by a quarter
By John Naish
Published: 20:38 EST, 8 September 2014 | Updated: 07:12 EST, 9 September 2014
James Cross, 55,was offered experimental treatment after suffering a heart attack in February
After James Cross had a heart attack in February, he was given a unique chance for a new life.
Surgeons at the London Chest Hospital offered the 55-year-old experimental therapy that involved injecting his own stem cells into the damaged organ.
This was done in the hope that it would encourage his heart to repair itself.
The injected stem cells should prevent the hearts muscle tissue from becoming increasingly damaged after suffering a lack of oxygen during the heart attack.
And it seems to have worked.
After the heart attack, I had 21 per cent of my heart muscle functioning, as opposed to the normal 61 per cent, says James.
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Could stem cells from your hip repair your heart after an attack?
Aging Muscles May Be Restored by Discovery of a Key to Making Muscle
By Dr. Matthew Watson
Aging News & Information
Aging Muscles May Be Restored by Discovery of a Key to Making Muscle
Results hailed as important step toward developing new muscle to treat muscle diseases; good news for seniors with muscles wasting away from aging
Sept. 8, 2014 Promising results have been achieved in repairing damaged tissue in muscles which could lead to a new therapeutic approach to treating the millions of people suffering from muscle diseases, including those with muscular dystrophies and muscle wasting associated with cancer and aging seniors, according to the study, published September 7 in Nature Medicine.
Researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham) in La Jolla, California, have developed this novel technique to promote tissue repair in damaged muscles. The technique also creates a sustainable pool of muscle stem cells needed to support multiple rounds of muscle repair.
There are two important processes that need to happen to maintain skeletal-muscle health. First, when muscle is damaged by injury or degenerative disease such as muscular dystrophy, muscle stem cellsor satellite cellsneed to differentiate into mature muscle cells to repair injured muscles.
Second, the pool of satellite cells needs to be replenished so there is a supply to repair muscle in case of future injuries. In the case of muscular dystrophy, the chronic cycles of muscle regeneration and degeneration that involve satellite-cell activation exhaust the muscle stem-cell pool to the point of no return.
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Aging Muscles May Be Restored by Discovery of a Key to Making Muscle
Researchers discover key to making new muscles
By daniellenierenberg
Researchers at Sanford-Burnham Medical Research Institute (Sanford-Burnham) have developed a novel technique to promote tissue repair in damaged muscles. The technique also creates a sustainable pool of muscle stem cells needed to support multiple rounds of muscle repair. The study, published September 7 in Nature Medicine, provides promise for a new therapeutic approach to treating the millions of people suffering from muscle diseases, including those with muscular dystrophies and muscle wasting associated with cancer and aging.
There are two important processes that need to happen to maintain skeletal-muscle health. First, when muscle is damaged by injury or degenerative disease such as muscular dystrophy, muscle stem cells -- or satellite cells -- need to differentiate into mature muscle cells to repair injured muscles. Second, the pool of satellite cells needs to be replenished so there is a supply to repair muscle in case of future injuries. In the case of muscular dystrophy, the chronic cycles of muscle regeneration and degeneration that involve satellite-cell activation exhaust the muscle stem-cell pool to the point of no return.
"Our study found that by introducing an inhibitor of the STAT3 protein in repeated cycles, we could alternately replenish the pool of satellite cells and promote their differentiation into muscle fibers," said Alessandra Sacco, Ph.D., assistant professor in the Development, Aging, and Regeneration Program at Sanford-Burnham. "Our results are important because the process works in mice and in human muscle cells."
"Our next step is to see how long we can extend the cycling pattern, and test some of the STAT3 inhibitors currently in clinical trials for other indications such as cancer, as this could accelerate testing in humans," added Sacco.
"These findings are very encouraging. Currently, there is no cure to stop or reverse any form of muscle-wasting disorders -- only medication and therapy that can slow the process," said Vittorio Sartorelli, M.D., chief of the Laboratory of Muscle Stem Cells and Gene Regulation and deputy scientific director at the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS). "A treatment approach consisting of cyclic bursts of STAT3 inhibitors could potentially restore muscle mass and function in patients, and this would be a very significant breakthrough."
Revealing the mechanism of STAT3
STAT3 (signal transducer and activator of transcription 3) is a protein that activates the transcription of genes in response to IL-6, a signaling protein released by cells in response to injury and inflammation. Prior to the study, scientists knew that STAT3 played a complex role in skeletal muscle, promoting tissue repair in some instances and hindering it in others. But the precise mechanism of how STAT3 worked was a mystery.
