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October 2009
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Reprogramming a Patient's Eye Cells May Herald New Treatments Against Degenerative Disease |
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20 October 2009 Wiley - Blackwell
Scientists have overcome a key barrier to the clinical use of stem cells with a technique which transforms regular body cells into artificial stem cells without the need for introducing foreign genetic materials, which could be potentially harmful. The research, published in STEM CELLS, suggests that cells taken from a patient's eye can be "reprogrammed" to replace or restore cells lost to degenerative diseases.
The research, led by Professor Iqbal Ahmad and co-authors from the University of Nebraska Medical Center, is the first proof in principle that somatic, or body cells, can be reprogrammed into induced pluripotent stem cells (iPSCs) simply through the influence of the microenvironment in which the sampled cells are cultured. Until now genetic materials were introduced into somatic cells to re-programme them to become pluripotent, enabling them to generate cells of all three embryonic lineages.
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Scientists develop novel method to generate functional hepatocytes for drug testing |
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20 Oct 2009 - 9:00am UTC
Scientists have for the first time produced liver cells from adult skin cells using the induced pluripotent stem cell (iPSC) technology.
The study, led by the University of Edinburgh's MRC Centre for Regenerative Medicine, paves the way for the creation of a stem cell library that can be used for in vitro hepatic disease models.
Presently primary human hepatocytes (PHHs) are the ‘gold standard' cell type used in predictive drug toxicology. These cells are derived from dead or donor tissue. The cells can only survive for three to five days and do not have the ability to multiply. PHH cells are therefore a scarce and expensive resource.
This study shows an alternative way of sourcing hepatocytes, by creating hepatic endoderm using the iPSC technology and then differentiating it into hepatocytes.
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Key stem cell research under way UM and Bioheart may have breakthroughs |
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Monday, October 26, 2009
South Florida Business Journal - by Brian Bandel
How do you mend a broken heart? Many scientists say stem cells are the answer, but they're not sure how best to use them and make money doing it.
Clinical trials by the University of Miami and Sunrise-based Bioheart (OTCBB: BHRT) are among a wave of studies searching for ways to repair damaged hearts using stem cells. Numerous animal tests have shown stem cells can transform into new heart muscle to repair tears after a heart attack or partially replace scar tissue from old cardiac episodes.
There are about 1 million heart attacks a year in the U.S., with about two-thirds of the victims surviving, said Dr. Joshua M. Hare, a cardiologist and director of the Interdisciplinary Stem Cell Institute at UM's Miller School of Medicine. Many survivors have their lives cut short by congestive heart failure.
UM is running four clinical trials that inject stem cells from bone marrow into damaged hearts. One uses a unique catheter designed by BioCardia instead of major surgery. Another compares stem cells taken from patients to donor stem cells.
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Nature Reports Stem Cells Published online: 22 October 2009 | doi:10.1038/stemcells.2009.132
Monya Baker
An overview of the not-so-distant past, and an outlook for the not-so-distant future
It is easy to forget how rapidly stem cell science has developed over the past few years. A glance at the stem cell papers published in leading journals hints at both the pace of progress and the competition within the field. It has only been three years since Shinya Yamanaka, at Kyoto University in Japan, published his famous paper showing that differentiated mouse cells could be engineered to behave like embryonic stem (ES) cells - able to make almost every cell type in the body1. Only a handful of genes had to be introduced and overexpressed in these cells to make this possible. By June 2007, three papers had confirmed that such 'reprogrammed' mouse cells, now known as induced pluripotent stem (iPS) cells, could indeed become all body tissues2,3,4. By the end of 2007, a trio of papers was published that demonstrated the reprogramming of human cells5,6,7. The summer of 2009 has brought three papers showing that live, fertile mice can be generated from iPS cells - a further demonstration of the cells' similarity to ES cells (For references, see iPS cells make mice that make mice). And another five papers published in August 2009 identified molecular pathways that both link reprogramming to cancer and prevent reprogramming from being more efficient8,9,10,11,12.
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Stem cell transplants stalled blindness in rats |
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By Julie Steenhuysen
CHICAGO (Reuters) - Nerve stem cell transplants may help slow the progression of macular degeneration, the most common cause of blindness in the developed world, U.S. researchers said on Monday.
