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Nobel awarded for stem cell, early cloning work

Posted: October 9, 2012 at 11:17 am

NEW YORK (AP) Two scientists from different generations won the Nobel Prize in medicine Monday for the groundbreaking discovery that cells in the body can be reprogrammed into completely different kinds, work that reflects the mechanism behind cloning and offers an alternative to using embryonic stem cells.

The work of British researcher John Gurdon and Japanese scientist Shinya Yamanaka who was born the year Gurdon made his discovery holds hope for treating diseases like Parkinson's and diabetes by growing customized tissue for transplant.

And it has spurred a new generation of laboratory studies into other illnesses, including schizophrenia, which may lead to new treatments.

Basically, Gurdon, 79, and Yamanaka, 50, showed how to make the equivalent of embryonic stem cells without the ethical questions those very versatile cells pose, a promise scientists are now scrambling to fulfill.

Once created, these "blank slate" cells can be nudged toward developing into other cell types. Skin cells can ultimately be transformed into brain cells, for example.

Just last week, scientists reported turning skin cells from mice into eggs that produced baby mice, a possible step toward new fertility treatments.

Gurdon and Yamanaka performed "courageous experiments" that challenged scientific opinion, said Doug Melton, co-director of the Harvard Stem Cell Institute.

"Their work shows ... that while cells might be specialized to do one thing, they have the potential to do something else," Melton said. It "really lays the groundwork for all the excitement about stem cell biology."

Another Harvard stem cell researcher, Dr. George Daley said, "I don't think anybody is surprised" by the award announcement. "The fact that these two share it together is inspired."

In announcing the $1.2 million award, the Nobel committee at Stockholm's Karolinska Institute said the work has "revolutionized our understanding of how cells and organisms develop."

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US team aim to make human sperm

Posted: October 9, 2012 at 11:17 am

8 October 2012 Last updated at 22:25 ET By Regan Morris BBC News, Los Angeles

US researchers say they will redouble their efforts to create human sperm from stem cells following the success of a Japanese study involving mice.

A Kyoto University team used mice stem cells to create eggs, which were fertilised to produce baby mice.

Dr Renee Pera, of Stanford University in California, aims to create human sperm to use for reproduction within two years, and eggs within five years.

Infertility affects up to 15% of reproductive-aged couples worldwide.

"I know people think it's Frankenstein medicine, but I think it's not an imagined or lessened health problem - infertility affects your whole life," Dr Pera says.

"To have sex and have a baby would be a super simple decision, but not everybody can do it."

But using embryonic stem cells for research - as Dr Pera's lab at the Institute for Stem Cell Biology and Regenerative Medicine does - is controversial because the embryos are destroyed in order to use them.

Dr Pera's lab uses embryos left over from IVF treatments.

Stem cells have the potential to grow into any cell in the body. Creating eggs in a lab could become mainstream, much like IVF is viewed today.

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Stem Cell Scientists Awarded Nobel Prize in Physiology and Medicine

Posted: October 9, 2012 at 11:17 am

Kyodo / Reuters

Kyoto University Professor Shinya Yamanaka (left) and John Gurdon of the Gurdon Institute in Cambridge, England, at a symposium on induced pluripotent stem cells in Tokyo in April 2008

In a testament to the revolutionary potential of the field of regenerative medicine, in which scientists are able to create and replace any cells that are at fault in disease, the Nobel Prize committee on Monday awarded the 2012 Nobel in Physiology or Medicine to two researchers whose discoveries have made such cellular alchemy possible.

The prize went to John B. Gurdon of the University of Cambridge in England, who was the first to clone an animal, a frog, in 1962, and to Shinya Yamanaka of Kyoto University in Japan who in 2006 discovered the four genes necessary to reprogram an adult cell back to an embryonic state.

