Stem cell transplantation outcomes ‘improved with new drug regime’
By Sykes24Tracey
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New research suggests that outcomes for patients who have undergone stem cell transplants from unrelated or mismatched donors could be improved with the use of a drug called bortezomib, also known as velcade. This is according to a study presented at the annual meeting of the American Society of Hematology.
Stem cell transplants are treatments carried out in an attempt to cure some cancers affecting the body's bone marrow, such as leukemia, lymphoma and myeloma.
The treatment involves very high doses of chemotherapy (myeloablation) or whole body radiotherapy to clear a person's bone marrow and immune system of cancerous cells.
After this process, the killed cells are replaced with healthy stem cells through a drip that flows into a vein. These stem cells can be from the patient's own body or from a donor - preferably a sibling.
According to researchers from the Dana-Farber Cancer Institute who conducted the study, stem cells from unrelated or mismatched donors are likely to lead to worse patient outcomes following transplantation.
These patients tend to have a higher mortality rate as a result of the treatment and are more likely to experience graft-versus-host-disease (GVHD). This is a disease in which the transplanted cells attack the immune system of the recipient.
According to the researchers, recipients of mismatched donor transplants have a severe GVHD rate of 37%, a 1-year treatment-related mortality rate of 45%, and a 1-year overall survival rate of 43%.
Recipients of unrelated donor transplants have a severe GVHD rate of 28%, a 1-year treatment-related mortality rate of 36%, and a 1-year overall survival rate of 52%.
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Stem cell transplantation outcomes 'improved with new drug regime'
Skin’s own cells offer hope for new ways to repair wounds and reduce impact of aging on the skin
By raymumme
PUBLIC RELEASE DATE:
11-Dec-2013
Contact: Katya Nasim katya.nasim@kcl.ac.uk 44-207-848-3840 King's College London
Scientists at King's College London have, for the first time, identified the unique properties of two different types of cells, known as fibroblasts, in the skin one required for hair growth and the other responsible for repairing skin wounds. The research could pave the way for treatments aimed at repairing injured skin and reducing the impact of ageing on skin function.
Fibroblasts are a type of cell found in the connective tissue of the body's organs, where they produce proteins such as collagen. It is widely believed that all fibroblasts are the same cell type. However, a study on mice by researchers at King's, published today in Nature, indicates that there are at least two distinct types of fibroblasts in the skin: those in the upper layer of connective tissue, which are required for the formation of hair follicles and those in the lower layer, which are responsible for making most of the skin's collagen fibres and for the initial wave of repair of damaged skin.
The study found that the quantity of these fibroblasts can be increased by signals from the overlying epidermis and that an increase in fibroblasts in the upper layer of the skin results in hair follicles forming during wound healing. This could potentially lead to treatments aimed at reducing scarring.
Professor Fiona Watt, lead author and Director of the Centre for Stem Cells and Regenerative Medicine at King's College London, said: 'Changes to the thickness and compostion of the skin as we age mean that older skin is more prone to injury and takes longer to heal. It is possible that this reflects a loss of upper dermal fibroblasts and therefore it may be possible to restore the skin's elasticity by finding ways to stimulate those cells to grow. Such an approach might also stimulate hair growth and reduce scarring.
'Although an early study, our research sheds further light on the complex architecture of the skin and the mechanisms triggered in response to skin wounds. The potential to enhance the skin's response to injury and ageing is hugely exciting. However, clinical trials are required to examine the effectiveness of injecting different types of fibroblasts into the skin of humans.'
Dr Paul Colville-Nash, Programme Manager for Regenerative Medicine at the MRC, said: 'These findings are an important step in our understanding of how the skin repairs itself following injury and how that process becomes less efficient as we age. The insights gleaned from this work will have wide-reaching implications in the area of tissue regeneration and have the potential to transform the lives patients who have suffered major burns and trauma.'
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Skin's own cells offer hope for new ways to repair wounds and reduce impact of aging on the skin
Stem cells for Parkinson’s getting ready for clinic
By raymumme
A groundbreaking attempt to heal eight Parkinson's patients with their own cells could move from research to the clinic next year.
For eight Parkinson's patients seeking treatment with a new form of stem cell therapy, 2014 promises to be a milestone. If all goes well, next year the FDA will give approval to begin clinical trials. And if the patients can raise enough money, the scientists and doctors working with them will have the money to proceed.
Jeanne Loring, a stem cell scientist at The Scripps Research Institute, discusses the status of a project to treat Parkinson's patients with their own cells, turned into the kind of brain cells destroyed in Parkinson's. The project is a collaboration with Scripps Health and the Parkinson's Association of San Diego.
Scientists at The Scripps Research Institute led by Jeanne Loring have taken skin cells from all patients and grown them into artificial embryonic stem cells, called induced pluripotent stem cells. They then converted the cells into dopamine-making neurons, the kind destroyed in Parkinson's disease.
Loring discussed the project's progress on Friday morning at the 2013 World Stem Cell Summit in San Diego.
If animal studies now under way and other requirements are met, doctors at Scripps Health will perform a clinical trial. They will grow neurons until they are just short of maturity, then transplant them into the brains of the respective patients. The cells are expected to complete maturation in the brain, forming appropriate connections with their new neighbors, and begin making dopamine.
Earlier attempts to treat Parkinson's with a stem cell-like therapy mostly failed because of difficulties in quality control of the source, neural cells from aborted fetuses, Loring said. But some patients gained lasting improvement, a tantalizing hint that the trials were on the right track.
In January, a "pre-pre-IND meeting" is planned with the FDA, Loring said.