The research team first used normally aged mice and mice models of a form of muscular dystrophy that resembles the human disease to see what would happen if they were given a drug to inhibit STAT3. They found that the inhibitor initially promoted satellite-cell replication, followed by differentiation of the satellite cells into muscle fibers. When they injected the STAT3 inhibitor every seven days for 28 days, they found an overall improvement in skeletal-muscle repair, and an increase in the size of muscle fibers.
"We were pleased to find that we achieved similar results when we performed the experiments in human muscle cells," said Sacco. "We have discovered that by timing the inhibition of STAT3 -- like an "on/off" light switch -- we can transiently expand the satellite-cell population followed by their differentiation into mature muscle cells."
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Researchers discover key to making new muscles
New Study Shows Simple Conversion of Skin Cells Into White Blood-Like Cells
By daniellenierenberg
Durham, NC (PRWEB) September 05, 2014
A study published in STEM CELLS on August 30, 2014, details a new, simple, and highly efficient way to convert cells taken from an adults skin into stem cells that have the potential to differentiate into white blood cells.
Stem cells are the keystone of regenerative medicine due to their ability to be coaxed into becoming nearly any cell in the body. Induced pluripotent stem cells (iPSCs) are of particular interest because they can be generated directly from adult cells and thus many of the controversies associated with embryonic stem cells are avoided.
However, a major problem with iPSCs is their propensity to differentiate into immature cells. This is particularly true of hematopoietic (blood) cells, and the ability to generate long-term, re-populating hematopoietic stem cells has long eluded researchers.
In terms of potential clinical applications, the hematopoietic system represents one of the most suitable tissues for stem cell-based therapies as it can be relatively easily reconstituted upon bone marrow or umbilical cord blood cell transplantation. However, and even though much effort has focused on the derivation of hematopoietic cells from iPSCs, their grafting and differentiation potential remains limited, said Juan Carlos Izpisua Belmonte, Ph.D., of the Salk Institute for Biological Studies, La Jolla, Calif.
He and his colleagues at the Salk Institute, the Center of Regenerative Medicine in Barcelona, and the Centre for Biomedical Network Research on Rare Diseases (CIBERER), Madrid, decided to tackle this problem using a gene called Sox2 and a gene-regulating molecule called miRNA 125b. The Sox2 gene was used as a primer to coax human fibroblasts (the most common cells of connective tissue in animals) into differentiating into CD34+ cells, which are primitive blood- and bone marrow-derived progenitor cells. The miRNA 125b was then added to facilitate the differentiation of these CD34+ stem cells into more mature, hematopoietic-like stem cells.
To our knowledge this is the first time human skin cells have been converted into white blood-like cells with reconstitution and migratory potential, able to further mature in vivo and, more importantly, to graft into distant hematopoietic sites Dr. Belmonte said. Our results indicate this strategy could help circumvent obstacles to reprogramming human cells into blood cells that have clinical potential.
Jan Nolta,Ph.D., Editor-in-Chief of STEM CELLS, said, we are proud to feature this interesting work that shows that miRNA 125b facilitates the differentiation of fibroblast-derived progenitors into more mature, hematopoietic-like stem cells. This is exciting for future research into the blood-forming system. ###
The full article, Conversion of Human Fibroblasts into Monocyte-Like Progenitor Cells, can be accessed at http://onlinelibrary.wiley.com/doi/10.1002/stem.1800/abstract.
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New Study Shows Simple Conversion of Skin Cells Into White Blood-Like Cells
Stem Cells Star in Marriage of Art and Science
By Dr. Matthew Watson
By Daniella Walsh on September 04th, 2014
By Daniella Walsh | LB Indy
Leslies stem cell
Janet Dreyer earned a doctorate in molecular biology, but in her 50s enrolled at the Pasadena College of Art and Design and became hooked on art. After a hiatus from both science and art for travel, shes back to art, creating a work that combines her training in both fields, The Stem Cell Scientist.
Dreyers computer generated work came to life at the request of Laguna Beach glass and multi-media artist Leslie Davis, who organized The Art of Stem Cells. The show features conceptual works by 29 artists. Their themes address debilitating diseases and injuries and the work of scientists trying to find cures. The month-long exhibition opens Saturday, Sept. 6, at the Orange County Center for Contemporary Art in Santa Ana.
Dreyer delved into history when she built a mosaic for the show. The work includes references to the regenerating powers of the Egyptian scarab god Khepri, showing him rolling a cell instead of the sun, among other images. I chose the mosaic format because the tiles create a sense of motion reminding me of developing cells, Dreyer said.