They said putting nerve stem cells from StemCells Inc near the retinas of rats with a form of macular degeneration helped keep the disease from advancing to blindness for several months.
"These cells improve the chemical environment in the back of the eye," said Ray Lund of the Casey Eye Institute at Oregon Health & Science University in Portland, whose findings were presented at the Society for Neuroscience meeting in Chicago.
Lund said the mechanism is not clear, but he suspects that when immature nerve cells are placed near the retina, they produce growth factors that protect the cells from damage by the disease.
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Presentation of Adult Stem Cell Study Highlights Promising Application of Autologous Stem Cells for Treatment of Spinal Cord Injury |
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CHICAGO, Oct. 19 /PRNewswire/ -- DaVinci Biosciences LLC, of Costa Mesa, CA, announced today the presentation of their safety and feasibility study demonstrating the administration of autologous bone marrow derived stem cells for the treatment of acute and chronic spinal cord injury at Neuroscience 2009, Society for Neuroscience's 39th Annual Meeting, to be held at McCormick Convention Center in Chicago, IL. Rafael Gonzalez, Ph.D., Director of Research and Development for DaVinci Biosciences LLC will present the work during the conference on October 20, 2009 and be available to answer questions regarding the study, following his presentation. "We are excited to share the findings of this study in such a public forum. This study successfully demonstrates not only the safety and feasibility of using autologous adult stem cells for treating spinal cord injuries, but also that the clinical procedure for delivering these cells is safe as well," said Dr. Gonzalez.
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Adipose-Derived Stem and Regenerative Cells Show Potential in First-in-Man Treatment of Stress Urinary Incontinence |
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SAN DIEGO, Oct 15, 2009 (BUSINESS WIRE) -- Cytori (NASDAQ:CYTX) was informed that stem and regenerative cells from a patient's own fat tissue were used to treat stress urinary incontinence (SUI) as part of an investigator-initiated five patient pilot study in Japan. The results, reported at the 7th Annual Meeting of the International Federation for Adipose Therapeutics and Science, suggest that the investigational treatment is safe and feasible. The study was led by Momokazu Gotoh, MD, Ph.D., Professor and Chairman of the Department of Urology and Tokunori Yamamoto, MD, Ph.D., Associate Professor Department of Urology at Nagoya University Graduate School of Medicine. The cells in the study were processed using Cytori's Celution(R) 800 System during the operative procedure.
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Stem cells offer new hope for kidney disease patients For Alport syndrome, several cell-based therapies show promise |
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15-Oct-2009
Contact: Shari Leventhal
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
202-416-0658 American Society of Nephrology
Several cell-based therapy approaches could provide new treatments for patients with Alport syndrome, reports an upcoming paper in the Journal of the American Society of Nephrology (JASN). "Our study opens up many considerations of how new therapies related to the use of stem cells can be devised for our kidney patients with chronic disease," comments Raghu Kalluri, MD, PhD (Harvard Medical School, Boston, MA).
Led by Valerie LeBleu, PhD (also of Harvard Medical School), the researchers tested various types of cell-based therapy in mice with a gene defect similar to that causing Alport syndrome, a genetic kidney disease. Most often occurring in boys, Alport syndrome causes progressive kidney disease leading to kidney failure at a young age. Patients may develop hearing loss and eye disease as well. Although treatment can slow the progression of kidney disease, there is currently no cure for Alport syndrome.
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Bioengineered Stem Cells May Offer New Hope for Pancreatic Cancer Patients |
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Bioengineered Stem Cells May Offer New Hope for Pancreatic Cancer Patients 10/6/2009 1:00 PM EDT Source: American College of Surgeons (ACS)
Newswise - Research scientists from Massachusetts General Hospital, Boston, have developed a novel bioengineered treatment that has shown promise in targeting pancreatic cancer without causing damage to healthy noncancer cells, a typical problem of chemotherapy. They presented their findings at the 95th annual Clinical Congress of the American College of Surgeons.
