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A mouse embryo made with reprogrammed cells (Image: Haruko Obokata)

A LITTLE stress is all it took to make new life from old. Adult cells have been given the potential to turn into any type of body tissue just by tweaking their environment. This simple change alone promises to revolutionise stem cell medicine.

Yet New Scientist has also learned that this technique may have already been used to make a clone. "The implication is that you can very easily, from a drop of blood and simple techniques, create a perfect identical twin," says Charles Vacanti at Harvard Medical School, co-leader of the team involved.

Details were still emerging as New Scientist went to press, but the principles of the new technique were outlined in mice in work published this week. The implications are huge, and have far-reaching applications in regenerative medicine, cancer treatment and human cloning.

In the first few days after conception, an embryo consists of a bundle of cells that are pluripotent, which means they can develop into all cell types in the body. These embryonic stem cells have great potential for replacing tissue that is damaged or diseased but, as their use involves destroying an embryo, they have sparked much controversy.

To avoid this, in 2006 Shinya Yamanaka at Kyoto University, Japan, and colleagues worked out how to reprogram adult human cells into what they called induced pluripotent stem cells (iPSCs). They did this by introducing four genes that are normally found in pluripotent cells, using a harmless virus.

The breakthrough was hailed as a milestone of regenerative medicine the ability to produce any cell type without destroying a human embryo. It won Yamanaka and his colleague John Gurdon at the University of Cambridge a Nobel prize in 2012. But turning these stem cells into therapies has been slow because there is a risk that the new genes can switch on others that cause cancer.

Now, Vacanti, along with Haruko Obokata at the Riken Center for Developmental Biology in Kobe, Japan, and colleagues have discovered a different way to rewind adult cells without touching the DNA. The method is striking for its simplicity: all you need to do is place the cells in a stressful situation, such as an acidic environment.

The idea that this might work comes from a phenomenon seen in the plant kingdom, whereby drastic environmental stress can change an ordinary cell into an immature one from which a whole new plant can arise. For example, the presence of a specific hormone has been shown to transform a single adult carrot cell into a new plant. Some adult cells in reptiles and birds are also known to have the ability to do this.

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Stem cell power unleashed after 30 minute dip in acid

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A new study published in the journal Cell Stem Cell, describes how scientists have developed a way of producing highly sought populations of a pure tissue-specific cell from human pluripotent stem cells.

Human pluripotent stem cells (hPSCs) are precursor cells than can produce over 200 distinct cell types in the human body. They hold great promise for regenerative medicine and drug screening. The idea is to be able to generate a range of pure tissue types by manipulating these precursor cells.

However, it is proving very challenging to obtain large numbers of pure, untainted, tissue-specific cells from hPSCs. Part of the problem is how to ensure they receive highly specific signals, that do not coax them down paths that lead to a range of other tissue types.

Now, a team led by the Genome Institute of Singapore (GIS) in the Agency for Science, Technology and Research (A*STAR) has developed a new way of coaxing hPSCs to produce highly pure populations of endoderm, a valuable cell type that gives rise to organs like the liver and pancreas, bringing closer the day when stem cells can be used in clinical settings.

One of the study leaders is Dr. Bing Lim, senior group leader and associate director of Cancer Stem Cell Biology at the GIS. He and his colleagues developed a highly systematic and novel screening method.

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Scientists make pure precursor liver and pancreas cells from stem cells

2 hours ago

Haruko Obokata / Nature

Japanese researchers have created a new type of stem cell just by pressuring normal cells in the body. This image shows a mouse embryo created using these cells, which are genetically engineered to glow green.

Scientists have made a whole new type of stem cell using little more than a little acid, and they say it may represent a way to skip all the complex and controversial steps that it now takes to make cells to regenerate tissues and organs.

The team in Japan includes some of the foremost experts in making what are called pluripotent stem cells master cells that have the power to morph into any type of cells, from blood to bone to muscle. These master cells look and act like an embryo right after conception and, like a days-old embryo, have the power to generate new tissue of any type.

Making these powerful cells usually requires the use of embryos something many disapprove of or tricky mixtures of genes to turn back the clock.

While theres not an immediate use for the discovery, it could add to the arsenal of tools that scientists can use in trying to find ways to repair the human body, the team reports in this weeks issue of the journal Nature.