The exhibitions opening and closing receptions will not only showcase what results when artists interact with 23 scientists, but also introduce art patrons to researchers and examples of their state-of-the art stem cell pursuits. Half of all proceeds will benefit research at the center, led for the past eight years by Dr. Peter Donovan, to whom the show is dedicated.
With a keen interest in science and particularly stem cell therapy, Davis has forged a connection to UC Irvines Sue & Bill Gross Stem Cell Research Center. But since 2005, Davis twin interests have yielded three other medical related art exhibitions, including one for Mission Hospital.
It was her brainpower that led to pairing center researchers with artists selected on the strength and nature of their work.
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Stem Cells Star in Marriage of Art and Science
Stem Cell Beauty: The Online Shop Revolutionizing the Beauty Industry
By raymumme
Los Angeles, California (PRWEB) September 03, 2014
Stem Cell technology is the future; looking younger and better without plastic surgery is here now. Stem Cell Beautys debut product line StemLife is spearheading the current beauty renaissance. Among websites that provide stem cell beauty products, Stem Cell Beauty is in a league of its own.
Science is always advancing, why shouldn't your beauty products? questions Albert Faleski, Director of Operations at StemCellBeauty.com.
Most products on the shelves are outdated, whereas we take a different approach to find a formula that works with your body, reinvigorating your own stem cells to provide actual results.
The science behind StemLife is nothing short of groundbreaking. Its trademarked FixT Technology was achieved through reverse engineering to understand how the body maintains and heals itself with our own endogenous combinations of adult stem cells. With this knowledge they developed a means to mimic the natural stem cell processes in our body. Unlike other beauty brands, StemLife uses specific combinations of stem cell types, each cultured under specific state-dependent conditions, using cell types and states that are ideal for the particular tissue. It then creates a set of molecules from multiple stem cell types that is complete and fully formed, rendering maximum benefit and efficiency. This approach of stem cell skin care is extremely unique.
Other leading stem cell-based beauty companies use simpler technology where one stem cell type is chosen to make their molecules. This one-size fits all approach is not efficient and lacks the complexity of StemLifes FixT technology. Some companies mash the cells without allowing their molecules to fully process, which again leads to underachieving results. Many of the largest companies have made no attempt to use new science to formulate better products, providing their customers with over-priced serums proven to be archaic.
StemLifes cutting edge formula is shaping the future of hair regrowth as well, providing an ultramodern solution to those looking to slow the hands of time. Their most popular product, The Advanced Hair Treatment for Women, is essentially the hidden gem the world has been waiting for.
Its popularity stems back to the fact that it actually works. Faleski explained.
Were not big on gimmicks. We prefer showing our customer actual people who have had actual results with our products. After seeing life-changing hair growth with their own eyes, we are confident new customers will try it and have amazing results of their own. The Advanced Hair Treatment for Women is an incredible product that sells itself.
StemLifes most interesting product to date is the Natural Lash & Brow Lash Extend. This product boasts ingredients that are formulated to generate eyelash growth. In a market where eyelash extensions have been the go-to fix for longer lashes, being able to naturally grow them is a revolutionary concept.
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Stem Cell Beauty: The Online Shop Revolutionizing the Beauty Industry
Research making ALS less of a mystery
By JoanneRUSSELL25
Ed Tessaro, 68, just joined the ALS Ice Bucket Challenge, the social media fundraising phenomenon that has brought in over $100 million in donations to fight ALS, or Lou Gehrig's disease.
Ed Tessaro has been fighting the disease for more than five years.
But Tessaro's challenge is different than most. Tessaro has been fighting the disease for more than five years.
"My arms and legs are weaker, when I walk I'm pretty much at risk," Tessaro told CBS News. "That's really the only bad news. I'm breathing at 100 percent of normal, which is great news."
In ALS, motor neurons, the nerve cells that control voluntary muscles, detach from the muscle and die. Patients lose control of movement and eventually their ability to breathe on their own. The cause of ALS is unknown.
Tessaro is one of 30 patients in a clinical trial who had stem cells injected into their spinal column in an attempt to slow the progression of the disease.
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What's the Ice Bucket Challenge all about? A "60 Minutes" story about the fortitude of many ALS patients shows why they need more research fundin...
Normally, neurons are surrounded by cells that protect and nourish them. New research suggests that in ALS patients, these supporting cells become killers, poisoning the motor neurons. Animal studies have found stem cells can help heal the toxic supporting cells.
