Archive for the ‘Skin Stem Cells’ Category

12-02-2012 04:51 More info: effotset.com

Go here to read the rest:
Stem Cell Skin Repair - Video

This video is not supported by your browser at this time.

Claire Cox: “The identification of the factors involved in controlling these populations and thus epidermal maintenance is highly valuable. Not only will it provide information as to how a complex tissue is organized and controlled, the principles that are learnt can be applied to other tissues. Through the work that I am completing, I hope that I can also gain a perspective as to what goes wrong in disease processes such as skin cancer. Skin cancer is one of the most prevalent cancers in the world, and understanding what goes wrong and the factors involved could potentially lead to new ideas as to prevention and treatment.”

The image is 700µm in width – this is about the size of the full stop in this sentence. About 5000 cells would fit on the surface of a full stop.

Under the Microscope is a collection of videos that show glimpses of the natural and man-made world in stunning close-up. They are released every Monday and Thursday and you can see them here: http://bit.ly/A6bwCE

Provided by University of Cambridge (news : web)

Go here to see the original:
Under the Microscope #10 - Mouse tail skin

Monkeys suffering from Parkinson's disease show a marked improvement when human embryonic stem cells are implanted in their brains, in what a Japanese researcher said Wednesday was a world first.

A team of scientists transplanted the stem cells into four primates that were suffering from the debilitating disease.

The monkeys all had violent shaking in their limbs -- a classic symptom of Parkinson's disease -- and were unable to control their bodies, but began to show improvements in their motor control after about three months, Kyoto University associate professor Jun Takahashi told AFP.

About six months after the transplant, the creatures were able to walk around their cages, he said.

"Clear improvements were confirmed in their movement," he said.

Parkinson's disease is a progressive neurological illness linked to a decrease in dopamine production in the brain. There is currently no medical solution to this drop off in a key neurotransmitter.

The condition, which generally affects older people, gained wider public recognition when Hollywood actor Michael J. Fox revealed he was a sufferer.

Takahashi said at the time of the implant about 35 percent of the stem cells had already grown into dopamine neuron cells, with around 10 percent still alive after a year.

He said he wants to improve the effectiveness of the treatment by increasing the survival rate of dopamine neuron cells to 70 percent.

"The challenge before applying it to a clinical study is to raise the number of dopamine neuron cells and to prevent the development of tumours," he said.

"I would like to make this operation more effective and safe" before clinical trials, Takahashi said.

Takahashi said so far he had used embryonic stem cells, which are harvested from foetuses, but would likely switch to so-called Induced Pluripotent Stem (iPS) cells, which are created from human skin, for the clinical trial.

His team, which has also transplanted iPS cells into monkeys, are now looking to see if the primates with Parkinson's disease show similar improvements in their motor control.

Scientists say the use of human embryonic stem cells as a treatment for cancer and other diseases holds great promise, but the process has drawn fire from religious conservatives, among others.

Opponents say harvesting the cells, which have the potential to become any cell in the human body, is unethical because it involves the destruction of an embryo.

The Japanese government currently has no guidelines on the use of human stem cells in clinical research.

In October last year, the Court of Justice of the European Union banned the patenting of stem cells when their extraction causes the destruction of a human embryo, a ruling that could have repercussions on medical research.

Scientists warned that the ruling would damage stem cell research in Europe, while the Catholic church hailed it as a victory for the protection of human life.

Here is the original post:
Stem cell implants boost monkeys with Parkinson's

To: HEALTH, MEDICAL AND NATIONAL EDITORS

SCOTTSDALE, Ariz., Feb. 21, 2012 /PRNewswire-USNewswire/ -- Makucell, Inc., a new life science company that utilizes an innovative proprietary regenerative medicine technology to address aging skin, hair and nail conditions, has presented important pre-clinical and clinical information on its proprietary molecule, Asymmtate, at the 36th Annual Hawaii Dermatology Seminar, Waikoloa, Hawaii. Asymmtate(TM) is the active key ingredient in Makucell's new topical skin care line Renewnt(TM) (pronounced "Re-new-int").

Asymmtate(TM) is a selective modulator of the Wnt (pronounced "wint") signaling pathway that encourages optimal signaling to stimulate skin stem cells to replenish themselves, keratinocytes, fibroblasts and other dermal cells, which produce collagen, elastic tissue, matrix and other substances to foster a more healthy, rejuvenated appearing skin. Renewnt(TM) will be available through aesthetic dermatology professionals in April 2012.

Mark Dahl, M.D. Makucell's, Vice President and Chief Medical Officer, presented the two scientific poster presentations. The presentation titles and conclusions are summarized below.

-- The Safety and Efficacy of Asymmtate - Asymmtate(TM) penetrates into human epidermis and dermis and remains active. Asymmtate in its cream vehicles is non-mutagenic, non-irritating, and non-sensitizing. -- Asymmtate(TM) Analog Mitigates Photoaging Effects of UVB in Mice - An analog of Asymmtate applied topically can mitigate the subsequent visible appearance of photoaging changes in mice after exposures of their skin to UVB.

In addition to the pre-clinical/clinical information presented this week, Makucell has initiated a 100 subject Use Study to evaluate the safety and efficacy of Renewnt(TM) for Hydration Day and Night Moisturizer in a real world setting. This four-week study will include 12 investigator sites across the U.S. "This large multicenter study is very important to validate aspects of clinical product performance of Asymmtate(TM) under real world conditions. The diverse geographical study sites will allow us to evaluate effects on unique skin types in different climates," said Lawrence A. Rheins, President and CEO of Makucell.

The innovative technology that resulted in the formulation of Renewnt was developed by distinguished research scientist Michael Kahn, Ph.D. and colleagues at the Eli & Edythe Broad Center for Stem Cell and Regenerative Medicine at the University of Southern California, Keck School of Medicine. "This is an exciting time for Makucell," said Makucell co-founder and inventor Michael Kahn, Ph.D. "This technology will be utilized for commercial topical applications to address the challenges of photoaging skin and other hair and nail conditions."

For media and investment inquiries please contact please contact Lawrence Rheins, lrheins@makucellinc.com or 1-855-MAKUCELL.

About Makucell

Makucell (www.makucell.com) is a new life science technology transfer company that utilizes an innovative proprietary regenerative medicine technology to address aging skin, hair and nail conditions in an entirely new way. Using a patent-pending new molecule, Asymmtate, Makucell has developed the Renewnt brand of non-prescription products that work with the skin's own stem cells to produce healthier, and more youthful appearing skin. This innovative technology was developed by researchers at the Eli & Edythe Broad Center for Stem Cell and Regenerative Medicine at the University of Southern California Keck School of Medicine. Makucell is financed through private investors and is not in receipt of government funding.

About the USC Stevens Institute for Innovation

The USC Stevens Institute for Innovation (http://stevens.usc.edu) is a university-wide resource in the Office of the Provost at the University of Southern California that helps identify, nurture, protect, and transfer to the market the most exciting innovations from USC. It also provides a central connection for industry seeking cutting-edge innovations in which to invest. As part of this role, the USC Stevens Institute manages the university's intellectual property portfolio stemming from its $560M annual research program. Furthermore, the USC Stevens Institute develops the innovator as well as innovations, through educational programs, community-building events, and showcase opportunities.