It is also exciting to think about the new possibilities this finding offers, not only in areas like regenerative medicine but also perhaps in the study of senescence and cancer as well, Haruko Obokata of the RIKEN Center for Developmental Biology in Kobe, Japan, told reporters in a conference call.

Obokatas team worked with mice, and found they could get ordinary cells from baby mice to turn into pluripotent stem cells by bathing them in a slightly acidic solution. They call them stimulus-triggered acquisition of pluripotency, or STAP, cells.

Other stem cells experts praised the work. These breakthroughs are so impressive and potentially powerful truly another dramatic game-changer, said Dr. Gerald Schatten, a stem cell and genetic engineering expert at the University of Pittsburgh.

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Scientists make a new type of stem cell, using a little acid

January 29, 2014 - 17:55 AMT

PanARMENIAN.Net - Stem cell researchers are heralding a "major scientific discovery", with the potential to start a new age of personalized medicine, BBC News reports.

Scientists in Japan showed stem cells can now be made quickly just by dipping blood cells into acid.

Stem cells can transform into any tissue and are already being trialled for healing the eye, heart and brain.

The latest development, published in the journal Nature, could make the technology cheaper, faster and safer, according to the BBC.

The human body is built of cells with a specific role - nerve cells, liver cells, muscle cells - and that role is fixed. However, stem cells can become any other type of cell, and they have become a major field of research in medicine for their potential to regenerate the body.

Embryos are one, ethically charged, source of stem cells. Nobel prize winning research also showed that skin cells could be "genetically reprogrammed" to become stem cells (termed induced pluripotent stem cells).

Now a study shows that shocking blood cells with acid could also trigger the transformation into stem cells - this time termed STAP (stimulus-triggered acquisition of pluripotency) cells.

Dr Haruko Obokata, from the Riken Centre for Developmental Biology in Japan, said she was "really surprised" that cells could respond to their environment in this way.

She added: "It's exciting to think about the new possibilities these findings offer us, not only in regenerative medicine, but cancer as well."

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Stem cell researchers heralding ‘major scientific discovery’

Wednesday 29 January 2014 14.05

A "revolutionary" new approach to creating stem cells in the laboratory could open up a new era of personalised medicine, it is claimed.

Scientists have shown it is possible to reprogramme cells into an embryonic-like state simply by altering their environment.

It means in principle that cells can have their developmental clock turned back without directly interfering with their genes - something never achieved before.

The cells become "pluripotent", having the potential ability to transform themselves into virtually any kind of tissue in the body, from brain to bone.

Reprogramming a patient's own cells in this way is seen as the Holy Grail of regenerative medicine.

It raisesthe prospect of repairing diseased and damaged organs with new healthy tissue that will not be rejected by the immune system.

Current methods of performing the same trick involve genetic manipulation, which carries with it a serious risk of triggering cancer.

But the new method described in the journal Nature requires no genetic tweaking.

Scientists simply bathed immature white blood cells from mice in an acidic solution for 25 minutes.

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Scientists in revolutionary stem cell discovery

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PHILADELPHIA If the content of many a situation comedy, not to mention late-night TV advertisements, is to be believed, theres an epidemic of balding men, and an intense desire to fix their follicular deficiencies.

One potential approach to reversing hair loss uses stem cells to regenerate the missing or dying hair follicles. But it hasnt been possible to generate sufficient number of hair-follicle-generating stem cells until now.

Xiaowei George Xu, MD, PhD, associate professor of Pathology and Laboratory Medicine and Dermatology at the Perelman School of Medicine, University of Pennsylvania, and colleagues published in Nature Communications a method for converting adult cells into epithelial stem cells (EpSCs), the first time anyone has achieved this in either humans or mice.

The epithelial stem cells, when implanted into immunocompromised mice, regenerated the different cell types of human skin and hair follicles, and even produced structurally recognizable hair shaft, raising the possibility that they may eventually enable hair regeneration in people.

Xu and his team, which includes researchers from Penns departments of Dermatology and Biology, as well as the New Jersey Institute of Technology, started with human skin cells called dermal fibroblasts. By adding three genes, they converted those cells into induced pluripotent stem cells (iPSCs), which have the capability to differentiate into any cell types in the body. They then converted the iPS cells into epithelial stem cells, normally found at the bulge of hair follicles.