According to author Claudius Conrad, MD, PhD, the bioengineered construct used in the treatment is made of engineered, bone marrow-derived mesenchymal stem cells and a gene product toxic to tumor growth that is expressed when the tumor actively recruits the stem cells.
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Harvard team reports major step forward in cell reprogramming |
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"We're halfway home," says Eggan
October 8, 2009 B. D. Colen Harvard Staff Writer
A team of Harvard Stem Cell Institute (HSCI) researchers has made a major advance toward producing induced pluripotent stem cells, or iPS cells, that are safe enough to use in treating diseases in patients.
"This demonstrates that we're halfway home, and remarkably we got halfway home with just one chemical," said Kevin Eggan, an HSCI principal faculty member who is the senior author of the paper being published online today by the journal Cell Stem Cell.
"There are four genes that do this, and with just one chemical we replaced half the genes," said Eggan, who is also an assistant professor in Harvard's Department of Stem Cell and Regenerative Biology. "The one chemical replaces those two genes in different ways at different times in the experiment. The experiments we performed not only led to discovery of the chemical, but they also explained how it works," he said.
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Introducing Stem Cell Breast Augmentation |
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Arizona Surgeon, First in the US to Pioneer Procedure that has Gained World Notoriety
Scottsdale, AZ (PRWEB) October 15, 2009 -- Todd K. Malan, M.D., board certified cosmetic surgeon, has pioneered a revolutionary new procedure, the Natural Breast Augmentation, which employs the latest technologic advances in fat harvesting, adult stem cell transfers and breast splinting technology to provide women the option of enlarging their breasts using their own fat. The technique results in breasts that look and feel smoother than conventional cosmetic surgery using implants. Stem cells enable the fat to grow its own blood supply, thus becoming an integral part of the breast rather than a foreign lump. Stem cells have the potential to change into any cells in the body; they are found in most tissues, especially fat.
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Groundbreaking Stem Cell Surgery Gives Boy New Cheekbones Genetic Defect Causes Underdeveloped Facial Bones, Tissues |
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By DAN HARRIS and SUZAN CLARKE
Oct. 12, 2009-
Brad Guilkey, 15, was born without cheekbones and, for him, a typical sporting activity such as basketball carries tremendous risks.
Brad suffers from Treacher Collins syndrome, a rare genetic disorder in which the bones and other tissues in the face don't develop.
So, for Brad, a shot to the face during a game of basketball could crush his eyeball. His mother, Christine Guilkey, said the lack of bone meant the lack of vital protection.
But the Cincinnati teen has undergone groundbreaking experimental surgery that is allowing him to grow new cheekbones, a procedure that could help others who have lost bone as a result of similar genetic conditions or traumatic injuries.
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Jaw bone created from stem cells |
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Scientists have created part of the jaw joint in the lab using human adult stem cells.
They say it is the first time a complex, anatomically-sized bone has been accurately created in this way.
It is hoped the technique could be used not only to treat disorders of the specific joint, but more widely to correct problems with other bones too.
The Columbia University study appears in Proceedings of the National Academy of Sciences.
The bone which has been created in the lab is known as the temporomandibular joint (TMJ).
Problems with the joint can be the result of birth defects, arthritis or injury.
Although they are widespread, treatment can be difficult.
The joint has a complex structure which makes it difficult to repair by using grafts from bones elsewhere in the body.
The latest study used human stem cells taken from bone marrow.
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Res-Q point-of-care cell processing system from Celling Technologies |
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12. October 2009 09:58
Celling Technologies, an innovator in stem cell therapy, launched its latest technology for the isolation of adult stem cells. The Res-Q device was developed by ThermoGenesis Corporation to provide an easy to use, point-of-care system to compliment their MXP system currently being marketed in the United States and several international markets.
The Res-Q device is the second point-of-care cell processing system by Celling that utilizes a functionally closed system to eliminate sterility issues while providing consistent, reliable adult stem cell concentrations within minutes.
