Girl, 2, gets stem cell windpipe

Hannah Warren, 2, with her parents Lee Young-mi and Darryl Warren. Hannah Warren received a windpipe made from her own stem cells in a landmark operation on April 9, 2013. Picture: The Korea Herald, Kim Myung-sub Source: AP

A 2-YEAR-OLD girl born without a windpipe now has a new one grown from her own stem cells, the youngest patient in the world to benefit from the experimental treatment.

Hannah Warren has been unable to breathe, eat, drink or swallow on her own since she was born in South Korea in 2010. Until the operation at a United States hospital, she had spent her entire life in a hospital in Seoul. Doctors there told her parents there was no hope and they expected her to die.

The stem cells came from Hannah's bone marrow, extracted with a special needle inserted into her hip bone. They were seeded in a lab onto a plastic scaffold, where it took less than a week for them to multiply and create a new windpipe.

About the size of an 8cm tube of penne pasta, it was implanted on April 9 in a nine-hour procedure.

Early signs indicate the windpipe is working, Hannah's doctors announced Tuesday, although she is still on a ventilator. They believe she will eventually be able to live at home and lead a normal life.

"We feel like she's reborn," said Hannah's father, Darryl Warren.

"They hope that she can do everything that a normal child can do but it's going to take time. This is a brand new road that all of us are on," he said in a telephone interview. "This is her only chance but she's got a fantastic one and an unbelievable one."

Only about one in 50,000 children worldwide are born with the same defect. The stem-cell technique has been used to make other body parts besides windpipes and holds promise for treating other birth defects and childhood diseases, her doctors said.

The operation brought together an Italian surgeon based in Sweden who pioneered the technique, a pediatric surgeon at Children's Hospital of Illinois in Peoria who met Hannah's family while on a business trip to South Korea, and Hannah - born to a Newfoundland man and Korean woman who married after he moved to that country to teach English.

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Girl, 2, gets stem cell windpipe

2-year-old girl gets windpipe made from stem cells

CHICAGO (AP) -- A 2-year-old girl born without a windpipe now has a new one grown from her own stem cells, the youngest patient in the world to benefit from the experimental treatment.

Hannah Warren has been unable to breathe, eat, drink or swallow on her own since she was born in South Korea in 2010. Until the operation at a central Illinois hospital, she had spent her entire life in a hospital in Seoul. Doctors there told her parents there was no hope and they expected her to die.

The stem cells came from Hannah's bone marrow, extracted with a special needle inserted into her hip bone. They were seeded in a lab onto a plastic scaffold, where it took less than a week for them to multiply and create a new windpipe.

About the size of a 3-inch tube of penne pasta, it was implanted April 9 in a nine-hour procedure.

Early signs indicate the windpipe is working, Hannah's doctors announced Tuesday, although she is still on a ventilator. They believe she will eventually be able to live at home and lead a normal life.

"We feel like she's reborn," said Hannah's father, Darryl Warren.

"They hope that she can do everything that a normal child can do but it's going to take time. This is a brand new road that all of us are on," he said in a telephone interview. "This is her only chance but she's got a fantastic one and an unbelievable one."

Only about one in 50,000 children worldwide are born with the same defect. The stem-cell technique has been used to make other body parts besides windpipes and holds promise for treating other birth defects and childhood diseases, her doctors said.

The operation brought together an Italian surgeon based in Sweden who pioneered the technique, a pediatric surgeon at Children's Hospital of Illinois in Peoria who met Hannah's family while on a business trip to South Korea, and Hannah born to a Newfoundland man and Korean woman who married after he moved to that country to teach English.

Hannah's parents had read about Dr. Paolo Macchiarini's success using stem-cell based tracheas but couldn't afford to pay for the operation at his center, the Karolinska Institute in Stockholm. So Dr. Mark Holterman helped the family arrange to have the procedure at his Peoria hospital, bringing in Macchiarini to lead the operation. Children's Hospital waived the cost, likely hundreds of thousands of dollars, Holterman said.

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2-year-old girl gets windpipe made from stem cells

Researchers Encouraged by Results from First American Clinical Trial for Stem Cell-Based Treatment of ALS

Newswise NEW ORLEANS (April 29, 2013) Researchers who completed the first American clinical trial involving stem cell-based treatment of Amyotrophic Lateral Sclerosis (ALS) were encouraged by the trial studys results, noting that this delivery approach could be a helpful therapeutic approach for other traumatic spine-related problems.