Also speaking were Ed Fitzpatrick, one of the eight patients, and Kyoto University researcher Jun Takahashi, who is independently trying the same approach in Japan.
Ed Fitzpatrick, one of eight Parkinson's patients in a program to be treated with his own cells, grown into the kind of brain cells destroyed in Parkinson's.
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Stem cells for Parkinson's getting ready for clinic
Okyanos Heart Institute CEO Matt Feshbach Congratulates Japan’s Legislators On Stem Cell Bill And Global Regulatory …
By daniellenierenberg
FREEPORT, The Bahamas (PRWEB) December 06, 2013
December 6, 2013 Matt Feshbach, CEO of Okyanos Heart Institute whose mission it is to bring a new standard of care and better quality of life to patients with coronary artery disease using cardiac stem cell therapy, acknowledges the Japanese legislature for its recent approval of a bill aimed at the treatment of certain chronic diseases using regenerative medicine strategies.
The legislation was passed in Japan on November 20th, 2013. The new regenerative medicine law emphasizes the importance of establishing patient safety in the use of adult stem cell therapies prior to being offered commercially. It also serves to support innovation in stem cell and regenerative medicine therapies by providing a framework by which such technologies may be granted new, limited approval paths for some biologics.
Japan has taken a leadership position globally for its passage of enlightened legislation for stem cell therapy, said Feshbach, who recognizes this development as an important milestone in its potential to benefit patients and the field of healthcare.
We applaud Japan as well as other countries including but not limited to Australia, Singapore, and New Zealand for approving stem cell processing devices and/or biologics (such as stem cells) for use in clinics today, he added. This legislation in Japan says that if a stem cell therapy protocol can demonstrate a strong safety profile, physicians have the option to offer it to patients, generally when other standard-of-care interventions have not proven effective and the patients have no other options available to them. Patients will have the choice to use their own stem cells to treat the condition. By tracking the progress of the patients over time, efficacy can be determined and the treatment may become another standard-of-care treatment option available to patients.
While this research is important over the long term, adult stem cell therapy is unique in that it takes advantage of the natural mechanisms of a persons own stem cells to repair the cells, tissues or organs damaged by disease or injury, stated Feshbach. The dawn of a new phase in the evolution of medicine has begun.
Additional countries such as The Bahamas, Panama, Argentina and Jordan have established regulations and legislation designed to both protect patient safety and give access to treatments which have the potential to help unmet needs such as heart failure and other diseases.
Japan represents the second-largest medical market in the world and remains a global leader in both adult stem cell and gene therapy trials. Dr. Shinya Yamanaka, professor and director for the Center for iPS Cell Research and Application (CiRA) at Kyoto University, was awarded a Nobel Prize in 2012 for the discovery of induced pluripotent stem cells (iPS). Click here to read more about the Japanese legislatures recent stem cell measures.
About Okyanos Heart Institute: (Oh key AH nos) Based in Freeport, The Bahamas, Okyanos Heart Institutes mission is to bring a new standard of care and a better quality of life to patients with coronary artery disease using cardiac stem cell therapy. Okyanos adheres to U.S. surgical center standards and is led by Chief Medical Officer Howard T. Walpole Jr., M.D., M.B.A., F.A.C.C., F.S.C.A.I. Okyanos Treatment utilizes a unique blend of stem and regenerative cells derived from ones own adipose (fat) tissue. The cells, when placed into the heart via a minimally-invasive catheterization, stimulate the growth of new blood vessels, a process known as angiogenesis. The treatment facilitates blood flow in the heart and supports intake and use of oxygen (as demonstrated in rigorous clinical trials such as the PRECISE trial). The literary name Okyanos (Oceanos) symbolizes flow. For more information, go to http://www.okyanos.com
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Okyanos Heart Institute CEO Matt Feshbach Congratulates Japan’s Legislators On Stem Cell Bill And Global Regulatory ...
Stem cell science: Can two girls help change the face of medicine?
By Dr. Matthew Watson
Dec. 8, 2013 at 2:49 PM ET
Jeff Swensen / for NBC News
The Mogul family at The Children's Institute in Pittsburgh, Pennsylvania where parents Stephen and Robyn have taken their daughter, Bari, 9 and Hayley, 15, to undergoing extensive therapy to help with their rare genetic disorders.
At 15, Hayley Mogul lacks the fine motor skills needed to write. Her sister Bari is 9 and still eating baby food.
There's no cure for their rare disorders, caused by unique genetic mutations. But for once, there's an advantage to having conditions so rare that drug companies cannot even think of looking for a cure. The sisters are taking part in a whole new kind of experiment in which scientists are literally turning back the clock on their cells.
Theyre using an experimental technique to transform the cells into embryonic form, and then growing these baby cells in lab dishes.
The goal is the get the cells to misfire in the lab in just the same way they are in Hayleys and Baris bodies. Its a new marriage of genetics and stem cell research, and represents one of the most promising applications of so-called pluripotent stem cells.
One day these two girls will probably change the face of medicine as we know it, said their father, Steven Mogul.
Steven and Robyn Mogul dont understand why both their daughters ended up with the rare mutations, which cause a range of neurological and metabolic problems.
We have been tested, said Mogul, a 45-year-old wealth manager living in Chicago. We dont have any mutations, and there are no developmental issues. We have no idea how it happened.
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Stem cell science: Can two girls help change the face of medicine?
‘Something positive for humankind’: Girls lend cells to genetic study
By raymumme
NBC News - At 15, Hayley Mogul lacks the fine motor skills needed to write. Her sister Bari is 9 and still eating baby food.