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Research making ALS less of a mystery
A new term for teachers sparks interest in tooth stem cell banking — Source:BioEden
By raymumme
(PRWEB UK) 2 September 2014
Schools in the UK are preparing to become actively involved in helping to educate parents and children on the health benefits of stem cell banking.
BioEden the specialist tooth stem cell bank are producing educational materials for schools which includes a delightfully illustrated book Nothing but the Tooth which is available from today.
The book although a fun fictional piece starring a 21st Century Super Tooth Fairy and a small boy called Nigel, is based on fact and educates both children and adults alike on stem cell banking from teeth. The book follows Nigel as he visits the BioEden stem cell laboratory and brings home to the reader why stem cell banking today is a simple yet invaluable way of storing good health for the future.
It is now known that naturally shed milk teeth in young children contain a vital source of mesenchymal stem cells. These cells have the ability to morph into other types of cells and can create cartilage, tissue, skin and bone.
As the teeth fall out naturally, the process of harvesting cells is non-invasive and many parents choose this method for this very reason. Stem cell banking from teeth is also the least expensive form of banking and parents can now pay a low monthly fee, instead of a single sum.
As there is no telling exactly when a tooth will fall, despite the tell-tale wobble, a spare tooth collection capsule is provided for the school so that if the tooth falls out in the classroom or playground, the tooth can be safely collected and stored without delay.
The BioEden process is so simple that the teacher is merely required to place the tooth into the capsule with some fresh cows milk, place in a refrigerator, and then notify the parent or guardian.
BioEden have been invited into schools from late September and will be supported by TV Celebrity Cook Sally Bee, whose own children have their stem cells stored with the bank. Sally has a rare heart condition, and it was her personal experience that led her to bank her childrens stem cells.
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A new term for teachers sparks interest in tooth stem cell banking -- Source:BioEden
How the zebrafish gets its stripes: Uncovering how beautiful color patterns can develop in animals
By JoanneRUSSELL25
The zebrafish, a small fresh water fish, owes its name to a striking pattern of blue stripes alternating with golden stripes. Three major pigment cell types, black cells, reflective silvery cells, and yellow cells emerge during growth in the skin of the tiny juvenile fish and arrange as a multilayered mosaic to compose the characteristic colour pattern. While it was known that all three cell types have to interact to form proper stripes, the embryonic origin of the pigment cells that develop the stripes of the adult fish has remained a mystery up to now. Scientists of the Max Planck Institute for Developmental Biology in Tbingen have now discovered how these cells arise and behave to form the 'zebra' pattern. Their work may help to understand the development and evolution of the great diversity of striking patterns in the animal world.
Beauty in the living world amazes poets, philosophers and scientists alike. Nobel prize laureate Christiane Nsslein-Volhard, Director of the Department for Genetics at the Max Planck Institute for Developmental Biology, has long been fascinated by the biology behind the colour patterns displayed by animals. Her group uses zebrafish as a model organism to study the genetic basis of animal development.
New research by Nsslein-Volhard's laboratory published in Science shows that the yellow cells undergo dramatic changes in cell shape to tint the stripe pattern of zebrafish. "We were surprised to observe such cell behaviours, as these were totally unexpected from what we knew about colour pattern formation," says Prateek Mahalwar, first author of the study. The study builds on a previous work from the laboratory, which was published in June this year in Nature Cell Biology (NCB), tracing the cell behaviour of silvery and black cells. Both studies describe diligent experiments to uncover the cellular events during stripe pattern formation. Individual juvenile fish carrying fluorescently labelled pigment cell precursors were imaged every day for up to three weeks to chart out the cellular behaviours. This enabled the scientists to trace the multiplication, migration and spreading of individual cells and their progeny over the entire patterning process of stripe formation in the living and growing animal. "We had to develop a very gentle procedure to be able to observe individual fish repeatedly over long periods of time. So we used a state of the art microscope which allowed us to reduce the adverse effects of fluorescence illumination to a minimum," says Ajeet Singh, first author of the earlier NCB study.
Surprisingly, the analysis revealed that the three cell types reach the skin by completely different routes: A pluripotent cell population situated at the dorsal side of the embryo gives rise to larval yellow cells, which cover the skin of the embryo. These cells begin to multiply at the onset of metamorphosis when the fish is about two to three weeks old. However, the black and silvery cells come from a small set of stem cells associated with nerve nodes located close to the spinal cord in each segment. The black cells reach the skin migrating along the segmental nerves to appear in the stripe region, whereas the silvery cells pass through the longitudinal cleft that separates the musculature and then multiply and spread in the skin.