Media Contact:

Lawrence Rheinslrheins@makucellinc.com1-480-305-2061

SOURCE USC Stevens Institute for Innovation

-0-

View post:
Makucell(TM) Announces Key Scientific Presentations and Launch of a Large, Multicenter Use Study of Asymmtate(TM)

PHILADELPHIA, Feb. 21, 2012 /PRNewswire/ -- E'shee Clinical Esthetic announced this week a new addition to its product line of skin serums – Elixir of Life KI Therapy Serum – designed to deliver ultimate skin rejuvenation.

This new skin care product is based on a combination of stem cell and infra-red nano technology. It is the most potent skin care formula that combines gene therapy (FGF 1 peptide) and Far Infrared Powder (FIR) to rejuvenate and restore the beauty of damaged or aging skin.

This new Elixir of Life Serum helps to activate the body's stem cells to repair damaged tissue and skin regeneration.

"Results are proven. The FGF-1 peptide – the stem cell activator – helps to increase new skin cell growth at least 10-20 times faster than with other skin care products," says Nataly Giter, founder, E'shee Clinical Esthetic.

Elixir of Life is ideal for people with circulation problems due to external factors such as pollution, and physical problems due to illness, medications or smoking. It works to repair dark circles and broken capillaries; delays the overall skin aging process through skin repair and re-growth; and also works to properly heal and repair scar tissue.

People of all ages – men and women – will see physical results within 30 days. Skin will be healthier and firmer with a smoother and more even skin tone. 

"Ultimately, this new product helps to restore blood flow; aids with toxin removal; repairs broken capillaries; and reverses skin damage. We are very excited to offer this to anyone wishing to dramatically improve their skin care," says Giter. 

About E'shee Clinical Esthetic:

E'shee was launched in 2009 by Nataly Giter, a hands-on skin care professional with more than 20 years of experience. Through research and practical experience, she learned about the most effective ingredients for advanced skin care and became associated with Dr. Chiu, a professor from Ohio University and the first global pioneer to clone the human FGF 1 gene.

Together with Dr. Chiu and their combined connections to industry professionals, they utilized FGF 1 to create an extraordinary anti-aging product line, using 99 percent pure FGF 1 peptide - the best quality available outside of the human body.

For more information on E'shee Clinical Esthetic, visit: http://www.esheeesthetic.com or http://www.esheeesthetic.com/wordpress/.

* Photo 300dpi download for media: Send2Press.com/mediaboom/12-0221-eshee_300dpi.jpg
* Photo Caption:  Elixir of Life Serum.

This release was issued on behalf of the above organization by Send2Press(R), a unit of Neotrope(R). http://www.Send2Press.com

See the original post:
E'shee Clinical Esthetic Launches High-Tech Skin Serum

An important new study by a team of scientists at RhinoCyte™ Inc., Louisville, Ky., details promising results on the effectiveness of olfactory (nasal) stem cells in repairing spinal cord damage resulting from the most common cause of these injuries — contusions (bruising) due to major trauma such as is seen in auto accidents, falls or combat. This could have major implication for the estimated 5 million people worldwide affected by spinal cord injuries – 1.275 million of them in the United States alone, where the cost of treatment exceeds $40.5 billion each year.

Louisville, Kentucky (PRWEB) February 22, 2012

An important new study released by a team of scientists at RhinoCyte™ Inc., Louisville, Ky., details promising results on the effectiveness of olfactory (nasal) stem cells in repairing spinal cord damage resulting from the most common cause of these injuries — contusions (bruising) due to major trauma. Their study is featured in the current issue of the Journal of Neurodegeneration and Regeneration.

The study, led by Dr. Fred Roisen, has great implication for the estimated 5 million people worldwide affected by spinal cord injuries – 1.275 million of them in the United States alone, where the cost of treatment exceeds $40.5 billion each year. Current treatment options are limited to retaining and retraining mobility; no drug therapies are available, but studies pertaining to stem cell treatments are showing great promise for these as well as other neurodegenerative conditions.

A previous study by the group made national headlines when lab rats whose spinal cords had been partially cut in the region of the animal’s neck in a way that disabled their front right paws were able to regain significant use of their paws after being injected with olfactory stem cells. The investigative team took the cells from the olfactory neurosensory epithelium — the part of the nose that controls the sense of smell — in adult volunteer donors who were already undergoing elective sinus surgery. The removal of the stem cells has no effect on the patients’ ability to smell. Also, the minimally invasive surgery is frequently done on an outpatient basis so the cells are readily available and, as such, are a potentially promising source of therapeutic stem cells.

The researchers isolated the stem cells and increased their numbers in the laboratory by growing them in an enriched solution. The cells were then injected into a group of lab rats. Twelve weeks later, these animals had regained control of their affected paws while a control group that received no cells had not.

This latest study continued that original work, by concentrating on contusions caused by blunt force trauma such as that resulting from an automobile accident or a fall. Spinal cord and head trauma are common among soldiers suffering serious combat injuries, too.

Two independent sets of experiments were conducted, beginning two weeks after the rats had received contusions administered in a computer-controlled surgery. In the first group, 27 out of 41 rats were injected with olfactory stem cells, while the remainder received none. In the second group, 16 rats were treated with olfactory stem cells, 11 received no treatment and 10 received stem cells grown from human skin to see how the olfactory cells compared with another stem cell source.

The results once again showed great promise, with 40 percent of the rats treated with the olfactory-derived stem cells showing significant improvement after just six weeks, compared to 30 percent of those treated with human skin-derived cells and only 9 percent of those receiving no treatment. In addition, the olfactory stem cell-treated rats showing the highest rate of improvement recovered much faster than the other groups.

“This is very exciting on numerous levels,” said Dr. Roisen. “As an autologous cell source — that is, the patient is both the donor and the recipient — olfactory stem cells bypass the time a patient must wait while a suitable donor is found, which can be critical to the outcome of the patient’s treatment. They also eliminate the need for immunosuppressive drugs, which have numerous negative side effects.

“And just as importantly, stem cells taken from the nose of an adult do away with the ethical concerns associated with using embryonic stem cells.”

The researchers are in the final stages of their enabling studies, which are scheduled to be completed by summer; Phase 1 safety studies could begin as soon as early next year.

Dr. Roisen is chief science officer and co-founder of RhinoCtye™, and a professor and chair of the University of Louisville School of Medicine’s Department of Anatomical Sciences and Neurobiology. The original work forming the basis for the contusion study was conducted by Dr. Roisen’s group at UofL and has been licensed to RhinoCtye™ (http://www.rhinocyte.com), a company he co-founded in 2005 with Dr. Chengliang Lu and Dr. Kathleen Klueber to develop and commercialize diagnostic tools and therapies for stem cell treatment of multiple degenerative and traumatic neurological diseases. RhinoCyte™ currently has three patents for olfactory stem cell treatments approved in the United States, Australia and Israel, with others pending worldwide.