There's no cure for their rare disorders, caused by unique genetic mutations. But for once, there's an advantage to having conditions so rare that drug companies cannot even think of looking for a cure. The sisters are taking part in a whole new kind of experiment in which scientists are literally turning back the clock on their cells.
They're using an experimental technique to transform the cells into embryonic form, and then growing these baby cells in lab dishes.
The goal is the get the cells to misfire in the lab in just the same way they are in Hayley's and Bari's bodies. It's a new marriage of genetics and stem cell research, and represents one of the most promising applications of so-called pluripotent stem cells.
"One day these two girls will probably change the face of medicine as we know it," said their father, Steven Mogul.
Steven and Robyn Mogul don't understand why both their daughters ended up with the rare mutations, which cause a range of neurological and metabolic problems.
"We have been tested," said Mogul, a 45-year-old wealth manager living in Chicago. "We don't have any mutations, and there are no developmental issues. We have no idea how it happened. "
The girls need special schooling and physical therapy. They must wear diapers, and when they get a cold or the flu, they can develop dangerously low blood sugar. "When the kids get sick, get colds or flu, we have to get them to the hospital," Mogul said.
Hayley, 15, has a mutation in a gene called RAI1, which can cause Smith-Magenis syndrome. The syndrome affects 1 in 25,000 people and can disturb sleep patterns, cause obesity and behavioral issues. But Hayley's mutation is unique and puzzling. Bari, 9, has an RAI1 mutation and a similarly unique mutation in the GRIN2B gene, which can cause learning disabilities.
"Bari doesn't talk," Mogul said. "She walks around, she gets around and lets you know what she wants. She is eating baby food and she is drinking from bottles."
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'Something positive for humankind': Girls lend cells to genetic study
Step closer to muscle regeneration
By JoanneRUSSELL25
Dec. 11, 2013 Muscle cell therapy to treat some degenerative diseases, including Muscular Dystrophy, could be a more realistic clinical possibility, now that scientists have found a way to isolate muscle cells from embryonic tissue.
PhD Student Bianca Borchin and Associate Professor Tiziano Barberi from the Australian Regenerative Medicine Institute (ARMI) at Monash University have developed a method to generate skeletal muscle cells, paving the way for future applications in regenerative medicine.
Scientists, for the first time, have found a way to isolate muscle precursor cells from pluripotent stem cells using a purification technique that allows them to differentiate further into muscle cells, providing a platform to test new drugs on human tissue in the lab. Pluripotent stem cells have the ability to become any cell in the human body including, skin, blood, brain matter and skeletal muscles that control movement.
Once the stem cells have begun to differentiate, the challenge for researchers is to control the process and produce only the desired, specific cells. By successfully controlling this process, scientists could provide a variety of specialised cells for replacement in the treatment of a variety of degenerative diseases such as Muscular Dystrophy and Parkinson's disease.
"There is an urgent need to find a source of muscle cells that could be used to replace the defective muscle fibers in degenerative disease. Pluripotent stem cells could be the source of these muscle cells," Professor Barberi said.
"Beyond obtaining muscle from pluripotent stem cells, we also found a way to isolate the muscle precursor cells we generated, which is a prerequisite for their use in regenerative medicine.
"The production of a large number of pure muscle precursor cells does not only have potential therapeutic applications, but also provides a platform for large scale screening of new drugs against muscle disease."
Using a technology known as fluorescence activated cell sorting (FACS), the researchers identified the precise combination of protein markers expressed in muscle precursor cells that enabled them to isolate those cells from the rest of the cultures.
Ms Borchin said there were existing clinical trials based on the use of specialised cells derived from pluripotent stem cells in the treatment of some degenerative diseases but deriving muscle cells from pluripotent stem cells proved to be challenging.
"These results are extremely promising because they mark a significant step towards the use of pluripotent stem cells for muscle repair," Ms Borchin said.
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Step closer to muscle regeneration
California’s Stem-Cell Quest Races Time as Money Dwindles
By daniellenierenberg
Californias government-run stem-cell research agency, on course to spend $3 billion in taxpayer money to find treatments for some of the worlds most intractable diseases, is pushing to accelerate human testing before its financing runs out.
For the California Institute for Regenerative Medicine, time is growing short to fund research that demonstrates the potential of stem cells to help treat everything from cancer to heart disease to spinal cord injuries.
The agency, created by voters in 2004, has given out more than half of its $3 billion from state bonds and must spend the rest by 2017. The largest U.S. funding source for stem-cell research outside the federal government, its under pressure to show results to attract new money from pharmaceutical companies, venture capitalists or even more municipal bonds.
We need to figure out how to keep them going, said Jonathan Thomas, a founding partner of Saybrook Capital LLC in Los Angeles, and chairman of the institutes board, which meets today. We could do public-private partnerships, venture philanthropy, a ballot box.
Embryonic stem cells have the potential to change into any type of cell in the body. They are among the first cells created in embryos after conception. Scientists hope they may replace damaged or missing tissue in the brain, heart and immune system.
California voters approved the bonds after President George W. Bush banned the use of federal funds for research on embryonic stem cells. Since then, other types of stem cells have been shown to act like embryonic cells, relieving some of the debate over the ethics of destroying human embryos to use the cells.
The agencys funding decisions have included a grant of $20 million to a team led by Irv Weissman at the Stanford University School of Medicine, seeking a cure for cancer.
Weissmans team is working on an antibody manufactured with stem cells that allows a cancer patients own immune system to destroy a tumor, instead of relying on toxic radiation or chemotherapy. The antibody counteracts a protein called CD47, which creates what scientists call a dont eat me shield around the cancer. Once that cloak is removed, the patients immune system recognizes the cancer and attacks the tumor, shrinking or eliminating it.