Brigitte Walderich, a co-author of the Science paper, who performed cell transplantations to trace the origin of yellow cells, explains: "My attempt was to create small clusters of fluorescently labelled cells in the embryo which could be followed during larval and juvenile stages to unravel growth and behaviour of the yellow cells. We were surprised to discover that they divide and multiply as differentiated cells to cover the skin of the fish before the silvery and black cells arrive to form the stripes."
A striking observation is that both the silvery and yellow cells are able to switch cell shape and colour, depending on their location. The yellow cells compact to closely cover the dense silvery cells forming the light stripe, colouring it golden, and acquire a loose stellate shape over the black cells of the stripes. The silvery cells thinly spread over the stripe region, giving it a blue tint. They switch shape again at a distance into the dense form to aggregate, forming a new light stripe. These cell behaviours create a series of alternating light and dark stripes. The precise superposition of the dense form of silvery and yellow cells in the light stripe, and the loose silvery and yellow cells superimposed over the black cells in the stripe cause the striking contrast between the golden and blue coloration of the pattern.
The authors speculate that variations on these cell behaviours could be at play in generating the great diversity of colour patterns in fish. "These findings inform our way of thinking about colour pattern formation in other fish, but also in animals which are not accessible to direct observation during development such as peacocks, tigers and zebras," says Nsslein-Volhard -- wondering how her cats got their stripes.
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The above story is based on materials provided by Max-Planck-Gesellschaft. Note: Materials may be edited for content and length.
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How the zebrafish gets its stripes: Uncovering how beautiful color patterns can develop in animals
How zebrafish forms its stripes revealed
By Sykes24Tracey
A new research has revealed that three major pigment cell types i.e. black cells, reflective silvery cells, and yellow cells helped in forming the stripes on zebrafish.
The research conducted by Max Planck Institute for Developmental Biology in Tubingen showed that the yellow cells undergo dramatic changes in cell shape to tint the stripe pattern of zebrafish.
First author Prateek Mahalwar said that they were surprised to observe such cell behaviours, which were totally unexpected color pattern formation.
The study revealed that the three cell types reached the skin by completely different routes. A pluripotent cell population situated at the dorsal side of the embryo gave rise to larval yellow cells, which covered the skin of the embryo and began to multiply at the onset of metamorphosis when the fish was about two to three weeks old.
However, the black and silvery cells came from a small set of stem cells, which is associated with nerve nodes located close to the spinal cord in each segment.
Brigitte Walderich, a co-author of the Science paper, explained that they were surprised to discover that the small clusters of fluorescently labelled cells in the embryo, which could be followed during larval and juvenile stages to unravel growth and behaviour of the yellow cells, divided and multiplied as differentiated cells to cover the skin of the fish before the silvery and black cells arrive to form the stripes.
The study is published in journal Science.
(Posted on 29-08-2014)
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How zebrafish forms its stripes revealed
International Stem Cell Corporation to Present at Two Upcoming Investment Conferences
By Sykes24Tracey
CARLSBAD, CA--(Marketwired - August 28, 2014) - International Stem Cell Corporation (OTCQB: ISCO) (www.internationalstemcell.com), a California-based biotechnology company developing novel stem cell based therapies and biomedical products, today announced that Executive Vice President Dr. Simon Craw will present a corporate overview of ISCO and its subsidiaries at two upcoming investment conferences.
Rodman and Renshaw 16th Annual Global Investment Conference:
Date:Wednesday, September 10, 2014 Time:11:40 a.m. ET Location:New York Palace Hotel, New York, NY Room:Kennedy I
Conference details:http://www.meetmax.com//sched/event_23003/~public/conference_home.html?event_id=23003
AEGIS CAPITAL Corp. 2014 Healthcare and Technology Conference:Date:Thursday, September 11, 2014 Time:10:45 a.m. PT Location:The Encore at Wynn, Las Vegas, NV
Conference details:http://www.meetmax.com/sched/event_25932/~public/conference_home.html?event_id=25932
Please contact the conference organizers if you have an interest in attending the conference or if you would like to arrange a meeting with International Stem Cell Corporation's management team.