Starting with procedures other research teams had previously worked out to convert iPSCs into keratinocytes, Xus team demonstrated that by carefully controlling the timing of the growth factors the cells received, they could force the iPSCs to generate large numbers of epithelial stem cells. In the Xu study, the teams protocol succeeded in turning over 25% of the iPSCs into epithelial stem cells in 18 days. Those cells were then purified using the proteins they expressed on their surfaces.

Comparison of the gene expression patterns of the human iPSC-derived epithelial stem cells with epithelial stem cells obtained from human hair follicles showed that the team had succeeded in producing the cells they set out to make in the first place. When they mixed those cells with mouse follicular inductive dermal cells and grafted them onto the skin of immunodeficient mice, they produced functional human epidermis (the outermost layers of skin cells) and follicles structurally similar to human hair follicles.

This is the first time anyone has made scalable amounts of epithelial stem cells that are capable of generating the epithelial component of hair follicles, Xu says. And those cells have many potential applications, he adds, including wound healing, cosmetics, and hair regeneration.

That said, iPSC-derived epithelial stem cells are not yet ready for use in human subjects, Xu adds. First, a hair follicle contains epithelial cells -- a cell type that lines the bodys vessels and cavities as well as a specific kind of adult stem cell called dermal papillae. Xu and his team mixed iPSC-derived EpSCs and mouse dermal cells to generate hair follicles to achieve the growth of the follicles.

When a person loses hair, they lose both types of cells. Xu explains. We have solved one major problem, the epithelial component of the hair follicle. We need to figure out a way to also make new dermal papillae cells, and no one has figured that part out yet.

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First Study to Convert Adult Human Cells to Hair-Follicle-Generating Stem Cells has Implications for Hair Regeneration

Q&A - Stem cells could offer treatment for a myriad of diseases

Tuesday, January 28, 2014

Q.What are stem cells?

Stem cells are different however as they are at an earlier stage in cell development and this means they can make more cells and transform into different cell types such as a skin stem cell can make all the different types of skin cells.

Q. And there are two types? A.Yes. There are two types of stem cells: embryonic stem cells and adult stem cells. Embryonic stem cells can generate all cells of the human body. Adult stem calls generate a more limited number of human cell types.

Q.Why are stem cells so important? A.For many years, adult stem cells have been used to treat rare blood and certain cancers.

However, adult stem cells cant generate all cell types. For example, scientists say there doesnt appear to be an adult stem cell that can make insulin- secreting cells of the pancreas. Embryonic stem cells can, however, as they can generate all cell types and the aim of scientists is to use these embryonic cells to generate healthy tissue to replace cells compromised by disease. This means that embryonic cells are more scientifically useful.

Q. And its also embryonic cells that are the more controversial, right? A.The use of embryonic stem cells is controversial here and in other countries as certain groups believe it is morally wrong to experiment on an embryo that could become a human. Embryonic stem cells are taken from embryos left over after assisted fertility treatments. According to the Irish Stem Cell Foundation, if they werent used for research into human disease, they would be discarded as medical waste. Embryos are not created purely for research purposes they say.

Q. Why are they so useful? A. Among the conditions which scientists believe may eventually be treated by stem cell therapy are Parkinsons disease, Alzheimers disease, heart disease, stroke, arthritis, diabetes, burns and spinal cord damage. Early trials are under way for treating forms of blindness. It is also hoped we can learn from embryonic stem cells how early body tissues develops and more about the pathway of diseases. This will enable us to make better and more effective drugs.

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Q&A - Stem cells could offer treatment for a myriad of diseases

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Newswise PHILADELPHIA - If the content of many a situation comedy, not to mention late-night TV advertisements, is to be believed, theres an epidemic of balding men, and an intense desire to fix their follicular deficiencies.

One potential approach to reversing hair loss uses stem cells to regenerate the missing or dying hair follicles. But it hasnt been possible to generate sufficient number of hair-follicle-generating stem cells until now.

Xiaowei George Xu, MD, PhD, associate professor of Pathology and Laboratory Medicine and Dermatology at the Perelman School of Medicine, University of Pennsylvania, and colleagues published in Nature Communications a method for converting adult cells into epithelial stem cells (EpSCs), the first time anyone has achieved this in either humans or mice.

The epithelial stem cells, when implanted into immunocompromised mice, regenerated the different cell types of human skin and hair follicles, and even produced structurally recognizable hair shaft, raising the possibility that they may eventually enable hair regeneration in people.