###

Laurel Harper
Laurel92@msn.com
502-550-0089
Email Information

Originally posted here:
Nasal Stem Cells Show Promise in Repairing Spinal Cord Damage Caused by Contusion

18-01-2012 23:09 NewHopeForAging.info - Beverly Hills Plastic Surgeon, Dr. Nathan Newman reveals the truth about the Adult Stem Cell Technology...and the ONLY product on the market with it Luminesce, by Jeunesse. Order it at: NewHope.JeunesseGlobal.com or call 561.779.0000

See the original post here:
Dr Newman Exposes The Truth about Adult Stem Cells - Video

A research team led by UC Davis Health System scientists has developed a novel technique to enhance bone growth by using a molecule which, when injected into the bloodstream, directs the body's stem cells to travel to the surface of bones.

Once these cells are guided to the bone surface by this molecule, the stem cells differentiate into bone-forming cells and synthesize proteins to enhance bone growth. The study, which was published online today in Nature Medicine, used a mouse model of osteoporosis to demonstrate a unique treatment approach that increases bone density and prevents bone loss associated with aging and estrogen deficiency.

"There are many stem cells, even in elderly people, but they do not readily migrate to bone," said Wei Yao, the principal investigator and lead author of the study. "Finding a molecule that attaches to stem cells and guides them to the targets we need is a real breakthrough."

Researchers are exploring stem cells as possible treatments for a wide variety of conditions and injuries, ranging from peripheral artery disease and macular degeneration to blood disorders, skin wounds and diseased organs. Directing stem cells to travel and adhere to the surface of bone for bone formation has been among the elusive goals in regenerative medicine.

The researchers made use of a unique hybrid molecule, LLP2A-alendronate, developed by a research team led by Kit Lam, professor and chair of the UC Davis Department of

Biochemistry and Molecular Medicine. The researchers' hybrid molecule consists of two parts: the LLP2A part that attaches to mesenchymal stem cells in the bone marrow, and a second part that consists of the bone-homing drug alendronate. After the hybrid molecule was injected into the bloodstream, it picked up mesenchymal stem cells in the bone marrow and directed those cells to the surfaces of bone, where the stem cells carried out their natural bone-formation and repair functions.

"Our study confirms that stem-cell-binding molecules can be exploited to direct stem cells to therapeutic sites inside an animal," said Lam, who also is an author of the article. "It represents a very important step in making this type of stem cell therapy a reality."

Read this article:
Stem cells used to increase bone strength

Posted on February 17, 2012, Friday

KUCHING: Organic solutions company Juice Beauty is introducing three new products in its Stem Cellular Repair line to the public, incorporating technology and science in delivering the new products.

“The three products, namely Stem Cellular Repair Moisturiser, Stem Cellular Repair Eye Treatment and Stem Cellular Repair Booster Serum work at the cellular level to repair damage and increase cellular proliferation,” explained Juice Beauty retail outlet manager, Shirley Ann Tan.

The products were noted to have used the brand’s own proprietary blend of organic fruit stem cells injected into its clinically validated antioxidant rich organic juice base to help decrease DNA damage and accelerate cellular proliferation.

Tan stated that Juice Beauty products were antioxidant-rich and made from 100 per cent organic juices. The formulations were protected from environmental contamination with high tech airtight pump jars.

The manager added, “The reason we are so intent in creating organic products is that we want people to avoid using harmful chemicals in their skin care range for health purposes. People with eczema, skin problems and allergies could feel free to try out our organic products.”

Juice Beauty’s boasts its patent-pending juice base which does not have any drying effect on the skin or suffocate the skin as alcohol- or petroleum-based products do.

“Using an organic juice base provides the benefit of having every drop of the product feed your skin,” she highlighted.

The new products are currently available at Juice Beauty’s outlet at tHe Spring Mall.

<< Previous Entry - Next Entry >>

Continue reading here:
Juice Beauty’s to boost organic skin care further with Stem Cellular Repair line

Public release date: 16-Feb-2012
[ | E-mail | Share ]

Contact: Tara Womersley
tara.womersley@ed.ac.uk
44-131-650-9836
University of Edinburgh

Scientists have found a way to generate and maintain stem cells much more efficiently by amplifying the effect of an essential protein.

Researchers from Denmark, Scotland and the USA have created synthetic versions of a protein, which manipulates adult cells ? such as skin cells ? so that they can subsequently revert to an earlier, embryonic like state. These reverted cells have the potential to become any cell in the body.

As well as reverting adult cells to this state ? known as induced pluripotent stem cells , the protein also plays a key role in maintaining embryonic stem cells in a pure form. If the protein ? Oct4 ? is not present, the embryonic stem cells will start to differentiate into specific cells.

In order to reprogamme adult cells to have stem cell properties viruses need to be added to cell cultures to trigger production of significant quantities of Oct4.

Oct4 plays a powerful role in regulating stem cell genes. However, while large quantities of Oct4 are needed too much of it can ruin the properties of stem cells.

Scientists, whose work is published in the journal Cell Reports, were able to overcome this by producing a synthetic version of Oct4 that amplified the effect of the protein in its natural form.

The synthetic version of Oct4 was much more efficient in turning on genes that instruct cells on how to be stem cells and, as a result, the cells did not need as much Oct4 for either reprogramming or to remain as stem cells ? thereby eliminating problems caused by too much Oct4.

In fact, the synthetic Oct4 could support stem cells under conditions that they do not normally grow. These findings could also help scientists find new ways generate stem cells in the laboratory.

The study showed that Oct4 was mainly responsible for turning on genes that instruct cells on how to become stem cells, rather than turning off genes that encourage the cells to differentiate.

"Our discovery is an important step towards generating and maintaining stem cells much more effectively," says Professor Joshua Brickman, affiliated with both The Danish Stem Cell Center (DanStem), University of Copenhagen and Medical Research Council Centre for Regenerative Medicine at the University of Edinburgh.

"Embryonic stem cells are characterized, among other things, by their ability to perpetuate themselves indefinitely and differentiate into all the cell types in the body ? a trait called pluripotency. But to be able to use them medically, we need to be able to maintain them in a pure state, until they're needed. When we want to turn a stem cell into a specific cell, such as insulin producing beta cell, or a nerve cell in the brain, we'd like this process to occur accurately and efficiently. This will not be possible if we don't understand how to maintain stem cells as stem cells. As well as maintaining embryonic stem cells in their pure state more effectively, the artificially created Oct4 was also more effective at reprogramming adult cells into so-called induced Pluripotent Stem cells, which have many of the same traits and characteristics as embryonic stem cells but can derived from the patients to both help study degenerative disease and eventually treat them.."

Oct4 is a so-called transcription factor ? a protein that binds to specific DNA sequences, thereby controlling the flow (or transcription) of genetic information from DNA to mRNA. The synthetic version of Oct4 was created by using recombinant DNA technology whereby a gene was modified to produce new and more active protein. The modified gene was either introduced into stem cells or used to reprogram adult skin cells.

If scientists can exploit this programming of stem cell programs, it will improve the ability to generate stem cells directly from a patient. These cells could in turn potentially be used for individualised studies and for developing individualized therapies for degenerative diseases such as type 1 diabetes and neuro-degenerative diseases.