About International Stem Cell Corporation
International Stem Cell Corporation is focused on the therapeutic applications of human parthenogenetic stem cells (hpSCs) and the development and commercialization of cell-based research and cosmetic products. ISCO's core technology, parthenogenesis, results in the creation of pluripotent human stem cells from unfertilized oocytes (eggs) hence avoiding ethical issues associated with the use or destruction of viable human embryos. ISCO scientists have created the first parthenogenetic, homozygous stem cell line that can be a source of therapeutic cells for hundreds of millions of individuals of differing genders, ages and racial background with minimal immune rejection after transplantation. hpSCs offer the potential to create the first true stem cell bank, UniStemCell. ISCO also produces and markets specialized cells and growth media for therapeutic research worldwide through its subsidiary Lifeline Cell Technology (www.lifelinecelltech.com), and stem cell-based skin care products through its subsidiary Lifeline Skin Care (www.lifelineskincare.com). More information is available atwww.internationalstemcell.com.
To receive ongoing corporate communications via email, visit: http://www.b2i.us/irpass.asp?BzID=1468&to=ea&s=0.
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International Stem Cell Corporation to Present at Two Upcoming Investment Conferences
Catholics warned about ice bucket challenge
By NEVAGiles23
MANILA The head of the Catholic Bishops' Conference of the Philippines has a reminder to those taking the ice bucket challenge, which supports research efforts of the Amyotrophic Lateral Sclerosis Association (ALSA).
CBCP president Lingayen-Dagupan Archbishop Socrates Villegas said research on ALS involves the use of stem cells.
''ALS is a degenerative disorder and stem-cells apparently hold out the promise of reversing the death and degeneration of brain cells, in particular,'' Villegas said in a statement.
''Stem cells however are most readily harvested from embryos, and it is in this regard that this type of research is ethically problematic."
Citing the ''Instruction on Respect for Human Life in Its Origin and on the Dignity of Procreation,'' Villegas noted that ''human embryos obtained in vitro are human beings and subjects with rights."
ALS is a progressive neurodegenerative disease that attacks nerve cells and pathways in the brain and spinal cord, which eventually leads to paralysis.
Villegas said the ALS Association said in a statement that ''most stem-cell research in ALS is currently focused on iPS (induced pluripotent stem) cells, which are not burdened with ethical issues."
''We are told that iPS cells are 'induced pluripotent stem cells', stem cells created from skin cells. Such cells would indeed be pluripotent, but would not be embryonic cells,'' the CBCP chief said.
''As such, the ethical objection to the use of embryonic cells, whether harvested from embryos, or obtained through in vitro fertilization, would not arise."
The prelate, however, noted that the ALS Association also admitted that ''iPS cells are used in 'most stem-cell research.'''
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Catholics warned about ice bucket challenge
Could Reprogrammed Cells Fight 'Untreatable' Diseases?
By JoanneRUSSELL25
By Ciara Curtin
Jeanne Loring and her Scripps Research Institute colleagues transplanted a set of cells into the spinal cords of mice that had lost use of their hind limbs to multiple sclerosis. As the experimentalists expected, within a week, the mice rejected the cells. But after another week, the mice began to walk.
We thought that they wouldnt do anything, says Loring, who directs theCenter for Regenerative Medicineat Scripps. But as her lab has since shown numerous times, and published in Stem Cell Reports, something that these particular so-called neural precursor cells dobeforethe immune system kicks them out seems to make the mouse better.
The cells Lorings team used are derived from induced pluripotent stem cells, which are mature cells, such as skin cells, that have been coaxed with a combination of chemicals to return to an earlier stage of development.
Induced pluripotent cells, also known as iPS cells, pose a number of opportunities for medicine. For instance, Loring is using iPS cells from Parkinsons disease and multiple sclerosis patients to reconstitute cell types that may be damaged in people with those conditions. She is also using them to test how certain drugs or treatments may affect damaged cells in people with conditions such as autism spectrum disorders.
Loring (front row, center) with the Loring Lab Group at the Center for Regenerative Medicine
Loring says no viable long-term treatments exist for the diseases her team has been working on, including Alzheimers disease, Parkinsons disease, and multiple sclerosis, Thats where the need is, she says.
The neural precursor cells that Loring has been using in the mice with MS are young cells that havent quite gotten to the point of being nerves yet. Only certain types of these cells have such a dramatic Lazarus-like effect on the affected mice, but Lorings team can readily identify them based on DNA analysis.
Even so, theyre not yet ready to treat human MS patients with the approach, she says. First, the researchers want to identify what the cells producea protein, perhaps, or a set of proteinsthat allows the mice to walk.
For other diseases, however, researchers are closer to being ready to transplant working versions of reprogrammed cells into sick people.
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Could Reprogrammed Cells Fight 'Untreatable' Diseases?