Xu and his team, which includes researchers from Penns departments of Dermatology and Biology, as well as the New Jersey Institute of Technology, started with human skin cells called dermal fibroblasts. By adding three genes, they converted those cells into induced pluripotent stem cells (iPSCs), which have the capability to differentiate into any cell types in the body. They then converted the iPS cells into epithelial stem cells, normally found at the bulge of hair follicles.

Starting with procedures other research teams had previously worked out to convert iPSCs into keratinocytes, Xus team demonstrated that by carefully controlling the timing of the growth factors the cells received, they could force the iPSCs to generate large numbers of epithelial stem cells. In the Xu study, the teams protocol succeeded in turning over 25% of the iPSCs into epithelial stem cells in 18 days. Those cells were then purified using the proteins they expressed on their surfaces.

Comparison of the gene expression patterns of the human iPSC-derived epithelial stem cells with epithelial stem cells obtained from human hair follicles showed that the team had succeeded in producing the cells they set out to make in the first place. When they mixed those cells with mouse follicular inductive dermal cells and grafted them onto the skin of immunodeficient mice, they produced functional human epidermis (the outermost layers of skin cells) and follicles structurally similar to human hair follicles.

This is the first time anyone has made scalable amounts of epithelial stem cells that are capable of generating the epithelial component of hair follicles, Xu says. And those cells have many potential applications, he adds, including wound healing, cosmetics, and hair regeneration.

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Converting Adult Human Cells to Hair-Follicle-Generating Stem Cells

January 28, 2014

Brett Smith for redOrbit.com Your Universe Online

While a Chinese cream may not have cured George Costanzas baldness in a classic Seinfeld episode, stem cell research from scientists at the University of Pennsylvania has shown the potential for regenerating hair follicles which could lead to relief for hair-challenged men everywhere.

According to a new report published in the journal Nature Communications, the Pennsylvania researchers have developed a groundbreaking method for converting adult cells into epithelial stem cells (EpSCs). Similar previous efforts have failed to generate an adequate number of hair-follicle-generating stem cells.

In the study, epithelial stem cells were inserted into immunocompromised mice. The stem cells regenerated the various cell types for human skin and hair follicles, and provided structurally identifiable hair shafts, raising the possibility of hair regeneration in humans.

The study team began with human skin cells referred to as dermal fibroblasts. By incorporating three genes, they modified those cells into induced pluripotent stem cells (iPSCs), which have the capacity to differentiate into any cell types in the human body. Next, they modified the iPS cells into epithelial stem cells, commonly located at the base of hair follicles.

Starting with procedures other research groups had worked out to transfer iPSCs into skin cells, Xus team figured out that by carefully manipulating the timing of the cell growth factors, they could drive the iPSCs to produce large quantities of epithelial stem cells. This method was able to turn more than 25 percent of the iPSCs into epithelial stem cells within 18 days. Those cells were then purified based on the proteins they showed on their surfaces.

Comparison of the engineered cells with epithelial stem tissue obtained from hair follicles revealed the team succeeded in making the cells they set out to produce. After mixing all those cells with mouse follicular inductive dermal cells and attaching them onto the pores and skin of immunodeficient mice, the team was able to produce efficient outer layers of human skin tissue and follicles structurally similar to those generated by human hair.

This is the first time anyone has made scalable amounts of epithelial stem cells that are capable of generating the epithelial component of hair follicles, said study author Dr. Xiaowei George Xu, associate professor of pathology and laboratory medicine and dermatology at the university. He added that these cells could be used for healing, cosmetics and hair regeneration.

Xu cautioned that iPSC-derived epithelial stem cells are not yet ready for human subjects.

Originally posted here:
Are Stem Cells The Cure To Baldness?

Posted: Tuesday, January 28, 2014, 9:00 AM

TUESDAY, Jan. 28, 2014 (HealthDay News) -- Scientists might be able to offer "hair-challenged" males a new glimmer of hope when it comes to reversing baldness.

Researchers from the University of Pennsylvania say they've gotten closer to being able to use stem cells to treat thinning hair -- at least in mice.

The researchers said that although using stem cells to regenerate missing or dying hair follicles is considered a potential way to reverse hair loss, it hasn't been possible to create adequate numbers of hair-follicle-generating stem cells -- specifically cells of the epithelium, the name for tissues covering the surface of the body.

But new findings indicate that this may now be achievable.

"This is the first time anyone has made scalable amounts of epithelial stem cells that are capable of generating the epithelial component of hair follicles," Dr. Xiaowei Xu, an associate professor of dermatology at Penn's Perelman School of Medicine, said in a university news release.