###

The paper "Transcriptional Activation by Oct4 Is Sufficient for the Maintenance and Induction of Pluripotency", is published in Cell Reports on February 16, 2012, 12:00 EST US time/18:00 Danish time/17:00 UK time. The study involved mouse embryonic stem cells, early embryonic progenitors cells in frogs as well as iPS cells from both mouse and human sources. The research was supported by grants from the Novo Nordisk Foundation (DK), the Medical Reseach Council and the Biotechnology and Biological Sciences Research Council (MRC and BBSRC, UK).

Contact: Tara Womersley, Press and PR Officer, University of Edinburgh, 44-131-650-9836 or 44-7791-355-804

Link to Cell Report: http://cellreports.cell.com/

Embargo: Until February 16 at 12:00 EST US time/18:00 Danish time/17:00 UK time

About DanStem

The Danish Stem Cell Center opened in the Summer 2011 as a hub for international basic, translational and early clinical stem cell research. Professor Brickman and his group joined DanStem in October 2011 to partake in the build-up the center.

DanStem address basic questions in stem cell and developmental biology, and develop novel stem cell based therapeutic approaches for diabetes and cancer. It is supported by two major grants from Novo Nordisk Foundation (DKK 350 million (? 47 million)) and the Danish Research Council for Strategic Research (DKK 64.8 million (? 8,7 million)), respectively. More information about DanStem at: http://danstem.ku.dk

About Medical Research Council Centre for Regenerative Medicine

The MRC Centre for Regenerative Medicine (CRM) is a world leading research centre based at the University of Edinburgh. Together we study stem cells, disease and tissue repair to advance human health. Our research is aimed at developing new treatments for major diseases including cancer, heart disease, diabetes, degenerative diseases such as multiple sclerosis and Parkinson's disease, and liver failure. http://www.crm.ed.ac.uk

[ | E-mail | Share ]

AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.

Continue reading here:
Synthetic protein amplifies genes needed for stem cells

February 13, 2012

Researchers at the University of Cambridge report that they created cerebral cortex cells from a small sample of human skin.

The new development could pave the way for techniques to explore a wide range of diseases such as autism and Alzheimer’s.

The findings could also enable scientists to study how the human cerebral cortex develops — and how it “wires up” and how that can go wrong.

“This approach gives us the ability to study human brain development and disease in ways that were unimaginable even five years ago,” Dr Rick Livesey of the Gurdon Institute and Department of Biochemistry at the University of Cambridge said in a statement.

During the research, the scientists biopsied skin from patients and then reprogrammed the cells from the skin samples back into stem cells.

These stem cells, along with human embryonic stem cells, were used to generate cerebral cortex cells.

Livesey said they are using this system to help recreate Alzheimer’s disease in the lab, which primarily affects the type of nerve cell the researchers made.

“Dementia is the greatest medical challenge of our time – we urgently need to understand more about the condition and how to stop it,” Dr Simon Ridley, Head of Research at Alzheimer’s Research UK, said in a press release. “We hope these findings can move us closer towards this goal.”

Brain cells developed this way could help researchers gain a better understanding of how the brain develops and what goes wrong when it is affected by disease.

Scientists hope the cells could be used to provide healthy tissues, which can be implanted into patients to treat neurodegenerative diseases and brain damage.

The findings were published in the journal Nature Neuroscience.

—

On the Net:

Source: RedOrbit Staff & Wire Reports

View original post here:
Researchers Develop Cerebral Cortex Cells From Skin

February 13, 2012

Researchers at the University of Cambridge report that they created cerebral cortex cells from a small sample of human skin.

The new development could pave the way for techniques to explore a wide range of diseases such as autism and Alzheimer’s.

The findings could also enable scientists to study how the human cerebral cortex develops — and how it “wires up” and how that can go wrong.

“This approach gives us the ability to study human brain development and disease in ways that were unimaginable even five years ago,” Dr Rick Livesey of the Gurdon Institute and Department of Biochemistry at the University of Cambridge said in a statement.

During the research, the scientists biopsied skin from patients and then reprogrammed the cells from the skin samples back into stem cells.

These stem cells, along with human embryonic stem cells, were used to generate cerebral cortex cells.

Livesey said they are using this system to help recreate Alzheimer’s disease in the lab, which primarily affects the type of nerve cell the researchers made.

“Dementia is the greatest medical challenge of our time – we urgently need to understand more about the condition and how to stop it,” Dr Simon Ridley, Head of Research at Alzheimer’s Research UK, said in a press release. “We hope these findings can move us closer towards this goal.”

Brain cells developed this way could help researchers gain a better understanding of how the brain develops and what goes wrong when it is affected by disease.

Scientists hope the cells could be used to provide healthy tissues, which can be implanted into patients to treat neurodegenerative diseases and brain damage.

The findings were published in the journal Nature Neuroscience.

—

On the Net:

Source: RedOrbit Staff & Wire Reports

Original post:
Researchers Develop Cerebral Cortex Cells From Skin

Eventually they hope the cells could also be used to provide healthy tissue that can be implanted into patients to treat neurodegenerative diseases and brain damage.

Dr Rick Livesey, who led the research at the University of Cambridge's Gurdon [corr] Institute, said: "The cerebral cortex makes up 75% of the human brain, is where all the important processes that make us human take place. It is, however, also the major place where disease can occur.

"We have been able to take reprogrammed skin cells so they develop into brain stem cells and then essentially replay brain development in the laboratory.

"We can study brain development and what goes wrong when it is affected by disease in a way we haven't been able to before. We see it as a major breakthrough in what will now be possible."

The cerebral cortex is the part of the brain that is responsible for most of the major high-level thought processes such as memory, language and consciousness.

While human brain cells have been created from stem cells before, this has relied upon embryonic stem cells. Attempts to make them from skin cells have produced neurons that are not found in the cerebral cortex.

Dr Livesey and his colleagues were able to create the two major types of neuron that form the cerebral cortex from reprogrammed skin cells and show that they were identical to those created from the more controversial embryonic stem cells.

Dr Livesey, whose findings are published in the journal Nature Neuroscience, said this may eventually lead to new treatments for patients where damaged tissue could be replaced by brain cells grown in the laboratory from a sample of their skin.

He said: "You don't need to rebuild damage to recover function as the brain is quite good at recovering itself – it does this after stroke for example. However, it may be possible to give it some extra real estate that it can use to do this.

"We can make large numbers of cerebral cortex neurons by taking a sample of skin from anybody, so in principal it should be possible to put these back into the patients."

Dr Simon Ridley, head of research at Alzheimer's Research UK, which funded the study alongside the Wellcome Trust, added: "Turning stem cells into networks of fully functional nerve cells in the lab holds great promise for unravelling complex brain diseases such as Alzheimer's."

Excerpt from:
Human brain cells created from skin

LONDON: British scientists are claiming a breakthrough after creating brain tissue from human skin.

The researchers have for the first time generated a crucial type of brain cells in the laboratory by reprogramming skin cells.

