Page 210«..1020..209210211212..220230..»

Category Archives: Stem Cell Videos

Promise of cell therapy for bowel disease

Posted: September 20, 2012 at 2:18 am

ScienceDaily (Sep. 19, 2012) New research shows that a special population of stem cells found in cord blood has the innate ability to migrate to the intestine and contribute to the cell population there, suggesting the cells' potential to treat inflammatory bowel disease (IBD).

"These cells are involved in the formation of blood vessels and may prove to be a tool for improving the vessel abnormalities found in IBD," said lead author Graca Almeida-Porada, M.D., Ph.D., a professor at Wake Forest Baptist Medical Center's Institute for Regenerative Medicine. The research is published in the current print issue of the journal Hepatology.

Up to 1 million Americans have IBD, which is characterized by frequent diarrhea and abdominal pain. IBD actually refers to two conditions -- ulcerative colitis and Crohn's disease -- in which the intestines become red and swollen and develop ulcers. With IBD, blood vessels in the intestine leak and contribute to inflammation.

While there is currently no cure for IBD, there are drug therapies aimed at reducing inflammation and preventing the immune response. However, these therapies aren't always effective. The long-term aim of the research is to develop an injectable cell therapy to induce tissue recovery.

The work, performed while Almeida-Porada was at the University of Nevada, also involved colleagues from Indiana University School of Medicine. The researchers studied a special population of cells, known as endothelial colony-forming cells, found in cord blood, bone marrow and circulating blood. The finding in 1997 that the cells can contribute to blood vessel formation in adults, not just embryos, initiated the notion of using them for therapy. Studies in humans have validated the ability of these cells to improve reduced blood flow to the limbs and to treat heart diseases.

However, there have been few studies to explore the inherent biologic ability of these cells to home to different organs and contribute to tissue-specific cell populations. Evaluating their potential to migrate to the intestine was an obvious choice, said Almeida-Porada, because dysfunctional blood vessels are a hallmark of IBD. Not only are circulating levels of vessel-forming cells reduced in patients with IBD, but a key factor in IBD progression is the development of abnormal or immature blood vessels, which leads to chronic inflammation.

The cells were injected into fetal sheep at 59 to 65 days gestation. About 11 weeks later, intestinal tissue was analyzed to detect the presence of the human cells. The researchers found that the human cells had migrated to the intestine and contributed significantly to the cell population there.

"This study shows that the cells can migrate to and survive in a healthy intestine and have the potential to support vascular health," said Almeida-Porada. "Our next step will be to determine whether the cells can survive in the 'war' environment of an inflamed intestine."

The researchers also evaluated the ability of the cells to home to the liver. Smaller numbers of cells reached the liver than the intestine, suggesting that new strategies would be needed to enhance the therapeutic potential for this organ.

The research was supported by the National Heart, Lung, and Blood Institute grants HL097623 and HL073737.

Continue reading here:
Promise of cell therapy for bowel disease

Posted in Stem Cell Videos | Comments Off on Promise of cell therapy for bowel disease

South Korean lawmakers one step from rigorous new system for stem cell Advancement: scientists, physicians and …

Posted: September 20, 2012 at 2:18 am

SEOUL, South Korea, Sept. 19, 2012 /PRNewswire/ -- Seung-Jo Yang, a Parliament member, prepared a bill proposing new law for the management and transplantation of stem cells. On September 17, the National Health and Welfare Committee referred the bill to the Conference for review. The previous 18th National Assembly proposed a similar stem cell bill when much of its term had already passed so it was not fully discussed until the period ended, disappointing many patients with rare diseases. The Bill was referred to the 19th National Assembly, though, which shows the willingness of South Korean leaders to meet the expectations that this new law will be passed coming from the medical community and patient groups throughout South Korea.

Dr. Jeong-Chan Ra, president of RNL BIO's stem cell technology institute said "This effort for new stem cell bill will advance the use and sophistication of autologous adult stem cell technology as a powerful solution for overcoming incurable diseases." Dr. Ra, whose pioneering efforts in Korean stem cell research are known worldwide, is equally known in Korea as an ardent advocate for governmental investment in regenerative medicine. Perhaps no scientist has pushed harder for rigorous standards for stem cell banking, which this proposal may at last bring to fruition.

In South Korea stem cell banks have not been operated under a specific legal structure, so development and progress has been limited. The proposed law suggests that the harvesting and preservation of stem cells must be controlled by national regulation, specifically a management system for stem cell harvesting, storage and implantation. Through this, stem cell experts expect growth in responsible stem cell research and faster, even safer development of therapeutics.