Tests on humans are to begin early next year. The antibody has already worked in mice against breast, colon, ovarian, prostate, brain, bladder and liver cancer.
Two other research projects funded by the California agency are in human trials now -- one targeting HIV, the virus that causes AIDS, and another that regrows cardiac tissue in heart-attack victims.
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California’s Stem-Cell Quest Races Time as Money Dwindles
UCLA Scientists First to Track Joint Cartilage Development in Humans
By Sykes24Tracey
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Newswise Stem cell researchers from UCLAs Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research have published the first study to identify the origin cells and track the early development of human articular cartilage, providing what could be a new cell source and biological roadmap for therapies to repair cartilage defects and osteoarthritis. These revolutionary therapies could reach clinical trials within three years.
Led by Dr. Denis Evseenko, assistant professor of orthopedic surgery and head of UCLAs Laboratory of Connective Tissue Regeneration, the study was published online ahead of print in Stem Cell Reports on December 12, 2013.
Articular cartilage is a highly specialized tissue formed from cells called chondrocytes that protect the bones of joints from forces associated with load bearing and impact, and allows nearly frictionless motion between the articular surfaces. Cartilage injury and lack of cartilage regeneration often lead to osteoarthritis involving degradation of joints, including cartilage and bone. Osteoarthritis currently affects more than 20 million people in the United States alone, making joint surface restoration a major priority in modern medicine.
Different cell types have been studied with respect to their ability to generate articular cartilage. However, none of the current cell-based repair strategies including expanded articular chondrocytes or mesenchymal stromal cells from adult bone marrow, adipose tissue, sinovium or amniotic fluid have generated long-lasting articular cartilage tissue in the laboratory.
By bridging developmental biology and tissue engineering, Evseenkos discoveries represent a critical missing link providing scientists with checkpoints to tell if the cartilage cells (called chondrocytes) are developing correctly.
We began with three questions about cartilage development, Evseenko said, we wanted to know the key molecular mechanisms, the key cell populations, and the developmental stages in humans. We carefully studied how the chondrocytes developed, watching not only their genes, but other biological markers that will allow us to apply the system for the improvement of current stem cell-based therapeutic approaches.
This research was also the first attempt to generate all the key landmarks that allow generation of clinically relevant cell types for cartilage regeneration with the highest animal-free standards. This means that the process did not rely on any animal components, thus therapeutic products such as stem-cell serums can be produced that are safe for humans.
Evseenko added that in a living organism more than one cell type is responsible for the complete regeneration of tissue, so in addition to the studies involving generation of articular cartilage from human stem cells, he and his team are now trying different protocols using different combinations of adult progenitor cells present in the joint to regenerate cartilage until the best one is found for therapeutic use.
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UCLA Scientists First to Track Joint Cartilage Development in Humans
UCLA Scientists Taking Stem Cell Research to Patients
By JoanneRUSSELL25
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Newswise Scientists from UCLAs Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research are bringing stem cell science funded by the California Institute of Regenerative Medicine (CIRM), the state stem cell agency, directly to patients in two exciting new clinical trials scheduled to begin in early 2014. The recipients of the Disease Team Therapy Development III awards were Dr. Dennis Slamon and Dr. Zev Wainberg, whose phase I clinical trial will test a new drug that targets cancer stem cells and has been approved to begin enrolling patients in the US and Canada, and Dr. Donald Kohn, whose first-in-human trial is on stem cell gene therapy for sickle cell disease (SCD).
The announcement of the new awards came on December 12, 2013 at the meeting of the CIRM Independent Citizens Oversight Committee (ICOC) at the Luxe Hotel in Los Angeles. Dr. Owen Witte, Director of the UCLA Broad Stem Cell Research Center, highlighted that the The CIRM support demonstrates that our multidisciplinary Center is at the forefront of translating basic scientific research to new drug and cellular therapies that will revolutionize medicine.
Targeting solid tumor stem cells The Disease Team III grant to Dr. Dennis Slamon and Dr. Zev Wainberg and their US-Canadian collaborative team will support the first in human clinical trial scheduled to open in early 2014. The project builds on Dr. Slamons previous work partially funded by CIRM to develop a drug that targets tumor initiating cells with UCLAs Dr. Zev Wainberg, assistant professor of hematology/oncology and Dr. Tak Mak, director, Campbell Family Institute of the University Health Network in Toronto, Canada. Dr. Slamon, renowned for his research that led to the development of Herceptin, the first FDA-approved targeted therapy for breast cancer, is the director of clinical and translational research at the UCLA Jonsson Comprehensive Cancer Center, and professor, chief and executive vice chair for research in the division of hematology/oncology.
With investigational new drug approval from the Food and Drug Administration (FDA) and Health Canada, the Canadian governments therapeutic regulatory agency, this trial is an international effort to bring leading-edge stem cell science to patients.
We are delighted to receive this CIRM grant that will drive our translational research from the laboratory to the clinic, Slamon said, and allow us to test our targeted drug in a phase I clinical trial.
The trial is based on the evidence built over the last decade for what has become known as the cancer stem cell hypothesis. According to this hypothesis, cancer stem cells are the main drivers of tumor growth and are also resistant to standard cancer treatments. One view is that cancer stem cells inhabit a niche that prevents cancer drugs from reaching them. Another view is that tumors can become resistant to therapy by a process called cell fate decision, by which some tumor cells are killed by therapy and others become cancer stem cells. These cancer stem cells are believed to be capable of self-renewal and repopulation of tumor cells, resulting in the recurrence of cancer.