They say it could speed up the hunt for new treatments for conditions such as Alzheimer's disease, epilepsy and stroke.

Advertisement: Story continues below

Until now it has only been possible to generate tissue from the cerebral cortex, the area of the brain where most serious neurological diseases occur, by using controversial embryonic stem cells, obtained by the destruction of an embryo. This has meant the supply of brain tissue available for research has been limited due to ethical concerns and limited availability.

Scientists at the University of Cambridge say that they have overcome this problem, showing for the first time that it is possible to re-program adult human skin cells so that they develop into neurons found in the cerebral cortex.

Initially, brain cells grown in this way could be used to help researchers gain a better understanding of how the brain develops and what goes wrong when it is affected by disease. They could also be used for screening new drug treatments.

Eventually, they hope the cells could be used to provide healthy tissue that can be implanted into patients to treat neurodegenerative diseases and brain damage.

Dr Rick Livesey, who led the research at the university's Gurdon Institute, said: ''The cerebral cortex makes up 75 per cent of the human brain. It is where all the important processes that make us human take place. It is, however, also the major place where disease can occur.

''We have been able to take reprogrammed skin cells so they develop into brain stem cells and then essentially replay brain development in the laboratory.

''We can study brain development and what goes wrong when it is affected by disease in a way we haven't been able to before. We see it as a major breakthrough in what will now be possible,'' said Dr Livesey, whose findings are published in the journal Nature Neuroscience.

The cerebral cortex is the part of the brain that is responsible for most of the high-level thought processes such as memory, language and consciousness.

Telegraph, London

See more here:
Scientists grow brain cells from human skin

London, Feb 12 (ANI): British scientists have for the first time generated crucial types of human brain cells in the laboratory by reprogramming skin cells, which they say could speed up the hunt for new treatments for conditions such as Alzheimer's disease, epilepsy and stroke.

Until now it has only been possible to generate tissue from the cerebral cortex, the area of the brain where most major neurological diseases occur, by using controversial embryonic stem cells, obtained by the destruction of an embryo.

This has meant the supply of brain tissue available for research has been limited due to the ethical concerns around embryonic stem cells and shortages in their availability.

However, scientists at the University of Cambridge now insist they have overcome this problem after showing for the first time that it is possible to re-programme adult human skin cells so that they develop into neurons found in the cerebral cortex, the Telegraph reported.

Initially brain cells grown in this way could be used to help researchers gain a better understanding of how the brain develops, what goes wrong when it is affected by disease and it could also be used for screening new drug treatments.

Eventually they hope the cells could also be used to provide healthy tissue that can be implanted into patients to treat neurodegenerative diseases and brain damage.

The cerebral cortex is the part of the brain that is responsible for most of the major high-level thought processes such as memory, language and consciousness.

"The cerebral cortex makes up 75 percent of the human brain, is where all the important processes that make us human take place. It is, however, also the major place where disease can occur," said Dr Rick Livesey, who led the research at the University of Cambridge's Gurdon [corr] Institute.

"We have been able to take reprogrammed skin cells so they develop into brain stem cells and then essentially replay brain development in the laboratory.

"We can study brain development and what goes wrong when it is affected by disease in a way we haven't been able to before. We see it as a major breakthrough in what will now be possible," he added.

Dr Livesey and his colleagues were able to create the two major types of neuron that form the cerebral cortex from reprogrammed skin cells and show that they were identical to those created from the more controversial embryonic stem cells.

He said this may eventually lead to new treatments for patients where damaged tissue could be replaced by brain cells grown in the laboratory from a sample of their skin.

"You don't need to rebuild damage to recover function as the brain is quite good at recovering itself - it does this after stroke for example. However, it may be possible to give it some extra real estate that it can use to do this," Dr Livesey said.

"We can make large numbers of cerebral cortex neurons by taking a sample of skin from anybody, so in principal it should be possible to put these back into the patients," he added.

Dr Simon Ridley, head of research at Alzheimer's Research UK, which funded the study alongside the Wellcome Trust, said: "Turning stem cells into networks of fully functional nerve cells in the lab holds great promise for unravelling complex brain diseases such as Alzheimer's."

The findings were published in the journal Nature Neuroscience. (ANI)

View post:
Brain cells created from human skin

LONDON: British scientists are claiming a breakthrough after creating brain tissue from human skin.

The researchers have for the first time generated a crucial type of brain cells in the laboratory by reprogramming skin cells.

They say it could speed up the hunt for new treatments for conditions such as Alzheimer's disease, epilepsy and stroke.

Advertisement: Story continues below

Until now it has only been possible to generate tissue from the cerebral cortex, the area of the brain where most serious neurological diseases occur, by using controversial embryonic stem cells, obtained by the destruction of an embryo. This has meant the supply of brain tissue available for research has been limited due to ethical concerns and limited availability.

Scientists at the University of Cambridge say that they have overcome this problem, showing for the first time that it is possible to re-program adult human skin cells so that they develop into neurons found in the cerebral cortex.

Initially, brain cells grown in this way could be used to help researchers gain a better understanding of how the brain develops and what goes wrong when it is affected by disease. They could also be used for screening new drug treatments.

Eventually, they hope the cells could be used to provide healthy tissue that can be implanted into patients to treat neurodegenerative diseases and brain damage.

Dr Rick Livesey, who led the research at the university's Gurdon Institute, said: ''The cerebral cortex makes up 75 per cent of the human brain. It is where all the important processes that make us human take place. It is, however, also the major place where disease can occur.

''We have been able to take reprogrammed skin cells so they develop into brain stem cells and then essentially replay brain development in the laboratory.

''We can study brain development and what goes wrong when it is affected by disease in a way we haven't been able to before. We see it as a major breakthrough in what will now be possible,'' said Dr Livesey, whose findings are published in the journal Nature Neuroscience.

The cerebral cortex is the part of the brain that is responsible for most of the high-level thought processes such as memory, language and consciousness.

Telegraph, London

See more here:
Scientists grow brain cells from human skin

Eventually they hope the cells could also be used to provide healthy tissue that can be implanted into patients to treat neurodegenerative diseases and brain damage.

Dr Rick Livesey, who led the research at the University of Cambridge's Gurdon [corr] Institute, said: "The cerebral cortex makes up 75% of the human brain, is where all the important processes that make us human take place. It is, however, also the major place where disease can occur.

"We have been able to take reprogrammed skin cells so they develop into brain stem cells and then essentially replay brain development in the laboratory.

"We can study brain development and what goes wrong when it is affected by disease in a way we haven't been able to before. We see it as a major breakthrough in what will now be possible."

The cerebral cortex is the part of the brain that is responsible for most of the major high-level thought processes such as memory, language and consciousness.

While human brain cells have been created from stem cells before, this has relied upon embryonic stem cells. Attempts to make them from skin cells have produced neurons that are not found in the cerebral cortex.

Dr Livesey and his colleagues were able to create the two major types of neuron that form the cerebral cortex from reprogrammed skin cells and show that they were identical to those created from the more controversial embryonic stem cells.