Sir John Gurdon, who is now a professor at an institute that bears his name, earned the ridicule of many colleagues back in the 1960s when he set out on a series of experiments to show that the development of cells could be reversed. At the time, biologists knew that all cells in an embryo had the potential to become any cell in the body, but they believed that once a developmental path was set for each cell toward becoming part of the brain, or a nerve or muscle it could not be returned to its embryonic state. The thinking was that as a cell developed, it would either shed or silence the genes it no longer used, so that it would be impossible for a cell from an adult animal, for example, to return to its embryonic state and make other cells.

(MORE: Stem Cell Miracle? New Therapies May Cure Chronic Conditions Like Alzheimers)

Working with frogs, Gurdon proved his critics wrong, showing that some reprogramming could occur. Gurdon took the DNA from a mature frogs gut cell and inserted it into an egg cell. The resulting egg, when fertilized, developed into a normal tadpole, a strong indication that the genes of the gut cell were amenable to reprogramming; they had the ability to function as more than just an intestinal cell, and could give rise to any of the cells needed to create an entirely new frog.

Just as Gurdon was facing his critics in England, a young boy was born in Osaka, Japan, who would eventually take Gurdons finding to unthinkable extremes. Initially, Shinya Yamanaka would follow his fathers wishes and become an orthopedic surgeon, but he found himself ill-suited to the surgeons life. Intrigued more by the behind-the-scenes biological processes that make the body work, he found himself drawn to basic research, and began his career by trying to find a way to lower cholesterol production. That work also wasnt successful, but it drew him to the challenge of understanding what makes cells divide, proliferate and develop in specific ways.

In 2006, while at Kyoto University, Yamanaka stunned scientists by announcing he had successfully achieved what Gurdon had with the frog cells, but without using eggs at all. Yamanaka mixed four genes in with skin cells from adult mice and turned those cells back to an embryo-like state, essentially erasing their development and turning back their clock. The four genes reactivated other genes that are prolific in the early embryo, and turned off those that directed the cells to behave like skin.

(MORE: Ovary Stem Cells Can Produce New Human Eggs)

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Regenerative Medicine Biotech Company, Eqalix, Names Scientific Advisory Board

Posted: October 9, 2012 at 11:17 am

Eqalix Inc., an emerging regenerative medicine company, announces its Scientific Advisory Board (SAB). This SAB gives Eqalix a depth and breadth of experience necessary to take it to the next level.

Reston, VA (PRWEB) October 09, 2012

"We are very pleased to bring together these key thought leaders to establish the Eqalix Scientific Advisory Board," stated Joseph P. Connell, Eqalix CEO and Chairman of the Board. "I have worked with Drs. Gold and Goldman for years and have always admired their abilities. Dr Lelkes technologies will make a profound impact upon aesthetic dermatology, wound healing and regenerating blood vessels, nerve endings and damaged organs with the guidance of this distinguished panel. It is not clich in any manner when I say that we are thrilled to work with this team. We look to their guidance, industry knowledge and network to help deliver these therapies into clinic and prospective patients as soon as possible, as I am confident our technologies will make a difference, said Connell.

The members of the Eqalix Scientific Advisory Board are:

Peter I. Lelkes, PhD: Chief Scientific Advisor; Dr. Lelkes is the Laura H. Carnell Professor and Founding Chair of the Department of Bioengineering in the College of Engineering at Temple University and the Inaugural Director of the Institute for Regenerative Medicine and Engineering (TIME) at Temple Universitys School of Medicine. While at Drexel, Prof. Lelkes directed an interdisciplinary program in tissue engineering and regenerative medicine, focusing on nanotechnology-based biomaterials and soft tissue engineering, employing developmental biological principles to enhance the tissue-specific differentiation of embryonic and adult stem cells. Dr. Lelkes has organized several Keystone conferences and published more than 160 peer-reviewed papers and 45 book chapters and made more than 400 presentations nationally and internationally.