The target of the new drug is an enzyme in cancer stem cells and tumor cells called Polo-like kinase 4, which was selected because blocking it negatively affects cell fate decisions associated with cancer stem cell renewal and tumor cell growth, thus stopping tumor growth.
This potential anti-cancer drug is now ready to be tested in humans for the first time. Our goal is to test this novel agent in patients in order to establish safety and then to proceed quickly to rapid clinical development. We are excited to continue this academic collaboration with our Canadian colleagues to test this drug in humans for the first time, said Wainberg. Drs. Slamon, Wainberg, Mak and colleagues will also look for biological indications, called biomarkers, that researchers can use to tell if and how the drug is working.
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UCLA Scientists Taking Stem Cell Research to Patients
What are the potential uses of human stem cells and the …
By Dr. Matthew Watson
Introduction: What are stem cells, and why are they important? What are the unique properties of all stem cells? What are embryonic stem cells? What are adult stem cells? What are the similarities and differences between embryonic and adult stem cells? What are induced pluripotent stem cells? What are the potential uses of human stem cells and the obstacles that must be overcome before these potential uses will be realized? Where can I get more information? VII. What are the potential uses of human stem cells and the obstacles that must be overcome before these potential uses will be realized?
There are many ways in which human stem cells can be used in research and the clinic. Studies of human embryonic stem cells will yield information about the complex events that occur during human development. A primary goal of this work is to identify how undifferentiated stem cells become the differentiated cells that form the tissues and organs. Scientists know that turning genes on and off is central to this process. Some of the most serious medical conditions, such as cancer and birth defects, are due to abnormal cell division and differentiation. A more complete understanding of the genetic and molecular controls of these processes may yield information about how such diseases arise and suggest new strategies for therapy. Predictably controlling cell proliferation and differentiation requires additional basic research on the molecular and genetic signals that regulate cell division and specialization. While recent developments with iPS cells suggest some of the specific factors that may be involved, techniques must be devised to introduce these factors safely into the cells and control the processes that are induced by these factors.
Human stem cells could also be used to test new drugs. For example, new medications could be tested for safety on differentiated cells generated from human pluripotent cell lines. Other kinds of cell lines are already used in this way. Cancer cell lines, for example, are used to screen potential anti-tumor drugs. The availability of pluripotent stem cells would allow drug testing in a wider range of cell types. However, to screen drugs effectively, the conditions must be identical when comparing different drugs. Therefore, scientists will have to be able to precisely control the differentiation of stem cells into the specific cell type on which drugs will be tested. Current knowledge of the signals controlling differentiation falls short of being able to mimic these conditions precisely to generate pure populations of differentiated cells for each drug being tested.
Perhaps the most important potential application of human stem cells is the generation of cells and tissues that could be used for cell-based therapies. Today, donated organs and tissues are often used to replace ailing or destroyed tissue, but the need for transplantable tissues and organs far outweighs the available supply. Stem cells, directed to differentiate into specific cell types, offer the possibility of a renewable source of replacement cells and tissues to treat diseases including Alzheimer's diseases, spinal cord injury, stroke, burns, heart disease, diabetes, osteoarthritis, and rheumatoid arthritis.
Figure 3. Strategies to repair heart muscle with adult stem cells. Click here for larger image.
2001 Terese Winslow
For example, it may become possible to generate healthy heart muscle cells in the laboratory and then transplant those cells into patients with chronic heart disease. Preliminary research in mice and other animals indicates that bone marrow stromal cells, transplanted into a damaged heart, can have beneficial effects. Whether these cells can generate heart muscle cells or stimulate the growth of new blood vessels that repopulate the heart tissue, or help via some other mechanism is actively under investigation. For example, injected cells may accomplish repair by secreting growth factors, rather than actually incorporating into the heart. Promising results from animal studies have served as the basis for a small number of exploratory studies in humans (for discussion, see call-out box, "Can Stem Cells Mend a Broken Heart?"). Other recent studies in cell culture systems indicate that it may be possible to direct the differentiation of embryonic stem cells or adult bone marrow cells into heart muscle cells (Figure 3).
Cardiovascular disease (CVD), which includes hypertension, coronary heart disease, stroke, and congestive heart failure, has ranked as the number one cause of death in the United States every year since 1900 except 1918, when the nation struggled with an influenza epidemic. Nearly 2600 Americans die of CVD each day, roughly one person every 34 seconds. Given the aging of the population and the relatively dramatic recent increases in the prevalence of cardiovascular risk factors such as obesity and type 2 diabetes, CVD will be a significant health concern well into the 21st century.
Cardiovascular disease can deprive heart tissue of oxygen, thereby killing cardiac muscle cells (cardiomyocytes). This loss triggers a cascade of detrimental events, including formation of scar tissue, an overload of blood flow and pressure capacity, the overstretching of viable cardiac cells attempting to sustain cardiac output, leading to heart failure, and eventual death. Restoring damaged heart muscle tissue, through repair or regeneration, is therefore a potentially new strategy to treat heart failure.
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PRP and Stem Cell Therapy for Joint Pain- San Diego Center for Integrative Medicine – Video
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PRP and Stem Cell Therapy for Joint Pain- San Diego Center for Integrative Medicine
http://SDIntegrativeMedicine.com PRP and Stem Cell Therapy for Joint Pain at San Diego Center for Integrative Medicine. Platelet-Rich Plasma or PRP, along wi...