Dr Livesey, whose findings are published in the journal Nature Neuroscience, said this may eventually lead to new treatments for patients where damaged tissue could be replaced by brain cells grown in the laboratory from a sample of their skin.

He said: "You don't need to rebuild damage to recover function as the brain is quite good at recovering itself – it does this after stroke for example. However, it may be possible to give it some extra real estate that it can use to do this.

"We can make large numbers of cerebral cortex neurons by taking a sample of skin from anybody, so in principal it should be possible to put these back into the patients."

Dr Simon Ridley, head of research at Alzheimer's Research UK, which funded the study alongside the Wellcome Trust, added: "Turning stem cells into networks of fully functional nerve cells in the lab holds great promise for unravelling complex brain diseases such as Alzheimer's."

More here:
Human brain cells created from skin

London, Feb 12 (ANI): British scientists have for the first time generated crucial types of human brain cells in the laboratory by reprogramming skin cells, which they say could speed up the hunt for new treatments for conditions such as Alzheimer's disease, epilepsy and stroke.

Until now it has only been possible to generate tissue from the cerebral cortex, the area of the brain where most major neurological diseases occur, by using controversial embryonic stem cells, obtained by the destruction of an embryo.

This has meant the supply of brain tissue available for research has been limited due to the ethical concerns around embryonic stem cells and shortages in their availability.

However, scientists at the University of Cambridge now insist they have overcome this problem after showing for the first time that it is possible to re-programme adult human skin cells so that they develop into neurons found in the cerebral cortex, the Telegraph reported.

Initially brain cells grown in this way could be used to help researchers gain a better understanding of how the brain develops, what goes wrong when it is affected by disease and it could also be used for screening new drug treatments.

Eventually they hope the cells could also be used to provide healthy tissue that can be implanted into patients to treat neurodegenerative diseases and brain damage.

The cerebral cortex is the part of the brain that is responsible for most of the major high-level thought processes such as memory, language and consciousness.

"The cerebral cortex makes up 75 percent of the human brain, is where all the important processes that make us human take place. It is, however, also the major place where disease can occur," said Dr Rick Livesey, who led the research at the University of Cambridge's Gurdon [corr] Institute.

"We have been able to take reprogrammed skin cells so they develop into brain stem cells and then essentially replay brain development in the laboratory.

"We can study brain development and what goes wrong when it is affected by disease in a way we haven't been able to before. We see it as a major breakthrough in what will now be possible," he added.

Dr Livesey and his colleagues were able to create the two major types of neuron that form the cerebral cortex from reprogrammed skin cells and show that they were identical to those created from the more controversial embryonic stem cells.

He said this may eventually lead to new treatments for patients where damaged tissue could be replaced by brain cells grown in the laboratory from a sample of their skin.

"You don't need to rebuild damage to recover function as the brain is quite good at recovering itself - it does this after stroke for example. However, it may be possible to give it some extra real estate that it can use to do this," Dr Livesey said.

"We can make large numbers of cerebral cortex neurons by taking a sample of skin from anybody, so in principal it should be possible to put these back into the patients," he added.

Dr Simon Ridley, head of research at Alzheimer's Research UK, which funded the study alongside the Wellcome Trust, said: "Turning stem cells into networks of fully functional nerve cells in the lab holds great promise for unravelling complex brain diseases such as Alzheimer's."

The findings were published in the journal Nature Neuroscience. (ANI)

Continue reading here:
Brain cells created from human skin

18-01-2012 15:53 Dr. Phillip Levy explains the science behind the revolutionary new Dr.Levy Switzerland anti-aging brand WORLD-RENOWNED ESTHETIC DERMATOLOGY PIONEER LEADING FACIAL REJUVENATION EXPERT // Number 1 Botox private doctor in Switzerland In today's world, nobody wants to look their age anymore, and many people seek to restore their skin's natural beauty. So what is so unique and new about your products? Dr. LEVY Switzerland®'s revolutionary Booster Cream and Booster Serum, are the world's first cosmetics, scientifically proven in vitro, to activate and vitalize both Dermal and Epidermal stem cells. Skin stem cells, it's important to remember, have unique anti-aging properties since they renew themselves as well as repair, replace and regenerate damaged skin. What are the extraordinary scientific advances behind the development of these special products ? In the last 2 years there have been 3 major discoveries involving advanced stem cell technology. One, in Montpellier, France, researchers were able to regenerate 101 year-old skin cells. They proved that not only did skin cells retain the memory of their youth, but that old cells could actually become young again ! Two, cardiologists in the United States published a study showing that the heart could be repaired by stem cells, even after a severe heart attack. And finally, researchers in Toronto Canada discovered the exact location of dermal stem cells, the very cells which are at the source of the skin's natural anti-wrinkle system. So ...

Follow this link:
Dr. Levy Switzerland - Video

Diseases of the cerebral cortex range from developmental conditions, such as epilepsy and autism, to neurodegenerative conditions such as Alzheimer’s.  Today’s findings will enable scientists to study how the human cerebral cortex develops, how it ‘wires up’ and how that can go wrong (a common problem leading to learning disabilities).

It will also allow them to recreate brain diseases, such as Alzheimer’s, in the lab.  This will give them previously impossible insight, allowing them to both watch the diseases develop in real time and also develop and test new drugs to stop the diseases progressing.

Dr. Rick Livesey of the Gurdon Institute and Department of Biochemistry at the University of Cambridge, principal investigator of the research, said: “This approach gives us the ability to study human brain development and disease in ways that were unimaginable even five years ago.”

For their research, the scientists took skin biopsies from patients and then reprogrammed the cells from the skin samples back into stem cells.  These stem cells as well as human embryonic stem cells were then used to generate cerebral cortex cells.

Dr. Livesey added: “We are using this system to recreate Alzheimer’s disease in the lab. Alzheimer’s disease is the commonest form of dementia in the world, and dementia currently affects over 800,000 people in the UK. It’s a disease that primarily affects the type of nerve cell we’ve made in the lab, so we’ve the perfect tool to create a full, human model of the disease in the lab.”

Dr. Simon Ridley, Head of Research at Alzheimer’s Research UK, the UK’s leading dementia research charity, said: “We are really pleased to have contributed funding for this work and the results are a positive step forward. Turning stem cells into networks of fully functional nerve cells in the lab holds great promise for unravelling complex brain diseases such as Alzheimer’s.

“Dementia is the greatest medical challenge of our time – we urgently need to understand more about the condition and how to stop it. We hope these findings can move us closer towards this goal.”

Provided by University of Cambridge (news : web)

More:
Brain cells created from patients' skin cells

SACRAMENTO — A research team led by UC Davis Health System scientists has developed a novel technique to enhance bone growth by using a molecule which, when injected into the bloodstream, directs the body's stem cells to travel to the surface of bones. Once these cells are guided to the bone surface by this molecule, the stem cells differentiate into bone-forming cells and synthesize proteins to enhance bone growth. The study, which was published online today in Nature Medicine, used a mouse model of osteoporosis to demonstrate a unique treatment approach that increases bone density and prevents bone loss associated with aging and estrogen deficiency.