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Liver cells grown from patients' skin cells Treatment of liver diseases possible |
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8-Oct-2009
Medical College of Wisconsin
Scientists at The Medical College of Wisconsin in Milwaukee have successfully produced liver cells from patients' skin cells opening the possibility of treating a wide range of diseases that affect liver function. The study was led by Stephen A. Duncan, D. Phil., Marcus Professor in Human and Molecular Genetics, and professor of cell biology, neurobiology and anatomy, along with postdoctoral fellow Karim Si-Tayeb, Ph.D., and graduate student Ms. Fallon Noto.
"This is a crucial step forward towards developing therapies that can potentially replace the need for scarce liver transplants, currently the only treatment for most advanced liver disease," says Dr. Duncan.
Liver disease is the fourth leading cause of death among middle aged adults in the United States. Loss of liver function can be caused by several factors, including genetic mutations, infections with hepatitis viruses, by excessive alcohol consumption, or chronic use of some prescription drugs. When liver function goes awry it can result in a wide variety of disorders including diabetes and atherosclerosis and in many cases is fatal.
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3 American scientists share Nobel Prize in medicine |
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STOCKHOLM, Sweden - Americans Elizabeth Blackburn, Carol Greider and Jack Szostak won the 2009 Nobel Prize in medicine Monday for discovering a key mechanism in the genetic operations of cells, an insight that has inspired new lines of research into cancer.
Canadians Ernest McCulloch and James Till were believed to be the top contenders for the prize for their discovery of stem cells in the 1960s.
However, Blackburn, Greider and Szostak solved a big problem in biology: how chromosomes can be "copied in a complete way during cell divisions and how they are protected against degradation," the Nobel citation said.
It said the laureates have shown that the solution is to be found in the ends of the chromosomes - the telomeres - and in an enzyme that forms them. Telomeres are often compared to the plastic tips at the end of shoe laces that keep those laces from unravelling.
"The discoveries by Blackburn, Greider and Szostak have added a new dimension to our understanding of the cell, shed light on disease mechanisms, and stimulated the development of potential new therapies," the prize committee said in its citation.
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Cardiac Stem Cell Trial Seeks to Treat Some Heart Attack Patients |
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September 30, 2009 News Office: Lauren Hammit (415) 476-2557
Researchers at UCSF Medical Center have begun enrollment for an early-stage clinical trial to evaluate the safety and efficacy of an adult stem cell therapy for patients who have just experienced their first acute myocardial infarction, or heart attack. The trial is part of a multi-center national study.
The cells used, known as mesenchymal stem cells, were obtained from the bone marrow of healthy adult donors. Depending on their location in the body, mesenchymal stem cells give rise to bone, cartilage, fat, muscle and connective tissue.
The experimental therapy is intended to combat the symptoms related to heart damage that continue to develop following a heart attack, including low pumping capacity, inflammation and increased scar tissue. Although the exact mechanisms of the stem cells' actions in this setting are not yet known, previous studies have suggested that they could reduce the amount of scar tissue and inflammation caused by heart attack.
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Umbilical cord blood as a readily available source for off-the-shelf, patient-specific stem cells |
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October 01, 2009
Umbilical cord blood as a readily available source for off-the-shelf, patient-specific stem cells
LA JOLLA, CA-Umbilical cord blood cells can successfully be reprogrammed to function like embryonic stem cells, setting the basis for the creation of a comprehensive bank of tissue-matched, cord blood-derived induced pluripotent stem (iPS) cells for off-the-shelf applications, report researchers at the Salk Institute for Biological Studies and the Center for Regenerative Medicine in Barcelona, Spain.
"Cord blood stem cells could serve as a safe, "ready-to-use" source for the generation of iPS cells, since they are easily accessible, immunologically immature and quick to return to an embryonic stem cell-like state," says Juan-Carlos Izpisúa Belmonte, Ph.D., a professor in the Salk's Gene Expression Laboratory, who led the study published in the October issue of the journal Cell Stem Cell.
Worldwide, there are already more than 400,000 cord blood units banked along with immunological information. Due to their early origin, cells found in umbilical cord blood contain a minimal number of somatic mutations and possess the immunological immaturity of newborn cells, allowing the HLA donor-recipient match to be less than perfect without the risk of immune rejection of the transplant.