The group focused on the safety of a direct microinjection-based technique and neural stem cell transplantation to the cervical and thoracolumbar spinal cord. Eighteen microinjection procedures delivered NSI-566RSC, a human neural stem cell, to a total of 15 patients in five cohorts. Each of the injection procedures consisted of five injections of 10l at 4mm intervals. Group A (n=6) was non-ambulatory and received unilateral (n=3) or bilateral (n=3) thoracolumbar microinjection. Groups B through E were ambulatory and received unilateral (group B, n=3) or bilateral (group C,n=3) bilateral thoracolumbar microinjection. Groups D and E received unilateral cervical (group D,n=3) or cervical plus bilateral thoracolumbar microinjection (group E,n=3). Detailed pre- and post-operative neurological outcomes were recorded, such as post-operative pain, as well as urologic, sensory and motor functions. The results of this study, Intraspinal Stem Cell Transplantation in ALS, A Phase I Trial: Cervical Microinjection Safety Outcomes, will be presented by Jonathan Patrick Riley, MD, from 10:24-10:35 a.m. on Monday, April 29. Co-authors are Jonathan Glass, MD, PhD; Karl Johe, PhD; Meraida Polak, RN; Thais Federici, PhD; Eva Feldman, MD, PhD; and Nicholas Boulis, MD, FAANS.

In the results, researchers noted that the unilateral cervical (group D,n=3) and cervical plus thoracolumbar microinjections (group E,n=3) have been completed in ambulatory patients, and that no neurological worsening was witnessed to follow either cervical or thoracolumbar microinjection. The researchers did note that one cervical microinjection patient developed a post-operative kyphotic deformity, which prompted the addition of a laminoplasty in subsequent patients. Neurologic morbidity was not observed with the delivery of a cellular payload to the cervical or thoracolumbar spine spinal cord within the test groups of this at-risk patient group. This led the researchers to opinion that more consideration should be given to this delivery approach as a possible option for neurodegenerative, oncologic and traumatic spinal cord disorders.

We are excited that the safety results of this trial have borne out what has been shown by our preclinical studies that both the cervical and thoracolumbar spinal cord are able to safely tolerate multiple targeted injections of a cellular graft, said Jonathan Patrick Riley, MD. These results support the exploration of the cellular graft dose range that may be delivered and safely tolerated. Identification of a safe dose range that the spinal cord tolerates is an important first step prior to completion of Phase II efficacy studies.

Disclosure: Jonathan Patrick Riley, MD, disclosed that Neuralstem, Inc., provided other financial or material support.

Media Representatives: The 2013 AANS Annual Meeting Press Kit includes releases on highlighted scientific research, AANS officer and award winners, National Neurosurgery Awareness Week, and other relevant information about this years program. Those releases also will be posted under the Media area on the 2013 AANS Annual Scientific Meeting website (http://www.aans.org/Annual Meeting/2013/Main/Media.aspx). If you have interest in a topic related to neurosurgery or would like to interview a neurosurgeon either on-site or via telephone during this years event, please contact John Iwanski, AANS Director of Member and Public Outreach, via the onsite press room at (504) 670-4910 or e-mail him at jai@aans.org.

About the 2013 AANS Annual Scientific Meeting: Attended by neurosurgeons, neurosurgical residents, medical students, neuroscience nurses, clinical specialists, physician assistants, allied health professionals and other medical professionals, the AANS Annual Scientific Meeting is the largest gathering of neurosurgeons in the nation, with an emphasis on the fields latest research and technological advances. A record-breaking 1,003 scientific abstracts were presented for review at the 2013 AANS Annual Scientific Meeting, and the scientific presentations given at this years event represent cutting-edge examples of the incredible developments taking place within the field of neurosurgery. Additional information about the AANS Annual Scientific Meeting and the Meeting Program can be found at http://www.aans.org/Annual Meeting/2013/Main/Home.aspx.

Founded in 1931 as the Harvey Cushing Society, the American Association of Neurological Surgeons (AANS) is a scientific and educational association with nearly 8,300 members worldwide. The AANS is dedicated to advancing the specialty of neurological surgery in order to provide the highest quality of neurosurgical care to the public. All active members of the AANS are certified by the American Board of Neurological Surgery, the Royal College of Physicians and Surgeons (Neurosurgery) of Canada or the Mexican Council of Neurological Surgery, AC. Neurological surgery is the medical specialty concerned with the prevention, diagnosis, treatment and rehabilitation of disorders that affect the entire nervous system including the spinal column, spinal cord, brain and peripheral nerves. For more information, visit http://www.AANS.org.