Dr. Lelkes basic and translational research has been support by federal (NIH, NSF, NASA, DOE) and state funding agencies, (NTI and Dept. of Commerce, Tobacco Settlement Funds) and private Foundations, including the Coulter Foundation. Most recently, Dr. Lelkes has been named Director of the Surgical Engineering Enterprise, one of the major initiatives of the strategic plan of Drexel Universitys College of Medicine. In addition, Dr. Lelkes has been the team leader for tissue engineering at the Nanotechnology Institute of Southeastern Pennsylvania (NTI) and is the Co-Director of PATRIC, the Pennsylvania Advanced Textile Research and Innovation Center, focusing on BioNanoTextiles and Stem Cell Biology.

Dr Lelkes stated, "I am delighted and excited to partner with Eqalix to translate our inventions from the bench to the bedside in a timely fashion.

Mitchel P. Goldman, MD, Scientific Advisor, Founder and Medical Director of Goldman Butterwick Fitzpatrick, Groff & Fabi, Cosmetic Laser Dermatology. A graduate of Boston University, Summa Cum Laude, and the Stanford University Medical School, Dr. Goldman is a Volunteer Clinical Professor in Medicine/Dermatology at the University of California, San Diego. Dr Goldman is Board Certified by both the American Board of Dermatology and the American Board of Cosmetic Surgery.

He is a fellow of the American Academy of Dermatology, American Society for Dermatologic Surgery, American Society for Laser Medicine and Surgery, American Academy of Cosmetic Surgery and the American Society of Liposuction Surgery. He is former President of the American College of Phlebology and President-Elect of the American Society for Dermatologic Surgery. He presently serves on the Board of Trustees for the American Academy of Cosmetic Surgery. He also has authored and/or co-authored 21 Textbooks on Dermatology, Sclerotherapy, Ambulatory Phlebectomy, Cutaneous Laser Surgery, Cellulite and Dermatologic Surgery as well as over 300 peer-reviewed publications and textbook chapters.

Dr Goldman added: I am very interested and excited to work with the Eqalix team to make these technologies a success. I believe that my background lends well to truly shaping the successful commercialization of these products for my patients to improve outcomes.

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Stem Cell Scientists Gurdon and Yamanaka Win Nobel Prize in Medicine

Posted: October 9, 2012 at 11:13 am

JUDY WOODRUFF: Next, to the 2012 Nobel Prizes. The first was awarded today for groundbreaking work in reprogramming cells in the body.

Ray Suarez looks at those achievements.

MAN: The Nobel Assembly at Karolinska Institute has today decided to award the Nobel Prize in Physiology or Medicine,2012 jointly to John B. Gurdon and Shinya Yamanaka.

RAY SUAREZ: The two scientists are from two different generations and celebrated today's announcement half-a-world apart.

But today they were celebrated together for their research that led to a groundbreaking understanding of how cells work.

Sir John Gurdon of CambridgeUniversity was awarded for his work in 1962. He was able to use specialized cells of frogs, like skin or intestinal cells, to generate new tadpoles and show DNA could drive the formation of all cells in the body.

Forty years later, Dr. Yamanaka built on that and went further. He was able to turn mature cells back into their earliest form as primitive cells. Those cells are in many ways the equivalent of embryonic stem cells, because they have the potential to develop into specialized cells for heart, liver and other organs.

Dr. Shinya Yamanaka is currently working at KyotoUniversity. Embryonic stem cells have had to be harvested from human embryos, a source of debate and considerable controversy.

For Gurdon, the prize had special meaning. At a news conference in London, he recalled one schoolteacher's reaction to his desire to study science.

JOHN GURDON, co-winner, Nobel Prize For Medicine or Physiology: It was a completely ridiculous idea because there was no hope whatever of my doing science, and any time spent on it would be a total waste of time, both on my part and the part of the person having to teach him. So that terminated my completely -- completely terminated my science at school.

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Stem Cell Scientists Gurdon and Yamanaka Win Nobel Prize in Medicine

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Cell rewind wins medicine Nobel

Posted: October 9, 2012 at 11:13 am

John Gurdon (left) and Shinya Yamanaka showed how to reprogram cells into their embryonic states.