Pfizer buys into Cambridge life science innovation
By JoanneRUSSELL25
Stem cell technology pioneer,DefiniGEN Ltdhas joined the Pfizer-inspired European Bank for induced pluripotent stem cells (EBiSC) consortium.
The consortium comprises 26 partners, and has been newly-formed with support from the Innovative Medicines Initiative (IMI) and the European Federation of Pharmaceutical Industries and Associations (EFPIA).
DefiniGen, a Cambridge University spin-out that has raised millions, represents one of the first commercial opportunities to arise from the universitys expertise in stem cells and is based on the research of Dr Ludovic Vallier, Dr Tamir Rashid and Professor Roger Pedersen of the universitys Anne McLaren Laboratory of Regenerative Medicine.
The EBiSC iPS cell bank will act as a central storage and distribution facility for human iPS cells, to be used by researchers across academia and industry in the study of disease and the development of new therapeutics. DefiniGENs role will be to validate EBiSC iPS cell lines by generating liver hepatocyte cells for toxicology, disease modelling, and regenerative medicine applications.
Dr Marcus Yeo, CEO of DefiniGEN, said: We are delighted to be a part of this ground-breaking consortium which will provide a crucial platform resource to enable the realisation of the full potential of iPS technology.
Conceptualised and coordinated by Pfizer Ltd in Cambridge, UK and managed by Roslin Cells Ltd in Edinburgh, the EBiSC bank aims to become the European go to resource for high quality research grade human iPS cells.
Today, iPS cells are being created in an increasing number of research programmes underway in Europe, but are not being systematically catalogued and distributed at the necessary scale to keep pace with their generation, nor to meet future demand.
The 35 million project will support the initial build of a robust, reliable supply chain from the generation of customised cell lines, the specification to internationally accepted quality criteria and their distribution to any global qualified user, ensuring accessibility to consistent, high quality tools for new medicines development.
Ruth McKernan, CSO of Pfizers Neusentis research unit in Cambridge, said: We are excited to be a part of this precompetitive collaboration to build a sustainable repository of high quality human iPS cell lines.
For many areas of research in academia and in industry, understanding the biological basis of disease heterogeneity is the next horizon. A bank of well-characterised iPS lines with strong relevance to the entire research community will help us all in our mission to bring therapies to patients.
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Pfizer buys into Cambridge life science innovation
Stem Cell Research Scandal: Japan Lab Could Not Confirm Results Of Controversial Experiment
By daniellenierenberg
Scientists who hoped to replicate the results of potentially groundbreaking stem-cell research have been unsuccessful to date, researchers at the Riken Center for Developmental Biology in Kobe, Japan, said Wednesday, according to the Associated Press. Detailed in two papers published in the journal Nature in January, the research was initially heralded as a breakthrough in the field of stem-cell biology, but was later met with skepticism after other institutions attempts to mirror its results failed. The authors of the papers and Nature retracted them in June.
Now, the center behind the papers says its recent efforts to confirm certain aspects of the research have failed. Researchers have conducted 22 experiments thus far, but we could not confirm the emergence of cells in the conditions described in [lead researcher Haruko Obokatas] papers, Riken said in a statement cited by Agence France-Presse. The center anticipates it will continue trying to confirm certain aspects of the research until next March, AP said.
The two papers published in Nature described a simple process for producing stem cells using an acid-based solution. Researchers said they successfully created pluripotent embryonic stem cells -- cells that can be grown into any kind of cell, including human organ tissue -- from mature skin cells. However, it was later revealed that researchers had misrepresented some of their data.
The controversy surrounding the research team who published the papers took an unexpected turn this month when one of the papers authors, Yoshiki Sasai, committed suicide at the Riken institute.
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Stem Cell Research Scandal: Japan Lab Could Not Confirm Results Of Controversial Experiment
Stem cell treatment helps arthritic dogs
By raymumme
Stem cells heal pooches in pain MIKE MATHER
NICK REED/Fairfax NZ
HAPPY HOUND: Shiloh with owner Adele Holland. She is a different dog since having stem cell injections to relieve arthritis pain, Holland says.
Three years ago australian shepherd dog Shiloh was diagnosed with a severe case of degenerative arthritis that left her limping slowly towards her deathbed.
As time went on, and to the dismay of her Horotiu family, Shiloh became increasingly stiff, was soon no longer able to jump, could barely walk without pain, and eventually had to be carried outside to the toilet.
But, remarkably, the 10-year-old pet is not only still alive today, she is walking and jumping without a trace of pain.
It's a physical improvement her owner Adele Holland describes as "nothing short of a miracle".