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Researchers Encouraged by Results from First American Clinical Trial for Stem Cell-Based Treatment of ALS

ViaCord® to Advance Cord Blood Stem Cell Therapy Research through Collaboration with the Center for International …

WALTHAM, Mass.--(BUSINESS WIRE)--

ViaCord, PerkinElmers family cord blood and tissue preservation business, is collaborating with the Center for International Blood and Marrow Transplant Research (CIBMTR) to collect, maintain and publish research from ViaCords cord blood stem cell transplants. This collaboration will expand knowledge of cord blood-derived stem cell applications throughout the medical and research community. To date, CIBMTRs large network of transplant centers has resulted in the development of a clinical database of more than 30,000 cord blood transplant recipients for clinical decision-making, use in studies, and other research purposes with the goal of making a profound impact on the survival of cord blood transplant patients around the world. CIBMTR will work directly with ViaCord to collect and analyze data to better understand the quality and any outcome metrics of ViaCords released cord blood stem cell units as well as how the units are being used.

Collaborating with CIBMTR, which has established the industry standard for collecting data around hematopoietic cellular therapy and regenerative medicine, allows us to simultaneously gain insights into the effectiveness of the cord blood stem cell units we have released for use as well as outcomes from their clinical application, said Morey Kraus, Chief Scientific Officer, ViaCord. We are then able to incorporate data from our transplanted units into the larger database, which may be accessed for other CIBMTR studies by the medical and scientific community to further their research and understanding of cord blood stem cells.

ViaCord is working with CIBMTR to collect and publish data as well as identify outcomes unique to related or autologous (stem cells from the same patient) transplants. The collaboration will also enable the analysis of umbilical cord units released for potential future use in autologous cell therapy and regenerative medicine clinical trials, including Cerebral Palsy, Type 1 Diabetes and others.

The science of cord blood and cord tissue stem cells is growing at a rapid pace, said J. Douglas Rizzo, M.D., M.S., Associate Scientific Director, CIBMTR. We are excited to collaborate with ViaCord to provide data and analytic expertise that will assist the development of the field through research.

ViaCord's family cord blood banking services currently offers expectant families the opportunity to preserve their baby's umbilical cord blood for potential medical use by the child or a related family member. Families are also preserving their babys umbilical cord tissue because research suggests that one day these special cells may have the potential to treat medical conditions that are untreatable today. ViaCord has preserved the umbilical cord blood of more than 300,000 newborns. Twenty years ago, cord blood stem cells were used to treat just one disease, Fanconi's anemia. Today, cord blood stem cells have been used in the treatment of nearly 80 diseases, including cancers, certain blood disorders and immunodeficiencies. Please visit http://www.viacord.com for more information.

Factors Affecting Future Performance This press release contains "forward-looking" statements within the meaning of the Private Securities Litigation Reform Act of 1995, including, but not limited to, statements relating to estimates and projections of future earnings per share, cash flow and revenue growth and other financial results, developments relating to our customers and end-markets, and plans concerning business development opportunities and divestitures. Words such as "believes," "intends," "anticipates," "plans," "expects," "projects," "forecasts," "will" and similar expressions, and references to guidance, are intended to identify forward-looking statements. Such statements are based on management's current assumptions and expectations and no assurances can be given that our assumptions or expectations will prove to be correct. A number of important risk factors could cause actual results to differ materially from the results described, implied or projected in any forward-looking statements. These factors include, without limitation: (1) markets into which we sell our products declining or not growing as anticipated; (2) fluctuations in the global economic and political environments; (3) our failure to introduce new products in a timely manner; (4) our ability to execute acquisitions and license technologies, or to successfully integrate acquired businesses and licensed technologies into our existing business or to make them profitable, or successfully divest businesses; (5) our failure to adequately protect our intellectual property; (6) the loss of any of our licenses or licensed rights; (7) our ability to compete effectively; (8) fluctuation in our quarterly operating results and our ability to adjust our operations to address unexpected changes; (9) significant disruption in third-party package delivery and import/export services or significant increases in prices for those services; (10) disruptions in the supply of raw materials and supplies; (11) the manufacture and sale of products exposing us to product liability claims; (12) our failure to maintain compliance with applicable government regulations; (13) regulatory changes; (14) our failure to comply with healthcare industry regulations; (15) economic, political and other risks associated with foreign operations; (16) our ability to retain key personnel; (17) significant disruption in our information technology systems; (18) our ability to obtain future financing; (19) restrictions in our credit agreements; (20) our ability to realize the full value of our intangible assets; (21) significant fluctuations in our stock price; (22) reduction or elimination of dividends on our common stock; and (23) other factors which we describe under the caption "Risk Factors" in our most recent quarterly report on Form 10-Q and in our other filings with the Securities and Exchange Commission. We disclaim any intention or obligation to update any forward-looking statements as a result of developments occurring after the date of this press release.