J. Player/Rex Features; Aflo/Rex Features

The discovery that cells can be reprogrammed to an embryonic-like state has won this years Nobel Prize in Physiology or Medicine for two leading lights of stem-cell research: John Gurdon and Shinya Yamanaka.

Reprogrammed cells regain pluripotency, the potential to differentiate into many mature cell types. Many researchers hope that cells created in this way will eventually be used in regenerative medicine, providing replacement tissue for damaged or diseased organs. The field has become one of the hottest in biology, but the prizewinners discoveries were not without controversy when they were made.

Gurdon, who is based at the Gurdon Institute in Cambridge, UK, was the first person to demonstrate that cells could be reprogrammed, in work published 50years ago1. At the time, scientists believed that cellular specialization was a one-way process that could not be reversed. Gurdon overturned that dogma by removing the nucleus from a frog egg cell and replacing it with the nucleus from a tadpoles intestinal cell. Remarkably, the process was able to turn back the cellular clock of the substitute nucleus. Although it had already committed to specialization, inside the egg cell it acted like an eggs nucleus and directed the development of a normal tadpole.

Gurdon was a graduate student at the University of Oxford, UK, when he did the work. He received his doctorate in 1960 and went on to do a postdoc at the California Institute of Technology in Pasadena, leaving his frogs in Europe. He did not publish the research until two years after he got his PhD, once he was sure that the animals had matured healthily. I was a graduate student flying in the face of [established] knowledge, he says. There was a lot of scepticism.

Mammalian cells did not prove as amenable to this process, known as cloning by nuclear transfer, as frog cells. It was nearly 35years before the first cloned mammal Dolly the sheep was born, in 1996. Dolly was the only live birth from 277 attempts, and mammalian cloning remained a hit-and-miss affair.

Scientists were desperate to improve the efficiency of the system and to understand the exact molecular process involved. That is where Shinya Yamanaka of Kyoto University, Japan, made his mark. Yamanaka who was born the year that Gurdon published his formative paper used cultured mouse cells to identify the genes that kept embryonic cells immature, and then tested whether any of these genes could reprogram mature cells to make them pluripotent.

In the mid-2000s, the stem-cell community knew that Yamanaka was close. I remember when he presented the data at a 2006 Keystone symposium, says Cdric Blanpain, a stem-cell biologist at the Free University of Brussels. At that time he didnt name them and everyone was betting what these magic factors could be.

A few months later, attendees at the 2006 meeting of the International Society for Stem Cell Research in Toronto, Canada, packed out Yamanakas lecture. The audience waited in silence before he announced his surprisingly simple recipe: activating just four genes was enough to turn adult cells called fibroblasts back into pluripotent stem cells2. Such induced pluripotent stem (iPS) cells could then be coaxed into different types of mature cell types, including nerve and heart cells.

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Cell rewind wins medicine Nobel

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Fingers crossed at AIIMS after stem cell transplant for MS, first in country

Posted: October 9, 2012 at 11:13 am

Doctors at the All India Institute of Medical Sciences (AIIMS) have conducted a stem cell transplant on a multiple sclerosis (MS) patient. They believe this is the first recorded case of an autologous stem cell therapy where the donor and recipient are the same person for MS in the country.

Six months after the transplant, doctors say the spread of MS, an autoimmune disease that affects the brain and spinal cord, appears to have been contained but the therapy cannot be declared a success until the patient is monitored for at least a year.

International trials have demonstrated that this transplant can restrict the spread of the disease in advanced patients, and may even reverse symptoms in early stages in some patients.

Thirty-two-year-old Rohit Yadav, a commerce graduate from Delhi University, was diagnosed with the neurological disorder in 2010. In March this year, after trying all possible conventional treatment options, doctors at AIIMS finally decided on stem cell therapy.