Additionally, the current Korean policy requires stem cell programs - regardless of whether there are available therapies for patients with any particular condition - to complete clinical trial phase III for market approval. Had such rules been in place, for example, for the treatment of H.I.V., tens of thousands of people would have died. Many treatments for those with incurable diseases have been approved without completion of Phase III including stem cell treatments in other nations, even for the treatment of HIV, which stem cells have now cured. The bill under consideration proposes that physicians can use their own stem cells to treat conditions under their discretion if those stem cells are properly expanded, managed, handled and provided to clinicians for them at or above the proposed standards, which is the best news patients with incurable diseases for which no existing cure is available by current medicine have had in a long time.

When the bill is passed, high standards will be established and the better methods will immediately be made obvious to both government and patients. Through this the stem cell community expects a leap in industrial growth, and a leap in the ethical adherence of physicians to do no harm to patients and to provide remedies where possible for the aid of their patients.

The Korean medical community also expects not only to see an influx of domestic patients but also many patients from other nations that lack standards for the growth of patients' own stem cells. South Korea, many economists predict, could become the Mecca for stem cell therapeutics.

Continue reading here:
South Korean lawmakers one step from rigorous new system for stem cell Advancement: scientists, physicians and ...

Posted in Stem Cell Videos | Comments Off on South Korean lawmakers one step from rigorous new system for stem cell Advancement: scientists, physicians and …

Louise Phanstiel Joins Verastem Board of Directors

Posted: September 19, 2012 at 5:13 pm

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

Verastem, Inc., (VSTM) a biopharmaceutical company focused on discovering and developing drugs to treat breast and other cancers by targeting cancer stem cells, announced the appointment of S. Louise Phanstiel to its Board of Directors. Louise Phanstiel was most recently the President of Specialty Products at WellPoint, Inc. and currently serves on the Board of Directors of Myriad Genetics and Cedar Sinai Health System.

Louise is a healthcare leader with strategic and financial experience at the highest level, said Christoph Westphal, M.D., Ph.D., Chairman and CEO of Verastem. On behalf of Lead Director Henri Termeer and the Verastem Board of Directors, I welcome her and look forward to her contributions as we continue the development of our portfolio of cancer stem cell-targeted candidates with the initiation of Phase 2 trials planned for 2013.

Verastem is leveraging its scientific expertise to eliminate cancer stem cells based on the groundbreaking work of Dr. Robert Weinberg, said Louise Phanstiel. This approach may be the key to providing a durable clinical response for serious cancers, one of the most pressing issues in all of healthcare. I am delighted to become a part of the team and work on this transformative approach to cancer treatment.

S. Louise Phanstiel has held several executive positions at WellPoint, Inc., including: President, Specialty Products; Senior Vice President, Chief of Staff and Corporate Planning; and Senior Vice President, Chief Accounting Officer and Controller and CFO of all of WellPoint subsidiaries, including Blue Cross of California. Prior to WellPoint, Ms. Phanstiel was a Partner, Los Angeles Cluster Insurance Leader at Coopers & Lybrand, LLP. She currently serves on the board of Myriad Genetics and Cedar Sinai Health System. Ms. Phanstiel received her BA in accounting from Golden Gate University in San Francisco, CA.

AboutVerastem, Inc.

Verastem, Inc.(VSTM) is a biopharmaceutical company focused on discovering and developing drugs to treat breast and other cancers by targeting cancer stem cells. Cancer stem cells are an underlying cause of tumor recurrence and metastasis. For more information please visitwww.verastem.com.

Forward-looking statements:

This press release includes forward-looking statements about the Companys strategy, future plans and prospects, including statements regarding the development of the Companys compounds and the expected timing of certain phase 2 clinical trials. The words anticipate, believe, estimate, expect, intend, may, plan, predict, project, target, potential, will, would, could, should, continue, and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Each forward-looking statement is subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied in such statement. Applicable risks and uncertainties include the risks that the preclinical testing of the Companys compounds may not be predictive of the success of later clinical trials, that the Company will be unable to successfully complete the clinical development of its compounds, that the development of the Companys compounds will take longer or cost more than planned, and that the Companys compounds will not receive regulatory approval or become commercially successful products. Other risks and uncertainties include those identified under the heading Risk Factors in the Companys Annual Report on Form 10-K for the year ended December 31, 2011 and in any subsequent SEC filings. The forward-looking statements contained in this presentation reflect the Companys current views with respect to future events, and the Company does not undertake and specifically disclaims any obligation to update any forward-looking statements.