About the Center for International Blood and Marrow Transplant Research(CIBMTR) A combined research program of the National Marrow Donor Program and the Medical College of Wisconsin, the CIBMTR facilitates critical, cutting-edge research that has led to increased survival and an enriched quality of life for thousands of patients. The CIBMTR collaborates with the global scientific community to advance hematopoietic cell transplantation and cellular therapy research worldwide. The prospective and observational research is accomplished through scientific and statistical expertise, a large network of transplant centers and clinical database of more than 350,000 transplant recipients.

About PerkinElmer, Inc. PerkinElmer, Inc. is a global leader focused on improving the health and safety of people and the environment. The company reported revenue of approximately $2.1 billion in 2012, has about 7,500 employees serving customers in more than 150 countries, and is a component of the S&P 500 Index. Additional information is available through 1-877-PKI-NYSE, or at http://www.perkinelmer.com.

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ViaCord® to Advance Cord Blood Stem Cell Therapy Research through Collaboration with the Center for International ...

Stem cell windpipe gives girl 'her only chance'

A two-year-old girl born without a windpipe now has a new one grown from her own stem cells, making her the youngest patient in the world to benefit from the experimental treatment.

Hannah Warren has been unable to breathe, eat, drink or swallow on her own since she was born in South Korea in 2010. Until the operation at a U.S. hospital, she had spent her entire life in a hospital in Seoul. Doctors there told her parents there was no hope and they expected her to die.

The stem cells came from Hannah's bone marrow, extracted with a special needle inserted into her hip bone. They were seeded in a lab onto a plastic scaffold, where it took less than a week for them to multiply and create a new windpipe.

The windpipe was implanted April 9 in a nine-hour procedure.

Early signs indicate the windpipe is working, Hannah's doctors announced Tuesday, although she is still on a ventilator. They believe she will eventually be able to live at home and lead a normal life.

"We feel like she's reborn," said Hannah's father, Darryl Warren.

"They hope that she can do everything that a normal child can do but it's going to take time. This is a brand new road that all of us are on," he said in a telephone interview. "This is her only chance but she's got a fantastic one and an unbelievable one."

Warren choked up and his wife, Lee Young-mi, was teary-eyed at a hospital news conference Tuesday. Hannah did not attend because she is still recovering from the surgery. She developed an infection after the operation but now is acting like a healthy 2-year-old, her doctors said.

Warren said he hopes the family can bring Hannah home for the first time in a month or so. Hannah turns 3 in August.

"It's going to be amazing for us to finally be together as a family of four," he said. The couple has an older daughter.

Link:
Stem cell windpipe gives girl 'her only chance'

Stem-cell windpipe gives 2-year-old chance for normal life

A 2-year-old girl born without a windpipe now has a new one grown from her own stem cells, the youngest patient in the world to benefit from the experimental treatment.

Hannah Warren has been unable to breathe, eat, drink or swallow on her own since she was born in South Korea in 2010. Until the operation at a central Illinois hospital, she had spent her entire life in a hospital in Seoul. Doctors there told her parents there was no hope and they expected her to die.

The stem cells came from Hannah's bone marrow, extracted with a special needle inserted into her hip bone. They were seeded in a lab onto a plastic scaffold, where it took less than a week for them to multiply and create a new windpipe.

About the size of a 3-inch tube of penne pasta, it was implanted April 9 in a nine-hour procedure.

Early signs indicate the windpipe is working, Hannah's doctors announced Tuesday, although she is still on a ventilator. They believe she will eventually be able to live at home and lead a normal life.

"We feel like she's reborn," said Hannah's father, Darryl Warren.

"They hope that she can do everything that a normal child can do but it's going to take time. This is a brand new road that all of us are on," he said in a telephone interview. "This is her only chance but she's got a fantastic one and an unbelievable one."

Warren choked up and his wife, Lee Young-mi, was teary-eyed at a hospital news conference Tuesday. Hannah did not attend because she is still recovering from the surgery. She developed an infection after the operation but now is acting like a healthy 2-year-old, her doctors said.