Dr Kameshwar Prasad, professor of neurology who has been monitoring Yadav, said: The primary purpose of autologous stem cell transplant is to control the spread of lesions. We extract the patients own stem cells, treat and inject the stem cells back. Ever since the procedure, the patient has been completely stable. To the best of our knowledge, this is the first case of stem cell therapy for MS.

In MS, the bodys own immune system attacks the myelin sheath that coats nerves, slowly destroying the central nervous system. Symptoms range from numbness and weakness in the limbs to sudden loss of balance and coordination, blurred vision and paralysis and, at the most advanced stage, disability.

... contd.

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Stem Cell Scientists Gurdon and Yamanaka Win Nobel Prize in Medicine

Posted: October 9, 2012 at 8:15 am

JUDY WOODRUFF: Next, to the 2012 Nobel Prizes. The first was awarded today for groundbreaking work in reprogramming cells in the body.

Ray Suarez looks at those achievements.

MAN: The Nobel Assembly at Karolinska Institute has today decided to award the Nobel Prize in Physiology or Medicine,2012 jointly to John B. Gurdon and Shinya Yamanaka.

RAY SUAREZ: The two scientists are from two different generations and celebrated today's announcement half-a-world apart.

But today they were celebrated together for their research that led to a groundbreaking understanding of how cells work.

Sir John Gurdon of CambridgeUniversity was awarded for his work in 1962. He was able to use specialized cells of frogs, like skin or intestinal cells, to generate new tadpoles and show DNA could drive the formation of all cells in the body.

Forty years later, Dr. Yamanaka built on that and went further. He was able to turn mature cells back into their earliest form as primitive cells. Those cells are in many ways the equivalent of embryonic stem cells, because they have the potential to develop into specialized cells for heart, liver and other organs.

Dr. Shinya Yamanaka is currently working at KyotoUniversity. Embryonic stem cells have had to be harvested from human embryos, a source of debate and considerable controversy.

For Gurdon, the prize had special meaning. At a news conference in London, he recalled one schoolteacher's reaction to his desire to study science.

JOHN GURDON, co-winner, Nobel Prize For Medicine or Physiology: It was a completely ridiculous idea because there was no hope whatever of my doing science, and any time spent on it would be a total waste of time, both on my part and the part of the person having to teach him. So that terminated my completely -- completely terminated my science at school.

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Stem Cell Scientists Gurdon and Yamanaka Win Nobel Prize in Medicine

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Regenerative Medicine Biotech Company, Eqalix, Names Scientific Advisory Board

Posted: October 9, 2012 at 8:14 am

Eqalix Inc., an emerging regenerative medicine company, announces its Scientific Advisory Board (SAB). This SAB gives Eqalix a depth and breadth of experience necessary to take it to the next level.

Reston, VA (PRWEB) October 09, 2012

"We are very pleased to bring together these key thought leaders to establish the Eqalix Scientific Advisory Board," stated Joseph P. Connell, Eqalix CEO and Chairman of the Board. "I have worked with Drs. Gold and Goldman for years and have always admired their abilities. Dr Lelkes technologies will make a profound impact upon aesthetic dermatology, wound healing and regenerating blood vessels, nerve endings and damaged organs with the guidance of this distinguished panel. It is not clich in any manner when I say that we are thrilled to work with this team. We look to their guidance, industry knowledge and network to help deliver these therapies into clinic and prospective patients as soon as possible, as I am confident our technologies will make a difference, said Connell.

The members of the Eqalix Scientific Advisory Board are:

Peter I. Lelkes, PhD: Chief Scientific Advisor; Dr. Lelkes is the Laura H. Carnell Professor and Founding Chair of the Department of Bioengineering in the College of Engineering at Temple University and the Inaugural Director of the Institute for Regenerative Medicine and Engineering (TIME) at Temple Universitys School of Medicine. While at Drexel, Prof. Lelkes directed an interdisciplinary program in tissue engineering and regenerative medicine, focusing on nanotechnology-based biomaterials and soft tissue engineering, employing developmental biological principles to enhance the tissue-specific differentiation of embryonic and adult stem cells. Dr. Lelkes has organized several Keystone conferences and published more than 160 peer-reviewed papers and 45 book chapters and made more than 400 presentations nationally and internationally.