"There are many stem cells, even in elderly people, but they do not readily migrate to bone," said Wei Yao, the principal investigator and lead author of the study. "Finding a molecule that attaches to stem cells and guides them to the targets we need is a real breakthrough."

Researchers are exploring stem cells as possible treatments for a wide variety of conditions and injuries, ranging from peripheral artery disease and macular degeneration to blood disorders, skin wounds and diseased organs. Directing stem cells to travel and adhere to the surface of bone for bone formation has been among the elusive goals in regenerative medicine.

The researchers made use of a unique hybrid molecule, LLP2A-alendronate, developed by a research team led by Kit Lam, professor and chair of the UC Davis Department of Biochemistry and Molecular Medicine. The researchers' hybrid molecule consists of two parts: the LLP2A part that attaches to mesenchymal stem cells in the bone marrow, and a second part that consists of the bone-homing drug alendronate. After the hybrid molecule was injected into the bloodstream, it picked up mesenchymal stem cells in the bone marrow and directed those cells to the surfaces of bone, where the stem cells carried out their natural bone-formation and repair functions.

"Our study confirms that stem-cell-binding molecules can be exploited to direct stem cells to therapeutic sites inside an animal," said Lam, who also is an author of the article. "It represents a very important step in making this type of stem cell therapy a reality."

Twelve weeks after the hybrid molecule was injected into mice, bone mass in the femur (thigh bone) and vertebrae (in the spine) increased and bone strength improved compared to control mice who did not receive the hybrid molecule. Treated mice that were normally of an age when bone loss would occur also had improved bone formation, as did those that were models for menopause.

Alendronate, also known by the brand name Fosamax, is commonly taken by women with osteoporosis to reduce the risk of fracture. The research team incorporated alendronate into the hybrid molecules because once in the bloodstream, it goes directly to the bone surface, where it slows the rate of bone breakdown. According to Nancy Lane, a co-investigator on the study and director of the UC Davis Musculoskeletal Diseases of Aging Research Group, the dose of alendronate in the hybrid compound was low and unlikely to have inhibited the compound's therapeutic effect.

"For the first time, we may have potentially found a way to direct a person's own stem cells to the bone surface where they can regenerate bone," said Lane, who is an Endowed Professor of Medicine and Rheumatology and an expert on osteoporosis. "This technique could become a revolutionary new therapy for osteoporosis as well as for other conditions that require new bone formation."

Osteoporosis is a major public health problem for 44 million Americans. One in two women will suffer a fracture due to osteoporosis in their lifetime. Although effective medications are available to help prevent fracture risk, including alendronate, their use is limited by potential harmful effects of long-term use.

The major causes for osteoporosis in women include estrogen deficiency, aging and steroid excess from treatment of chronic inflammatory conditions such as rheumatoid arthritis. Generally, the osteoporosis generated by these metabolic conditions results from change in the bone remodeling cycle that weakens the bone's architecture and increases fracture risk.

Mesenchymal stem cells from bone marrow induce new bone remodeling, which thicken and strengthen bone.

The authors noted that the potential use of this stem cell therapy is not limited to treating osteoporosis. They said it may prove invaluable for other disorders and conditions that could benefit from enhanced bone rebuilding, such as bone fractures, bone infections or cancer treatments.

"These results are very promising for translating into human therapy," said Jan Nolta, professor of internal medicine, an author of the study and director of the UC Davis Institute for Regenerative Cures. "We have shown this potential therapy is effective in rodents, and our goal now is to move it into clinical trials."

Funding for the study came from the Endowment on Healthy Aging and the National Institutes of Health. The California Institute for Regenerative Medicine has given the team a planning grant to develop a proposal for human clinical trials.

"This research was a collaboration of stem cell biologists, biochemists, translational scientists, a bone biologist and clinicians," said Lane. "It was a truly fruitful team effort with remarkable results."

The Nature Medicine article is titled "Directing mesenchymal stem cells to bone to augment bone formation and increase bone mass." Min Guan, who is affiliated with the UC Davis Department of Internal Medicine, was co-lead author of the paper. Other UC Davis authors were Ruiwu Liu, Junjing Jia, Liping Meng, Ping Zhou and Mohammad Shahnazari, from the departments of Internal Medicine, and Biochemistry and Molecular Medicine, as well as the UC Davis Institute for Regenerative Cures. Authors Brian Panganiban and Robert O. Ritchie are with the Department of Materials Science and Engineering at UC Berkeley.

UC Davis is playing a leading role in regenerative medicine, with nearly 150 scientists working on a variety of stem cell-related research projects at campus locations in both Davis and Sacramento. The UC Davis Institute for Regenerative Cures, a facility supported by the California Institute for Regenerative Medicine (CIRM), opened in 2010 on the Sacramento campus. This $62 million facility is the university's hub for stem cell science. It includes Northern California's largest academic Good Manufacturing Practice laboratory, with state-of-the-art equipment and manufacturing rooms for cellular and gene therapies. UC Davis also has a Translational Human Embryonic Stem Cell Shared Research Facility in Davis and a collaborative partnership with the Institute for Pediatric Regenerative Medicine at Shriners Hospital for Children Northern California. All of the programs and facilities complement the university's Clinical and Translational Science Center, and focus on turning stem cells into cures. For more information, visit http://www.ucdmc.ucdavis.edu/stemcellresearch.

Read the original here:
Directing stem cells to boost bone formation, strength

ScienceDaily (Feb. 6, 2012) — A University of Minnesota-led research team has proposed a mechanism for the control of whether embryonic stem cells continue to proliferate and stay stem cells, or differentiate into adult cells like brain, liver or skin.

The work has implications in two areas. In cancer treatment, it is desirable to inhibit cell proliferation. But to grow adult stem cells for transplantation to victims of injury or disease, it would be desirable to sustain proliferation until a sufficient number of cells have been produced to make a usable organ or tissue.

The study gives researchers a handle on how those two competing processes might be controlled. It was performed at the university's Hormel Institute in Austin, Minn., using mouse stem cells. The researchers, led by Hormel Institute Executive Director Zigang Dong and Associate Director Ann M. Bode, have published a report in the journal Nature: Structure and Molecular Biology.

"This is breakthrough research and provides the molecular basis for development of regenerative medicine," said Dong. "This research will aid in the development of the next generation of drugs that make repairs and regeneration within the body possible following damage by such factors as cancer, aging, heart disease, diabetes, or paralysis caused by traumatic injury."

The mechanism centers on a protein called Klf4, which is found in embryonic stem cells and whose activities include keeping those cells dividing and proliferating rather than differentiating. That is, Klf4 maintains the character of the stem cells; this process is called self-renewal. The researchers discovered that two enzymes, called ERK1 and ERK2, inactivate Klf; this allows the cells to begin differentiating into adult cells.

The two enzymes are part of a "bucket brigade" of signals that starts when a chemical messenger arrives from outside the embryonic stem cells. Chemical messages are passed to inside the cells, resulting in, among other things, the two enzymes swinging into action.

The researchers also discovered how the enzymes control Klf4. They attach a small molecule--phosphate, consisting of phosphorus and oxygen--to Klf4. This "tag" marks it for destruction by the cellular machinery that recycles proteins.