Warren said he hopes the family can bring Hannah home for the first time in a month or so. Hannah turns 3 in August.

"It's going to be amazing for us to finally be together as a family of four," he said. The couple has an older daughter.

Continued here:
Stem-cell windpipe gives 2-year-old chance for normal life

Stem cells grow new windpipe for 2-year-old girl facing death

Experimental stem-cell treatment has been credited with saving the life of a 2-year-old girl who was born without a windpipe.

The Associated Press reported that the treatment involved extracting cells from the girls own hip bone marrow. The cells were then seeded on a plastic base, and left for a week to multiply and grow. They grew into a windpipe, which was subsequently implanted on the girl, Hannah Warren, in a nine-hour surgery on April 9, AP reported.

Until her operation, the girl who was born in South Korea in 2010 had not been able to breathe or eat without medical assistance. She had spent her entire life in a Seoul hospital, awaiting death until being transported to the United States for the experimental treatment.

Early prognosis is positive.

Doctors said Tuesday she will likely be able to lead a normal life, AP reported.

We feel like shes reborn, said her father, Darryl Warren, in the AP report. They hope that she can do everything that a normal child can do, but its going to take time. This is a brand new road that all of us are on. This is her only chance, but shes got a fantastic one and an unbelievable one.

The surgery was performed at Childrens Hospital of Illinois. The girl is the youngest patient to ever receive the treatment, doctors said, in the AP report.

Copyright 2013 The Washington Times, LLC. Click here for reprint permission.

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Stem cells grow new windpipe for 2-year-old girl facing death

Stemedica Issued U.S. Patent For Ectodermal Stem Cells – Stem …

San Diego, CA (PRWEB) April 30, 2013

Stemedica Cell Technologies, Inc., a leading manufacturer of adult allogeneic stem cells and stem cell factors announced that the Company has been issued keystone Patent No. 8,420,394 titled Culturing Ectodermal Cells Under Reduced Oxygen Tension by the United States Patent and Trademark Office (USPTO). This patent broadly covers Stemedicas proprietary manufacturing process for enhancing the proliferation and differentiation potential of ectodermal cells of any origin. The ectodermal layer gives rise to the cells of the skin and nervous system. The patented process provides Stemedica exclusivity for expanding and manufacturing ischemia tolerant ectodermal cells under reduced oxygen tension.

Nikolai Tankovich, MD, PhD, FASLMS, President and Chief Medical Officer of Stemedica noted, We are pleased that the USPTO recognizes the uniqueness of the technology and processes to manufacture ectodermal cell of any origin. This includes, but is not limited to: allogeneic and autologous adult, embryonic, parthenogenic and iPS sources of stem cells. When compared to stem cells expanded in normal oxygen, Stemedica cells exhibit superior migratory and engraftment properties, enhanced gap junction formation and a unique gene profile. These critical cell characteristics are the direct result of Stemedicas proprietary technology and expansion methodology.

Alex Kharazi, MD, PhD, Chief Technology Officer at Stemedica noted that, We recently published data from the spinal cord injury study in rats done by Ivan Cheng, MD, at Stanford University showing significant efficacy of Stemedicas neural stem cells injected intrathecally both distally and at the site of injury. We also anticipate publishing extremely promising data in the application of our neural stem cells, mesenchymal stem cells and combined treatment in a mouse model of Alzheimers disease. This large scale animal study was funded by the Swiss government and examines both young and older mice for anatomical and biomarker changes in beta amyloid and tau proteins and brain re-perfusion.

Maynard Howe, PhD, Vice Chairman and Chief Executive Officer of Stemedica commented, While we are pleased to have added another patent to our growing portfolio of intellectual property, we are extremely excited to be issued this keystone patent. It represents the culmination of our research and development, coupled with our cGMP manufacturing processes and our license to make these cells broadly available.

About Stemedica Cell Technologies, Inc. http://www.stemedica.com Stemedica Cell Technologies, Inc. is a specialty bio-pharmaceutical company committed to the manufacturing and development of best-in-class allogeneic adult stem cells and stem cell factors for use by approved research institutions and hospitals for pre-clinical and clinical (human) trials. The company is a government licensed manufacturer of clinical grade stem cells and is approved by the FDA for its clinical trials for ischemic stroke, acute myocardial infarction, and cutaneous photoaging. Stemedica is currently developing regulatory pathways for a number of medical indications using adult allogeneic stem cells. The Company is headquartered in San Diego, California.