Shiloh's recovery is something dozens of arthritic Waikato dogs have now experienced after stem cell injections, a treatment technique adopted by Hamilton veterinarian practice CareVets.
Veterinarian Ivan Aleksic said Shiloh was the first dog to receive stem cells. His practice had successfully repeated the $2600 treatment on more than 40 dogs with arthritis. He described stem cells as "the body's own repair cells".
"They have the ability to divide and differentiate into many different types of cells based on where they are needed throughout the body. They can divide and turn into tissues such as skin, fat, muscle, bone, cartilage and nerve to name a few.
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Stem cell treatment helps arthritic dogs
Best Stem Cell Skin Care Beauty Creams and Serums
By NEVAGiles23
5-4-3-2-1 Product Countdown
Stem Cell Skin Care Reviews presents expert & user reviews and analysis of the best (& worst) products in leading edge anti-aging skin care science. Here are the 5 top ranked products as rated by expert reviewers, who are dermatologists, biologists, estheticians, physicians, and product formulators. Click on a stem cell skin care product name or image to view detailed information, or visitthe all reviewssection to examine a larger selection of stem cell skin care products and to search by name, category, or key word.
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The editors and reviewers here are all science nerds and our passionate pursuit of the best stem cell skin creams on the planet separates us fromneurotypicals andputs us somewhere on the spectrum. That being said, we think this whole subject is critically important to survival of the home sapiens species. Especially to skin care aficionados (many of whom also qualify for nerddom). So our desire here is to find a way to communicate all this arcane knowledge into human-usable information. We might not get it right the first time around, so feel free to ask questions or just say say what??? whenever we obfuscate. We have gathered together a knowledge base which we hope will be helpful.
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Best Stem Cell Skin Care Beauty Creams and Serums
Biologists Reprogram Skin Cells to Mimic Rare Disease
By raymumme
Released: 19-Aug-2014 11:30 AM EDT Embargo expired: 21-Aug-2014 12:00 PM EDT Source Newsroom: Johns Hopkins Medicine Contact Information
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Newswise Johns Hopkins stem cell biologists have found a way to reprogram a patients skin cells into cells that mimic and display many biological features of a rare genetic disorder called familial dysautonomia. The process requires growing the skin cells in a bath of proteins and chemical additives while turning on a gene to produce neural crest cells, which give rise to several adult cell types. The researchers say their work substantially expedites the creation of neural crest cells from any patient with a neural crest-related disorder, a tool that lets physicians and scientists study each patients disorder at the cellular level.
Previously, the same research team produced customized neural crest cells by first reprogramming patient skin cells into induced pluripotent stem (iPS) cells, which are similar to embryonic stem cells in their ability to become any of a broad array of cell types.
Now we can circumvent the iPS cells step, saving seven to nine months of time and labor and producing neural crest cells that are more similar to the familial dysautonomia patients cells, says Gabsang Lee, Ph.D., an assistant professor of neurology at the Institute for Cell Engineering and the studys senior author. A summary of the study will be published online in the journal Cell Stem Cell on Aug. 21.
Neural crest cells appear early in human and other animal prenatal development, and they give rise to many important structures, including most of the nervous system (apart from the brain and spinal cord), the bones of the skull and jaws, and pigment-producing skin cells. Dysfunctional neural crest cells cause familial dysautonomia, which is incurable and can affect nerves ability to regulate emotions, blood pressure and bowel movements. Less than 500 patients worldwide suffer from familial dysautonomia, but dysfunctional neural crest cells can cause other disorders, such as facial malformations and an inability to feel pain.
The challenge for scientists has been the fact that by the time a person is born, very few neural crest cells remain, making it hard to study how they cause the various disorders.
To make patient-specific neural crest cells, the team began with laboratory-grown skin cells that had been genetically modified to respond to the presence of the chemical doxycycline by glowing green and turning on the gene Sox10, which guides cells toward maturation as a neural crest cell.
Testing various combinations of molecular signals and watching for telltale green cells, the team found a regimen that turned 2 percent of the cells green. That combination involved turning on Sox10 while growing the cells on a layer of two different proteins and giving them three chemical additives to rewind their genetic memory and stimulate a protein network important for development.
Analyzing the green cells at the single cell level, the researchers found that they showed gene activity similar to that of other neural crest cells. Moreover, they discovered that 40 percent were quad-potent, or able to become the four cell types typically derived from neural crest cells, while 35 percent were tri-potent and could become three of the four. The cells also migrated to the appropriate locations in chick embryos when implanted early in development.
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Biologists Reprogram Skin Cells to Mimic Rare Disease