Further, they found that suppressing the activity of the two enzymes allows the stem cells to maintain their self-renewal and resist differentiation. Taken together, their findings paint a picture of the ERK1 and ERK2 enzymes as major players in deciding the future of embryonic stem cells--and potentially cancer cells, whose rapid growth mirrors the behavior of the stem cells.

Klf4 is one of several factors used to reprogram certain adult skin cells to become a form of stem cells called iPS (induced pluripotent stem) cells, which behave similarly to embryonic stem cells. Also, many studies have shown that Klf4 can either activate or repress the functioning of genes and, in certain contexts, act as either an oncogene (that promotes cancer) or a tumor suppressor. Given these and their own findings reported here, the Hormel Institute researchers suggest that the self-renewal program of cancer cells might resemble that of embryonic stem cells.

"Although the functions of Klf4 in cancer are controversial, several reports suggest Klf4 is involved in human cancer development," Bode said.

Recommend this story on Facebook, Twitter,
and Google +1:

Other bookmarking and sharing tools:

Story Source:

The above story is reprinted from materials provided by University of Minnesota.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.

Journal Reference:

Myoung Ok Kim, Sung-Hyun Kim, Yong-Yeon Cho, Janos Nadas, Chul-Ho Jeong, Ke Yao, Dong Joon Kim, Dong-Hoon Yu, Young-Sam Keum, Kun-Yeong Lee, Zunnan Huang, Ann M Bode, Zigang Dong. ERK1 and ERK2 regulate embryonic stem cell self-renewal through phosphorylation of Klf4. Nature Structural & Molecular Biology, 2012; DOI: 10.1038/nsmb.2217

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Link:
Key finding in stem cell self-renewal

SAN FRANCISCO, CA ( Ivanhoe Newswire) -- Stem cells, they could hold the key to the treatment and cure of more than 70 major diseases and conditions. A science  lab is taking stem cell technology another step into the future.

From broken hearts.

"One artery was completely blocked," Elmer Goodman, a heart disease patient, told Ivanhoe.

To severed spines.

"It was just like somebody took a tarp from the bottom of my neck and just peeled it back and took all the feeling from me," John Miksa, who is paralyzed, said.

To damaged brains.

"I was going to be drooling on a bib, in a wheelchair for the rest of my life," Erwin Velbis, a stroke survivor, said.

The answer to heal them all may be found inside a lab.

"We had a major breakthrough," Deepak Srivastava, M.D., from the Gladstone Institute of Cardiovascular Disease, said.

Doctor Deepak Srivastava and doctor Sheng Ding are two of the many  minds at Gladstone Institute using not adult stem cells or embryonic stem cells, but your own skin cells to repair bodies from the inside out.

"It means in the future one might be able to create new heart cells, new lung cells, new spinal cord cells, starting with your own cells from your skin," Dr. Srivastava said.

Doctor Srivastava is taking adult skin cells, and turning them into beating heart cells.  It's called direct reprogramming.

"We've been able to create a beating heart cells that used to be on someone's skinwhich is really like science fiction," Dr. Srivastava said.

The same approach could be used to repair spinal cord injuries and practically any other part of the body.

"We've been working on new methods that can convert cells from the skin to brain cells," Sheng Ding, Ph.D., at the Gladstone institute, said.

Doctor Ding has transformed the adult skin cells into neurons that are capable of transmitting brain signals. They hope this could reverse the effects of Alzheimer's, Parkinson's and stroke.

"It's the ultimate in personalized medicine," Dr. Srivastava said.

Doctors say because they're using a patient's own skin cells, there's little to no chance of rejection. These skin cells could also be used to test new drugs and each patient's possible response to those drugs.  Allowing doctors to better personalize medicine. MORE

More Information

Click here for additional research on Skin Cells as Stem Cells! Medicine's Next Big Thing

Click here for Ivanhoe's full-length interview with Dr. Deepak Srivastava

If this story or any other Ivanhoe story has impacted your life or prompted you or someone you know to seek or change treatments, please let us know by contacting Marsha Hitchcock at mhitchcock@ivanhoe.com

Link:
Skin Cells as Stem Cells! Medicine's Next Big Thing

Washington, Feb 1 (IANS) Scientists have successfully converted mouse skin cells directly into cells that become the three main parts of the nervous system, bypassing the stem cell stage, throwing up many new possibilities in the medical world.

This new study is a substantial advance over the previous paper in that it transforms the skin cells into neural precursor cells, as opposed to neurons.

While neural precursor cells can differentiate into neurons, they can also become the two other main cell types in the nervous system: astrocytes and oligodendrocytes.

The finding is an extension of a previous study by the same group from the Stanford University School of Medicine, showing that mouse and human skin cells can be turned into functional neurons or brain cells.

The multiple successes of the direct conversion method overrides the idea that pluripotency (the ability of stem cells to become nearly any cell) is necessary for a cell to transform from one type to another, the journal Proceedings of the National Academy of Sciences reports.

"We are thrilled about the prospects for potential medical use of these cells," said Marius Wernig, study co-author and assistant professor of pathology and member, Stanford's Institute for Stem Cell Biology and Regenerative Medicine, according to a Stanford statement.

Beside their greater versatility, the newly derived neural precursor cells offer another advantage over neurons because they can be cultivated in large numbers in the lab, a feature critical for their long-term usefulness in transplantation or drug screening.

"We've shown the cells can integrate into a mouse brain and produce a missing protein important for the conduction of electrical signal by the neurons," said Wernig, who co-authored the study with graduate student Ernesto Lujan.

-Indo-Asian News Service

st/pg/vm

Read more from the original source:
Some nerve! Now bypass stem cells

Bypassing stem cells, mouse skin cells have been converted directly into cells that become the three main parts of the animal's nervous system, according to new research at the Stanford University School of Medicine.

The startling success of this method seems to refute the idea that "pluripotency" -- the ability of stem cells to become nearly any cell in the body -- is necessary for a cell to transform from one cell type to another.

It raises the possibility that embryonic stem cell research, as well as a related technique called "induced pluripotency," could be supplanted by a more direct way of generating cells for therapy or research.

"Not only do these cells appear functional in the laboratory, they also seem to be able to integrate ... in an animal model," said lead author and graduate student Ernesto Lujan.

The study was published online Jan. 30 in the Proceedings of the National Academy of Sciences.

The finding implies that it may one day be possible to generate a variety of neural-system cells for transplantation that would perfectly match a human patient.

While much research has been devoted to harnessing the potential of embryonic stem cells, taking those cells from an embryo and then implanting them in a patient could prove difficult because they would not match genetically.

The Stanford team is working to replicate the work with skin cells from adult mice and humans.

But Lujan emphasized that

much more research is needed before any human transplantation experiments could be conducted.

In the meantime, however, the ability to quickly and efficiently generate cells -- grown in mass quantities in the laboratory, and maintained over time -- will be valuable in disease and drug-targeting studies.

Contact Lisa M. Krieger at 408-920-5565.

See the original post here:
Stanford scientists bypass stem cells to create nervous system cells