For more information please contact Dave McGuigan at dmcguigan (at) stemedica (dot) com

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Adults lack stem cells for making new eggs, research shows – Stem …

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Mammalian females ovulate periodically over their reproductive lifetimes, placing significant demands on their ovaries for egg production. Whether mammals generate new eggs in adulthood using stem cells has been a source of scientific controversy. If true, these germ-line stem cells might allow novel treatments for infertility and other diseases. However, new research from Carnegies Lei Lei and Allan Spradling demonstrates that adult mice do not use stem cells to produce new eggs. Their work is published by the Proceedings of the National Academy of Sciences the week of April 29.

Before birth, mouse and human ovaries contain an abundant supply of germ cells, some of which will develop into the eggs that will ultimately be released from follicles during ovulation. Around the time of birth these germ cells have formed a large reserve of primordial follicleseach containing a single immature egg. Evidence of new follicle production is absent after birth, so it has long been believed that the supply of follicles is fixed at birth and eventually runs out, leading to menopause.

During the last decade, some researchers have claimed that primordial follicles in adult mouse ovaries turn over and that females use adult germ-line stem cells to constantly resupply the follicle pool and sustain ovulation. These claims were based on subjective observations of ovarian tissue and on the behavior of extremely rare ovarian cells following extensive growth in tissue culture, a procedure that is capable of reprogramming cells.

Lei and Spradling used a technique that allows individual cells and their progeny within a living animal to be followed over time by marking the cells with a new gene. This general approach, known as lineage-tracing, has been a mainstay of classical developmental biology research and has greatly clarified knowledge of tissue stem cells during the last decade.

Their research showed that primordial follicles are highly stable, and that germ-line stem cell activity cannot be detected, even in response to the death of half the existing follicles. The research placed a stringent upper limit on the stem cell activity that could exist in the mouse ovary and escape detectionone stem cell division every two weeks, which is an insignificant level.

What about the rare stem-like cells generated in cultures of ovarian cells? According to Spradling, these cells likely arise by dedifferentiation in culture, and the same safety and reliability concerns would apply as to any laboratory-generated cell type that lacks a normal counterpart in the body.

Related: Do ovaries continue to produce eggs during adulthood?

More information: Female mice lack adult germ-line stem cells but sustain oogenesis using stable primordial follicles, PNAS, http://www.pnas.org/cgi/doi/10.1073/pnas.1306189110

Researchers have found a way to turn mouse embryonic stem cells into sperm. This finding, reported in the journal Cell in a special online release on August 4th, opens up new avenues for infertility research and treatment. A Kyo

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Adults lack stem cells for making new eggs, research shows – Stem ...

Study confirms that mesenchymal stem cells may help treat cancer …

Apr 30

Published on April 29, 2013 at 1:17 AM

Injection of human stem cells into mice with tumors slowed down tumor growth, finds research published in BioMed Centrals open access journal Stem Cell Research & Therapy. Human mesenchymal stem cells (MSC), isolated from bone marrow, caused changes in blood vessels supplying the tumor, and it is this modification of blood supply which seems to impact tumor growth.

The use of stem cells in treating cancer has been controversial, with some studies finding that stem cells force tumors to enter programmed cell death. However other studies find that stem cells actually promote tumor growth by inducing infiltration of new blood vessels. In attempting to sort out this puzzle researchers from INSERM groups at Universit- Joseph Fourier in collaboration with CHU de Grenoble investigated the impact of MSC on already established subcutaneous or lung metastasis in mice.

For both the subcutaneous and lung tumors, injection of MSC reduced cell division, consequently slowing the rate of tumor growth. Part of the mode of action of stem cells therefore appears to be due to with angiogenesis, but the mechanism behind this is still unclear.

Claire Rome who led this study explained, We found that MSC altered vasculature inside the tumor although new blood vessels were generated, overall they were longer and fewer than in untreated tumors. This could be restricting the oxygen and nutrients to the tumor, limiting cell division. She continued, Our study confirms others which propose that stem cells, in particular MSC, might be one way forwards in treating cancer.

Commenting on this study Celia Gomes, from the University of Coimbra, said, One of the interesting questions this study raises is when MSC promote tumor growth and when they restrict it. The answer seems to be timing this study looks at already established tumors, while others, which find that MSC increase growth, tend to be investigating new tumors. This is a first step in the path to identifying exactly which patients might benefit from stem cell therapy and who will not.

Source: BioMed Central

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Study confirms that mesenchymal stem cells may help treat cancer ...