Those cells have many potential applications that extend to wound healing, cosmetics and hair regeneration, Xu said.

In the new study, Xu's team converted induced pluripotent stem cells (iPSCs) -- reprogrammed adult stem cells with many of the characteristics of embryonic stem cells -- into epithelial stem cells. This is the first time this has been done in either mice or people, the researchers said.

The epithelial stem cells were mixed with certain other cells and implanted into mice. They produced the outermost layers of skin cells and follicles that are similar to human hair follicles, according to the study, which was published Jan. 28 in the journal Nature Communications. This suggests that these cells might eventually help regenerate hair in people, the researchers said.

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Baldness Cure May Have Inched a Bit Closer

28 January 2014-Scientists from the Genome Institute of Singapore (GIS) in A*STAR have developed a novel method of directing human pluripotent stem cells (hPSCs) into highly pure populations of endoderm[1], a valuable cell type that gives rise to organs including the liver and pancreas.

These cells are highly sought-after for therapeutic and biotechnological purposes, but have been historically difficult to attain from hPSCs. The ability to generate pure endoderm at higher yields from hPSCs is a key and important step towards the use of stem cells in clinical applications.

The discovery, published in the prestigious scientific journal Cell Stem Cell in January 2014, was led by Dr Bing Lim, Senior Group Leader and Associate Director of Cancer Stem Cell Biology at the GIS, Dr Lay Teng Ang, a postdoctoral fellow from Dr Lims lab, and Kyle Loh, a graduate student at Stanford University School of Medicine.

hPSCs are stem cells that can generate over 200 distinct cell types in the human body. They respond to multiple external protein instructions to differentiate into other cell types. Therefore, generating one single cell type from hPSCs, and a pure population of that given cell type, is delicate as hPSCs have a tendency to also form other types of cells.

Employing a highly systematic and novel approach, the group screened for proteins and chemicals that promote the formation of a single desired cell type, and concurrently block induction of unwanted cell types. This strategy uncovered a combination of triggers that could drive hPSCs towards pure populations of endoderm. The valuable cells produced and the insights gained from this work have brought stem cells one step closer to clinical translation and furthered basic research into the understanding of how cell fates are specified during stem cell differentiation.

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:: 28, Jan 2014 :: SINGAPORE SCIENTISTS SUCCEED IN MANIPULATING STEM CELLS INTO LIVER AND PANCREAS PRECURSOR CELLS

Failure to legislate will hurt research

Tuesday, January 28, 2014

Even though stem cell manufacture has just been licensed in this country, the Governments ongoing failure to legislate in this area means pharmaceutical giants will still be wary of investing here, according to an expert in stem cell therapy.

CCMI General Manager Andrew Finnerty, CCMI Director Tim O'Brien, Minister Sean Sherlock and President of NUI Galway Dr. James Browne. Photograph by Aengus McMahon

Once the stem cells are harvested from the bone marrow of adult donors, they are grown in the Galway laboratory to generate sufficient quantities.

The first clinical trial using these stem cells is being funded by the Health Research Board and Science Foundation Ireland and will investigate the safety of using mesenchymal stem cells (MSCs) isolated from bone marrow for the treatment of critical limb ischemia, a complication associated with diabetes which can lead to limb amputation.

John ODea of the Irish Medical Devices Association (IMDA) said the centre was a key step.

I look forward to seeing its continued growth to assist in developing the skill sets and techniques that will be needed to embrace the new manufacturing opportunities that this exciting area will bring, he said.

The centre, one of a handful in Europe authorised for stem cell manufacture, has been developed by researchers at NUIGs regenerative medicine institute.

However, Dr Stephen Sullivan, chief scientific officer with the Irish Stem Cell Foundation warned all stem cell research operates at a pan-global level driven by big pharma and international equity firms and these players will only engage with researchers in countries where there is solid stem cell legislation in place. He welcomed the centre as a first step but said if Ireland is to compete at a top international standard, legislation remains necessary.

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Failure to legislate ‘will hurt research’

Published Monday, 27 January 2014

A young teenager with diabetes tests his blood levels. (UTV)

Scientists behind the new facility at the National University of Ireland Galway will aim to produce adult cells to combat conditions like diabetes, arthritis and heart disease.