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Heart Failure Patient Has 3 Normal EKGs After Stem Cell Therapy – Video
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Heart Failure Patient Has 3 Normal EKGs After Stem Cell Therapy
I was diagnosed 20 years ago. My heart was stopped up. I have 11 stents in my heart. When they put in (stents) nine, ten and eleven they blocked an artery an...
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JCI – Advances in stem cell therapy for spinal cord injury
By raymumme
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Andrea J. Mothe and Charles H. Tator
Toronto Western Research Institute and Krembil Neuroscience Centre, Toronto Western Hospital, Toronto, Ontario, Canada.
Address correspondence to: Charles H. Tator, Toronto Western Research Institute and Krembil Neuroscience Centre, Toronto Western Hospital, 399 Bathurst Street, Toronto, ON, Canada M5T 2S8. Phone: 416.603.5889; Fax: 416.603.5745; E-mail: charles.tator@uhn.on.ca.
Published November 1, 2012
Spinal cord injury (SCI) is a devastating condition producing great personal and societal costs and for which there is no effective treatment. Stem cell transplantation is a promising therapeutic strategy, though much preclinical and clinical research work remains. Here, we briefly describe SCI epidemiology, pathophysiology, and experimental and clinical stem cell strategies. Research in stem cell biology and cell reprogramming is rapidly advancing, with the hope of moving stem cell therapy closer to helping people with SCI. We examine issues important for clinical translation and provide a commentary on recent developments, including termination of the first human embryonic stem cell transplantation trial in human SCI.
Spinal cord injury (SCI) is a devastating condition, with sudden loss of sensory, motor, and autonomic function distal to the level of trauma. Despite major advances in the medical and surgical care of SCI patients, no effective treatment exists for the neurological deficits of major SCI (1). Current treatment includes surgery to decompress and stabilize the injury, prevention of secondary complications, management of any that do occur, and rehabilitation. Unfortunately, neurological recovery is limited, and most SCI patients still face substantial neurological dysfunction and lifelong disability. Stem cell therapy offers several highly attractive strategies for spinal cord repair, including replacement of damaged neuronal and glial cells, remyelination of spared axons, restoration of neuronal circuitry, bridging of lesion cavities, production of neurotrophic factors, antiinflammatory cytokines, and other molecules to promote tissue sparing and neovascularization, and a permissive environment for plasticity and axonal regeneration. This review builds on several excellent previous reviews (28) and discusses the incidence and pathophysiology of SCI as well as the key experimental and clinical stem cell strategies for SCI.
Worldwide, the annual incidence of SCI is 1540 cases per million people (9). In Canada, the Rick Hansen Institute estimates there are currently 85,000 people living with SCI, with more than 4,000 new cases per year (10), and in the United States, the Christopher and Dana Reeve Foundation estimates a prevalence of over 1 million patients with SCI and more than 12,000 new cases each year (11).
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JCI - Advances in stem cell therapy for spinal cord injury
Bone marrow – Science Daily
By daniellenierenberg
Bone marrow is the tissue comprising the center of large bones.
It is the place where new blood cells are produced.
Bone marrow contains two types of stem cells: hemopoietic (which can produce blood cells) and stromal (which can produce fat, cartilage and bone).
There are two types of bone marrow: red marrow (also known as myeloid tissue) and yellow marrow.
Red blood cells, platelets and most white blood cells arise in red marrow; some white blood cells develop in yellow marrow.
The color of yellow marrow is due to the much higher number of fat cells.
Both types of bone marrow contain numerous blood vessels and capillaries. At birth, all bone marrow is red.
With age, more and more of it is converted to the yellow type.
Adults have on average about 2.6kg (5.7lbs) of bone marrow, with about half of it being red.
Red marrow is found mainly in the flat bones such as hip bone, breast bone, skull, ribs, vertebrae and shoulder blades, and in the cancellous ("spongy") material at the proximal ends of the long bones femur and humerus.
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Multiple Myeloma Stem Cell Therapy Financial Considerations – Gujarati – Video
By JoanneRUSSELL25
Multiple Myeloma Stem Cell Therapy Financial Considerations - Gujarati
By: Drmeena Shah
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Multiple Myeloma Stem Cell Therapy Financial Considerations - Gujarati - Video
Heart Stem Cell Trial: Interview With Researcher Roberto Bolli, MD
By JoanneRUSSELL25
An interview with Roberto Bolli, MD.
University of Louisville cardiologist Roberto Bolli, MD, led the stem cell study that tested using patients' own heart stem cells to help their hearts recover from heart failure. Though that trial was preliminary, the results look promising -- and may one day lead to a cure for heart failure.
Here, Bolli talks about what this work means and when it might become an option for patients.
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"Realistically, this will not come... for another three or four years, at least," Bolli says. "It may be longer, depending on the results of the next trial, of course."
Larger studies are needed to confirm the procedure's safety and effectiveness. If those succeed, it could be "the biggest advance in cardiovascular medicine in my lifetime," Bolli says.
A total of 20 patients took part in the initial study.
All of them experienced significant improvement in their heart failure and now function better in daily life, according to Bolli. "The patients can do more, there's more ability to exercise, and the quality of life improves markedly," Bolli says.
Bolli's team published its findings on how the patients were doing one year after stem cell treatment in November 2011 in the Lancet, a British medical journal.
Each patient was infused with about 1 million of his or her own cardiac stem cells, which could eventually produce an estimated 4 trillion new cardiac cells, Bolli says. His team plans to follow each patient for two years after their stem cell procedure.