Link:
Louise Phanstiel Joins Verastem Board of Directors

Posted in Stem Cell Videos | Comments Off on Louise Phanstiel Joins Verastem Board of Directors

BioTime CEO Michael D. West to Present at Stem Cells USA & Regenerative Medicine Congress 2012

Posted: September 19, 2012 at 5:13 pm

ALAMEDA, Calif.--(BUSINESS WIRE)--

BioTime, Inc. (NYSE MKT: BTX) announced that Chief Executive Officer Michael D. West, Ph.D. will present at the Stem Cells USA & Regenerative Medicine Congress 2012 in Cambridge, MA on Thursday, September 20, 2012. Dr. West will speak on Second Generation hES Cell-Based Therapies: Achieving Purity and Scalability in the Midst of Diversity in the session Developments in Novel Therapeutics. The presentation will be made available on BioTime's website at http://www.biotimeinc.com.

The Stem Cells USA & Regenerative Medicine Congress 2012, September 20-21, is North Americas leading commercial stem cell event. This years conference will focus on strategies and business models for navigating the stem cell and regenerative medicine marketplace for pharma, biotech, and investors.

About BioTime, Inc.

BioTime, headquartered in Alameda, California, is a biotechnology company focused on regenerative medicine and blood plasma volume expanders. Its broad platform of stem cell technologies is enhanced through subsidiaries focused on specific fields of application. BioTime develops and markets research products in the field of stem cells and regenerative medicine, including a wide array of proprietary ACTCellerate cell lines, HyStem hydrogels, culture media, and differentiation kits. BioTime is developing Renevia (formerly known as HyStem-Rx), a biocompatible, implantable hyaluronan and collagen-based matrix for cell delivery in human clinical applications. BioTime's therapeutic product development strategy is pursued through subsidiaries that focus on specific organ systems and related diseases for which there is a high unmet medical need. BioTime's majority owned subsidiary Cell Cure Neurosciences Ltd. is developing therapeutic products derived from stem cells for the treatment of retinal and neural degenerative diseases. BioTime's subsidiary OrthoCyte Corporation is developing therapeutic applications of stem cells to treat orthopedic diseases and injuries. Another subsidiary, OncoCyte Corporation, focuses on the diagnostic and therapeutic applications of stem cell technology in cancer, including the diagnostic product PanC-Dx currently being developed for the detection of cancer in blood samples. ReCyte Therapeutics, Inc. is developing applications of BioTime's proprietary induced pluripotent stem cell technology to reverse the developmental aging of human cells to treat cardiovascular and blood cell diseases. BioTime's subsidiary, LifeMap Sciences, Inc., markets GeneCards, the leading human gene database, and is developing an integrated database suite to complement GeneCards that will also include the LifeMap database of embryonic development, stem cell research and regenerative medicine, and MalaCards, the human disease database. LifeMap will also market BioTime research products. BioTime's lead product, Hextend, is a blood plasma volume expander manufactured and distributed in the U.S. by Hospira, Inc. and in South Korea by CJ CheilJedang Corporation under exclusive licensing agreements. Additional information about BioTime can be found on the web at http://www.biotimeinc.com.

Forward-Looking Statements

Statements pertaining to future financial and/or operating results, future growth in research, technology, clinical development, and potential opportunities for BioTime and its subsidiaries, along with other statements about the future expectations, beliefs, goals, plans, or prospects expressed by management constitute forward-looking statements. Any statements that are not historical fact (including, but not limited to statements that contain words such as "will," "believes," "plans," "anticipates," "expects," "estimates") should also be considered to be forward-looking statements. Forward-looking statements involve risks and uncertainties, including, without limitation, risks inherent in the development and/or commercialization of potential products, uncertainty in the results of clinical trials or regulatory approvals, need and ability to obtain future capital, and maintenance of intellectual property rights. Actual results may differ materially from the results anticipated in these forward-looking statements and as such should be evaluated together with the many uncertainties that affect the business of BioTime and its subsidiaries, particularly those mentioned in the cautionary statements found in BioTime's Securities and Exchange Commission filings. BioTime disclaims any intent or obligation to update these forward-looking statements.