Dr. Lelkes basic and translational research has been support by federal (NIH, NSF, NASA, DOE) and state funding agencies, (NTI and Dept. of Commerce, Tobacco Settlement Funds) and private Foundations, including the Coulter Foundation. Most recently, Dr. Lelkes has been named Director of the Surgical Engineering Enterprise, one of the major initiatives of the strategic plan of Drexel Universitys College of Medicine. In addition, Dr. Lelkes has been the team leader for tissue engineering at the Nanotechnology Institute of Southeastern Pennsylvania (NTI) and is the Co-Director of PATRIC, the Pennsylvania Advanced Textile Research and Innovation Center, focusing on BioNanoTextiles and Stem Cell Biology.

Dr Lelkes stated, "I am delighted and excited to partner with Eqalix to translate our inventions from the bench to the bedside in a timely fashion.

Mitchel P. Goldman, MD, Scientific Advisor, Founder and Medical Director of Goldman Butterwick Fitzpatrick, Groff & Fabi, Cosmetic Laser Dermatology. A graduate of Boston University, Summa Cum Laude, and the Stanford University Medical School, Dr. Goldman is a Volunteer Clinical Professor in Medicine/Dermatology at the University of California, San Diego. Dr Goldman is Board Certified by both the American Board of Dermatology and the American Board of Cosmetic Surgery.

He is a fellow of the American Academy of Dermatology, American Society for Dermatologic Surgery, American Society for Laser Medicine and Surgery, American Academy of Cosmetic Surgery and the American Society of Liposuction Surgery. He is former President of the American College of Phlebology and President-Elect of the American Society for Dermatologic Surgery. He presently serves on the Board of Trustees for the American Academy of Cosmetic Surgery. He also has authored and/or co-authored 21 Textbooks on Dermatology, Sclerotherapy, Ambulatory Phlebectomy, Cutaneous Laser Surgery, Cellulite and Dermatologic Surgery as well as over 300 peer-reviewed publications and textbook chapters.

Dr Goldman added: I am very interested and excited to work with the Eqalix team to make these technologies a success. I believe that my background lends well to truly shaping the successful commercialization of these products for my patients to improve outcomes.

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Regenerative Medicine Biotech Company, Eqalix, Names Scientific Advisory Board

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Fingers crossed at AIIMS after stem cell transplant for MS, first in country

Posted: October 9, 2012 at 8:13 am

Doctors at the All India Institute of Medical Sciences (AIIMS) have conducted a stem cell transplant on a multiple sclerosis (MS) patient. They believe this is the first recorded case of an autologous stem cell therapy where the donor and recipient are the same person for MS in the country.

Six months after the transplant, doctors say the spread of MS, an autoimmune disease that affects the brain and spinal cord, appears to have been contained but the therapy cannot be declared a success until the patient is monitored for at least a year.

International trials have demonstrated that this transplant can restrict the spread of the disease in advanced patients, and may even reverse symptoms in early stages in some patients.

Thirty-two-year-old Rohit Yadav, a commerce graduate from Delhi University, was diagnosed with the neurological disorder in 2010. In March this year, after trying all possible conventional treatment options, doctors at AIIMS finally decided on stem cell therapy.

Dr Kameshwar Prasad, professor of neurology who has been monitoring Yadav, said: The primary purpose of autologous stem cell transplant is to control the spread of lesions. We extract the patients own stem cells, treat and inject the stem cells back. Ever since the procedure, the patient has been completely stable. To the best of our knowledge, this is the first case of stem cell therapy for MS.

In MS, the bodys own immune system attacks the myelin sheath that coats nerves, slowly destroying the central nervous system. Symptoms range from numbness and weakness in the limbs to sudden loss of balance and coordination, blurred vision and paralysis and, at the most advanced stage, disability.

... contd.

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