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Heart Stem Cell Trial: Interview With Researcher Roberto Bolli, MD
Apple Stem Cells Offer Hope for Aging and Damaged Skin – Life …
By raymumme
As we age, the reduced turnover of our cells means we can lose control over how our skin ages. Epidermal stem cells needed to create healthy new skin are significantly reduced and function less efficiently. A discovery based on promising plant stem cell research may allow you to regain control.
Scientists have found that a novel extract derived from the stem cells of a rare apple tree cultivated for its extraordinary longevity shows tremendous ability to rejuvenate aging skin. By stimulating aging skin stem cells, this plant extract has been shown to lessen the appearance of unsightly wrinkles. Clinical trials show that this unique formulation increases the longevity of skin cells, resulting in skin that has a more youthful and radiant appearance.
Cells in our bodies are programmed for specific functions. A skin cell, a brain cell, and a liver cell all contain the same DNA, or set of genes. However, each cells fate is determined by a set of epigenetic (able to change gene expression patterns) signals that come from inside it and from the surrounding cells as well. These signals are like command tags attached to the DNA that switch certain genes on or off.
This selective coding creates all of the different kinds of cells in our bodies, which are collectively known as differentiated (specialized) cells.
Although differentiated cells vary widely in purpose and appearance, they all have one thing in common: they all come with a built-in operational limit. After so many divisions, they lose their ability to divide and must be replaced. This is where stem cells come in.
Your body also produces other cells that contain no specific programming. These stem cells are blank, so your body can essentially format them any way it pleases. Two universal aspects shared by this type of cell are: (1) the ability to replenish itself through a process of self-renewal and (2) the capacity to produce a differentiated cell.
In animals and humans, two basic kinds of stem cells exist: embryonic and adult stem cells. Embryonic stem cells have the power to change into any differentiated cell type found anywhere in your body. Adult stem cells, on the other hand, are generally more limited. They can only evolve into the specific type of cell found in the tissue where they are located. The primary function of these adult stem cells is maintenance and repair.
But certain adult stem cells found in nature retain the unlimited developmental potential that embryonic stem cells possess. These cells have become the main focus for an exciting new wave of regenerative medicine (repairing damaged or diseased tissues and organs using advanced techniques like stem cell therapy and tissue engineering).
The basal (innermost) layer of the skins epidermis comprises two basic types of cells: (1) the slowly dividing epidermal stem cells (that represent about 2-7% of the basal cell population) and (2) their rapidly dividing offspring that supply new cells to replace those that are lost or dying.1-3
The slow self-renewal process of epidermal stem cells, however, creates a problem. Because each epidermal stem cell only lasts for a certain number of divisions, and because each division runs the risk of lethal DNA mutation, the epidermal stem cell population can become depleted. When this happens, lost or dying skin cells begin to outnumber their replacements and the skins health and appearance start to decline.
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Apple Stem Cells Offer Hope for Aging and Damaged Skin - Life ...
Activate Self-Renewing Skin Stem Cells – Life Extension
By Dr. Matthew Watson
Maintaining more luminous skin is dependent upon your bodys unique ability to replace dead skin cells. This vital process of continuous self-renewal depends on the activity of epidermal stem cells.
The epidermis (upper skin layer) has been shown to replace itself in just 20 days in young adults, compared to 30 days in middle-aged adults.1 Unfortunately, this rate of renewal dramatically declines after age 50.
The exciting news is that the decline in the skins capacity to renew itself may be safely slowed or even reversed.
Researchers have found that when applied to the skin, a novel, patent-pending preparation of cultured stem cells derived from the Alpine rose may stimulate epidermal stem cell activity.2
In this article, epidermal stem cells role in skin beauty is detailed, along with supportive data on Alpine rose stem cells ability to activate the skins innate power of self-renewal.
The Alpine rose (Rhododendron ferrugineum) thrives in the Swiss Alps and the Pyrenees where it endures high altitudes, extreme cold, dry air, and high levels of ultra violet radiation.
This plants ability to withstand harsh environmental stress factors such as freezing temperatures, drought, and scorching UV rays prompted researchers to investigate the Alpine rose as a source of protection for human skin cells. Like the Alpine rose, human skin cells must resist a host of environmental stressors and lock in essential fluids. Skin that performs this barrier function well is more resilient and less likely to develop fine lines and wrinkles or show other signs of aging.
The skin functions as an essential barrier to protect the body from microbial invaders, toxins, the ravages of weather, dehydration, and mechanical trauma. This protective function is governed by stem cells. There are two broad classes of stem cells: pluripotent embryonic stem cells, which have the capacity to develop into any cell type, and adult stem cells, which can differentiate to become some or all of the specialized cell types present in a specific tissue or organ. The adult stem cells in the skin reside in the deepest layer of the epidermis, close to hair follicles.
Epidermal stem cells help to facilitate the turnover of all skin cells, replenishing their supply and maintaining a continuous equilibrium of skin cells in all stages of their life cycles. Epidermal stem cells have relatively slow turnover compared to other skin cell types, but it is their tremendous reproducing potential that gives the skin the remarkable capacity to renew itself completely.3 These types of stem cells also are vitally important for repairing the skin after injury and enabling wound healing.4
The researchers found that applying selected plant stem cell extracts to the skin, specifically those cultured from the Alpine rose, offers protection to the epidermal stem cells, prolonging their lives, increasing their colony-forming efficiency and enhancing their function. These potent plant stem cells from the Alpine rose appear to stimulate the skins own epidermal stem cell activity, revitalizing it and boosting its capacity for repair and self-renewal.