Stem cells created at the lab will be used in clinical trials following regulatory approval - the first of which is to test their effects on critical limb ischemia, a common complication associated with diabetes which often results in amputation.

The cells, mesenchymal stem cells (MSCs), will undergo safety tests after being isolated from bone marrow from donors and grown in the laboratory to generate sufficient quantities.

The university said it will position it as a global player in regenerative medicine.

NUI Galway's Centre for Cell Manufacturing Ireland is the first facility on the island of Ireland to receive a licence from the Irish Medicines Board to manufacture culture-expanded stem cells for human use.

It is one of less than half a dozen in Europe authorised for the process.

Some 70% of pharmaceutical companies have regenerative medicine therapies in development, with 575 active trials in cell and gene therapy under way.

There are more than 1,900 cell therapy clinical trials ongoing worldwide with regenerative medicine products generating more than $1bn in revenue in 2012.

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Stem cells lab to open in Galway

AAP Scientists in Ireland aim to produce adult cells to combat conditions like arthritis.

Stem cells for human use are to be made in a university lab in the first medical program of its kind in Ireland.

Scientists behind the new facility at the National University of Ireland (NUI) Galway will aim to produce adult cells to combat conditions like arthritis, heart disease and diabetes.

Stem cells created at the lab will be used in clinical trials following regulatory approval - the first of which is to test their effects on critical limb ischemia, a common complication associated with diabetes which often results in amputation.

The cells, mesenchymal stem cells (MSCs), will undergo safety tests after being isolated from bone marrow from donors and grown in the laboratory to generate sufficient quantities.

The university said it will position it as a global player in regenerative medicine.

NUI Galway's Centre for Cell Manufacturing Ireland is the first facility in Ireland to receive a licence from the Irish Medicines Board to manufacture culture-expanded stem cells for human use.

And it is one of less than half a dozen in Europe authorised for the process.

"Developing Galway's role as med-tech hub of global standing, the Centre for Cell Manufacturing Ireland captures NUI Galway's commitment to bring bold ideas to life," said NUI Galway president Dr Jim Browne.

"Innovation can bridge the gap between patient and provider and meet the needs of industry and the wider society in a balanced way."

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Ireland university lab in stem cells move

11 hours ago by Katarina Sternudd

Scientists at Karolinska Institutet and Gurdon Institute in Cambridge, United Kingdom have identified a novel mechanism that allows pluripotent stem cells to maintain their genome in an unpacked state, and thereby maintain their unique property to give raise to all types of specialized cells in the body. The findings are presented in the journal Nature.

Embryonic stem cells and induced pluripotent stem cells have the capacity to give rise to all cell types present in the adult body. To maintain this immature state, genes that are turned on in specialized cells must remain inactive in pluripotent cells, but ready to be quickly activated upon maturation into, for example, a cell in the skin or liver. The genome of a cell is packed in the nucleus, in a structure called chromatin. If the chromatin packing is tight (condensed), activatory molecules cannot access parts of the genome that control the activation of genes. Thus, for a certain gene to be activated, the chromatin structure must be unpacked (decondensation).

Pluripotent stem cells are unique in that their genome is partially unpacked (chromatin decondensation), when compared to specialized cells, to allow rapid activation of differentiation genes upon a given stimuli. In this published study, an international team, lead by Professor Tony Kouzarides, at the Gurdon Institute, University of Cambridge, identified a specific enzymatic activity, called citrullination, that contributes to decondensed chromatin state in pluripotent cells.

"The genome (DNA) is highly negatively charged and is associated in the chromatin structure with proteins called histones, which are highly positively charged. We found that in pluripotent cells, citrullination reduces the charge of some histones, weakening their association with the genome and contributing to decondensation", says Gonalo Castelo-Branco, principal investigator at Karolinska Institutet and co-first author in the study with Maria Christophorou of the Gurdon Institute.

Gonalo Castelo-Branco's research group at Karolinska Institutet is now investigating roles for citrullination in other immature cells, such as oligodendrocyte precursors in the brain, which participate in myelin regeneration in multiple sclerosis, MS.

Research in this study was funded by grants from Cancer Research UK, the Swedish Research Council, EMBO, European Union 7th Framework Programme (FP7) Marie Curie Actions, among others grants. Gonalo Castelo-Branco implemented parts of the study at the Gurdon Institute, where he was previously a researcher, and at Karolinska Institutet. Among the study authors is also professor John Gurdon, laureate of the Nobel Prize in Physiology or Medicine 2012. Apart from Sweden and United Kingdom, scientists from Denmark, Brasil and USA participated in the study.