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UCSF, Osiris start cardiac stem cell study |
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San Francisco Business Times - by Ron Leuty
The two-year Phase II trial - the first stem cell clinical trial in cardiology at the University of California, San Francisco - will use mesenchymal stem cells obtained from the bone marrow of health adult donors. It is designed to combat symptoms related to heart damage that continue to develop following a heart attack, including low pumping capacity, inflammation and increased scar tissue.
UCSF will enroll 10 patients in the trial. Overall, about 220 patients will be enrolled nationally.
Those follow-on factors are believed to increase the risk of another heart attack. According to the American Heart Association, more than 500,000 Americans will experience their first heart attack in 2009 and 18 percent of men and 35 percent of women will have another heart attack within six years.
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Bioheart Makes Breakthrough in Cardiovascular Therapy with Stem Cells Obtained from Fat Tissue |
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Wed Sep 30, 2009 4:00pm EDT
The Bioheart Adipose Derived Stem Cells "ASC`s Treatment":
* The Fat Tissue in the Patient`s Body is Used to Generate Adipose Derived Stem Cells (ASC`s) * ASC`s Are Capable of Limiting Damage Due to a Cardiac Event and Promoting Additional Blood Vessel Formation * Bioheart's TGI 1200 System, Recovers Regenerative Stem Cells in 60 Minutes, with Minimal Operator Intervention
SUNRISE, Fla.--(Business Wire)-- Bioheart, Inc. (OTCBB:BHRT) offers yet another medical breakthrough with the next-level stem cell treatment for cardiac patients. The stem cells aid in limiting damage due to a cardiac event and promote angiogenesis or formation of new blood vessels.
Bioheart, in collaboration with Hospital de Clinicas Caracas in Caracas, Venezuela, has already begun three different studies utilizing the ASCs: surgical delivery of cells during a coronary artery bypass grafting (CABG) procedure, percutaneous delivery of cells in chronic heart ischemia and delivery of cells in critical limb ischemia.
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*Designates sites with available clinical trials. - *Minneapolis Heart Institute Foundation, Minneapolis, MN
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*Adult Stem Cell Laboratory, Medical College of Georgia
- *Stem Cell Center at Texas Heart Institute, Houston, TX
- *Indiana Center for Vascular Biology and Medicine, Laboratories, Indianapolis, IN
- *Feinberg Cardiovascular Research Institute - Northwestern University, Chicago, IL
- Yoder Laboratory - Indianapolis, IN
- Stem Cell Research Center - Taipei, Taiwan
- Adult Stem Cell Research Ctr, Seoul National University, Seoul, South Korea
- Wake Forest Institute of Regenerative Medicine, Winston-Salem, NC
- Division of Clinical Immunology and Transfusional Medicine, Stockholm, Sweden
- Stem Cell Research Center - Pittsburgh, PA
- Adipose Stem Cell Center, University of Pittsburgh, Pittsburgh, PA
- Adipose Tissue Plasticity
- Stem Cell Biology Laboratory, Pennington Biomedical Research Center, Baton Rouge, LA
- Interdisciplinary Stem Cell Institute/UM Med, Miami, FL
- Penn Lab - Cleveland Clinic, Cleveland, OH
- Kolonin Lab - Centre for Stem Cell Research, Houston, TX
- Naviaux Lab - The Mitochondrial and Metabolic Disease Center San Diego, CA
- Excellion Biomedical Services, Petropolis, Rio de Janeiro
- Center for Cardiovascular Cell Therapy, Louisville, KY
- RhinoCyte™, Inc., Louisville, KY
- The Cardiovascular Research Institute, Washington, DC
- Research & Development Unit - National Heart Centre, Singapore
- Simari Lab - Mayo Clinic, Rochester, MN
- Skeletal Tissue Engineering Group Amsterdam
- Stem Cell Biology and Cell Therapy Laboratory, Philadelphia, PA
- LIT - Laboratory of Transplantation Immunology
- Scandurro Research Laboratory - New Orleans, LA
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Skeletal Research Center, Case Western Reserve University - Cleveland, OH
- Laboratory for Stem Cell Injury - Charleston, SC
- Institute of Cell and Molecular Science - London, England
- Adult Stem Cell Laboratory - Seoul, South Korea
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