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Activate Self-Renewing Skin Stem Cells - Life Extension
Induced Pluripotent Stem Cells (iPS) from Human Skin: Probable …
By daniellenierenberg
Introduction
The announcement of the ability to produce embryonic cell-like lines from ordinary skin cells has the news media scrambling to get feedback about the possible efficacy of such lines in stem cell therapies. Many politicians have landed on one side or the other, with liberals saying that embryonic stem cell research is still necessary1 and conservatives claiming that all embryonic research should be halted. The marketplace of science will eventually weigh-in on which method(s) are used in real therapies.
Embryonic stem cell (ESC) research has been a hot topic, with conservatives saying that such research is morally unacceptable and liberals saying that conservatives value a clump of cells more than people who have serious disabling diseases. Several groups of medical researchers (including James Thomson, the first person to culture ESC) recently showed that normal skin cells can be reprogrammed to an embryonic state, producing what are now called induced pluripotent stem (iPS) cells. Originally performed in mice in June, 2007,2 researchers took four genes OCT3/4, SOX2, KLF4, and c-MYC and incorporated those genes into the nucleus of cells to induce pluripotency. Such lines could be expanded indefinitely and could differentiate to form numerous kinds of different tissues.
Just five months after the mouse study was published, the feat was repeated by three separate laboratories using human skin cells.3 One research group used the same genes as those used in the mouse study, whereas a second group used OCT3, SOX2, NANOG and LIN28. The techniques were efficient enough to generate one cell line for every 5-10 thousand cells treated. Although not extremely efficient, it is quite usable, since it is possible to obtain hundreds of thousands to millions of cells to carry out these kinds of studies. The technique was recently replicated for adult human skin cells,4 instead of skin cell lines, demonstrating that it could be used to generate patient-specific cell lines.
Studies using iPS cell lines have shown that those cells undergo similar changes compared to what is observed with embryonic stem cells. Cell populations grew at the same rate, telomerase (which preserves the ends of chromosomes) was present in both iPS and ESC. Severalgenes that are silenced in fibroblasts, but active in ESC, were also active in the iPS cells. The iPS cell lines could be differentiated into heart muscle and neuronal cells, in addition to basic cell types (ectoderm, mesoderm, and endoderm). Gene expression assays showed that 5,000 genes from iPS cells showed a five-fold difference in expression compared to those in fibroblasts, although 1,267 genes had a five-fold difference in expression between ESC and iPS cells. According to the James Thomson study, "The human iPS cells described here meet the defining criteria we originally proposed for human ES cells (14), with the significant exception that the iPS cells are not derived from embryos."3
Originally, the new technique is not without its own set of problems, although within two years, virtually all had been resolved. One of the original genes used for reprogramming (c-MYC) has been shown to produce tumors and cancers. Obviously, it would not be a good choice for patient therapy. However, this gene was eliminated in some of the later techniques.5 The second problem was that the genes were originally introduced through the use of a retrovirus that incorporates into the host cell DNA. Depending upon where the gene sequence inserts, it may cause trouble (including mutations and cancers). Those who watched the I am Legend movie will remember that a retrovirus-derived cancer treatment was responsible for turning the surviving members of the human race into an army of grotesque monsters. Although such a transformation is not possible, the initiation of cancer in even a small number of treated patients would make such treatments unusable for human therapy. Two years later the problem of using a retroviral system for reprogramming was solved by switching to a simple lentivirus reprogramming system.6 Within weeks, other researchers went a step further, eliminating viral reprogramming altogether by using reprogramming genes (OCT4, SOX2, NANOG, LIN28, c-Myc, and KLF4) cloned into a circular piece of DNA called a plasmid.7 Subsequent culture of of the iPS over a period of weeks resulted in the complete loss of the plasmid, but with continued pluripotency. The potential of iPS cells is so great that the researcher who first grew ESC in culture is now one of the leading proponents of iPS stem cell research.
A more recent, but somewhat uncertain potential problem has been identified more recently. Since iPS cells are derived from adult tissues, they tend to harbor some of the same epigenetic profiles as those adult tissues from which they are derived. As cells age or differentiate, certain genes are turned on or off through methylation of those gene's promoters. The process prevents those cells from undergoing additional changes that might cause the cells to lose their differentiated properties. When adults cells are induced to pluripotency, some of those epigenetic profiles are retained in the iPS cells.8 How will these vestiges of adult cells affect iPS ability to differentiate into cells that are useful for disease models or therapy? At this point, we don't know for sure. However, my guess is that different ESC lines will exhibit different epigenetic profiles, as will specific isolates of iPS cells. Although researchers have found no problems in producing differentiated iPS lines, some of these epigenetic changes might interfere with the ultimate function of these cells as differentiated cell lines.
Even with these issues, research institutes are beginning to focus their stem cell research on iPS cells. Cedars-Sinai Medical Center recently opened its Induced Pluripotent Stem Cell Core Production Facility in late 2011, according to their press release.9
Induction of pluripotency to produce embryonic-like stem cells is the hot topic in stem cell research. The fact that human iPS cells have been produced in many different laboratories after the initial animal studies shows that the technique is robust and easily reproducible. In contrast, the competing technique, human somatic cell nuclear transfer (cloning), has never been transferred from animal studies to human application, despite years of attempts. At this point, it seems pretty certain that the iPS technique will soon replace ESC as the preferred means of generating human stem cell lines. However, the disadvantage of iPS cells is that the cell lines produced would be patient specific (only useful for the intended patient), whereas the establishment of ESC lines allows biotech companies to patent the lines in order to make lots of money.
http://www.godandscience.org/doctrine/reprogrammed_stem_cells.html Last Modified October 6, 2011
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