Explore further: New method increases supply of embryonic stem cells

More information: "Citrullination regulates pluripotency and histone H1 binding to chromatin." Maria A. Christophorou, Gonalo Castelo-Branco, Richard P. Halley-Stott, et al. Nature (2014) DOI: 10.1038/nature12942. Received 06 September 2012 Accepted 06 December 2013 Published online 26 January 2014

Journal reference: Nature

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New mechanism for genome unpacking in stem cells

Embryonic stem cells have been highly valued for their ability to turn into any type of cell in the body.

Stem cells can be manufactured for human use for the first time in Ireland, following Irish Medicines Board licensing of a new facility in Galway.

NUI Galways Centre for Cell Manufacturing Ireland aims to culture adult stem cells to tackle conditions such as arthritis, heart disease, diabetes and associated conditions.

The centre, which is one of less than half a dozen in Europe authorised for stem cell manufacture, has been developed by researchers at NUIGs regenerative medicine institute.

Stem cells serve as the bodys repair mechanism. They can be isolated from tissues such as bone marrow and fat, and cultured in laboratory settings.

More controversially, embryonic stem cells have been highly valued for their ability to turn into any type of cell in the body, but scientists can now use reprogrammed adult skin cells to create a stem cell that is very similar to embryonic versions.

The centre will be opened today by Minister of State for Research and Innovation Sen Sherlock, at a time when the Health Research Board and Science Foundation Ireland have approved funding there for clinical trials on using mesenchymal stem cells cells that can differentiate into a variety of types for treatment of critical limb ischemia, a condition associated with diabetes that can result in amputation.

The new centres director Prof Tim OBrien explained that the stem cells must be grown in the laboratory to generate sufficient quantities, following their isolation from the bone marrow of adult donors, and the facility will help Ireland to develop therapies for a broad range of clinical problems which do not have effective treatments today.

It will also allow us to translate discoveries from the basic stem cell research programme led by Prof Frank Barry at the Science Foundation Ireland-funded REMEDI to the clinic, and to be competitive for grant funding under the Horizon 2020 programme of the EU, he said.

Stem cell research in Ireland is in what scientists have described as a legislative lacuna, but this relates to use of embryonic stem cells and does not in any way inhibit the use of adult stem cells, Prof OBrien explained.

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Ireland’s first stem cell manufacturing centre approved at NUI Galway

Embryonic stem cells have been highly valued for their ability to turn into any type of cell in the body.

Stem cells can be manufactured for human use for the first time in Ireland, following Irish Medicines Board licensing of a new facility in Galway.

NUI Galways Centre for Cell Manufacturing Ireland aims to culture adult stem cells to tackle conditions such as arthritis, heart disease, diabetes and associated conditions.

The centre, which is one of less than half a dozen in Europe authorised for stem cell manufacture, has been developed by researchers at NUIGs regenerative medicine institute.

Stem cells serve as the bodys repair mechanism. They can be isolated from tissues such as bone marrow and fat, and cultured in laboratory settings.

More controversially, embryonic stem cells have been highly valued for their ability to turn into any type of cell in the body, but scientists can now use reprogrammed adult skin cells to create a stem cell that is very similar to embryonic versions.

The centre will be opened today by Minister of State for Research and Innovation Sen Sherlock, at a time when the Health Research Board and Science Foundation Ireland have approved funding there for clinical trials on using mesenchymal stem cells cells that can differentiate into a variety of types for treatment of critical limb ischemia, a condition associated with diabetes that can result in amputation.

The new centres director Prof Tim OBrien explained that the stem cells must be grown in the laboratory to generate sufficient quantities, following their isolation from the bone marrow of adult donors, and the facility will help Ireland to develop therapies for a broad range of clinical problems which do not have effective treatments today.

It will also allow us to translate discoveries from the basic stem cell research programme led by Prof Frank Barry at the Science Foundation Ireland-funded REMEDI to the clinic, and to be competitive for grant funding under the Horizon 2020 programme of the EU, he said.

Stem cell research in Ireland is in what scientists have described as a legislative lacuna, but this relates to use of embryonic stem cells and does not in any way inhibit the use of adult stem cells, Prof OBrien explained.

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Island’s first stem cell manufacturing centre approved at NUI Galway