To receive ongoing BioTime corporate communications, please click on the following link to join our email alert list:

http://phx.corporate-ir.net/phoenix.zhtml?c=83805&p=irol-alerts

Here is the original post:
BioTime CEO Michael D. West to Present at Stem Cells USA & Regenerative Medicine Congress 2012

Posted in Stem Cell Videos | Comments Off on BioTime CEO Michael D. West to Present at Stem Cells USA & Regenerative Medicine Congress 2012

GeneCell International an International Leader in Cord Blood and Dental Pulp Stem Cells Expands to India

Posted: September 19, 2012 at 5:13 pm

Miami, FL (PRWEB) September 19, 2012

GeneCell International, an international leader in the processing and preservation of umbilical cord blood stem cells, announced today the expansion of its services into the country of India.

The company, with its corporate headquarters located in Miami, Florida, privately collects, processes and stores stem cells from umbilical cord blood, cord tissue, dental pulp and adipose tissue that can later be used to treat a variety of diseases. GeneCell International has deep roots in Latin America and more than a decade of experience in helping parents make informed decisions that can lead to potentially life-saving possibilities. The company also plans to collaborate with the medical community to further educate the expecting parents on the benefits stem cells offer.

The expansion into India provides easy and accessible resources for parents looking to preserve viable adult stem cells from both umbilical cord blood and dental pulp, said GeneCells Director of Operations, Jose Cirino. GeneCell believes in offering the best support and advice to the medical community to ensure parents are given the best and most up to date information in making an informed decision on preserving their childs stem cells that can potentially save a life of a family member.

Cord blood is rich in stem cells and there is less risk for the recipients immune system to reject these cells, because certain immune cells found in the cord blood are not mature. These cells can later be used to treat a variety of diseases and blood disorders within the immediate family, are free of ethical debate and patients can get the treatment in about three weeks - as opposed to six to eight for bone marrow from an adult donor, added Dr. Todd R. Flower, Genecells Director of Research and Laboratory Operations.

Alongside its commitment to educating the public on the benefits of stem cell preservation, GeneCell is always on the forefront in providing information for those who may require stem cells for medical treatments. With more than a decade of experience, GeneCell has maintained a large presence in Latin America - promoting the practice and encouraging families to bank their childs stem cells to help protect their loved ones.

About Umbilical Cord Blood Preservation: Umbilical cord blood preservation is a process by which blood is collected from the umbilical cord of a newborn baby and is stored cryogenically in a specially-designated bank. According to the National Marrow Donor Program, cord blood contains cells that can be transfused to a patient to treat various diseases, including lymphoma and leukemia. The list of illnesses that can be treated with cord blood continues to grow. In addition, the cord blood can be used to treat the child from whom the blood was collected as well as some first-degree relatives who are a close genetic match, such as immediate family members. Cord blood banking is regulated by the U.S. Food & Drug Administration and each year more and more parents choose to save their childrens cord blood should the medical need arise.

About Dental Pulp Stem Cells: One of the major advantages one gets from harvesting stem cells from his own body is that there will be no rejection of these cells when they are harvested and subsequently re-implanted. In the future, medical researchers anticipate being able to use technologies derived from stem cell research to treat a wider variety of diseases including Parkinsons, Alzheimers, spinal cord injuries, diabetes, heart diseases, liver disease, multiple sclerosis, muscle damage and many other diseases. The discovery that human dental pulp tissue contains a population of multi-potent mesenchymal dental pulp stem cells with the ability to reproduce quickly for self-renewal and the ability to differentiate into functional odontoblast has revolutionized dental research and opened new avenues in particular for reparative and reconstructive dentistry and tissue engineering in general.

About GeneCell International: GeneCell International, LLC is a trusted provider of collection, processing and storage of umbilical cord blood, dental pulp (teeth), and adipose (fat) from which stem cells can be extracted to treat a variety of diseases and disorders. GeneCell operates state-of-the-art laboratories and storage facilities for the cord blood of thousands of clients, headquartered in Miami, Florida and with local offices in Central Florida, Colombia, Costa Rica, Dominican Republic, Honduras, India, Peru, Puerto Rico, and Venezuela.

For more information and to learn more about cord blood, dental pulp, adipose tissue stem cell banking benefits or other services visit http://www.genecell.com.

Original post:
GeneCell International an International Leader in Cord Blood and Dental Pulp Stem Cells Expands to India

Posted in Stem Cell Videos | Comments Off on GeneCell International an International Leader in Cord Blood and Dental Pulp Stem Cells Expands to India

Discovery of reprogramming signature may help further stem cell-based regenerative medicine research

Posted: September 19, 2012 at 5:13 pm

This shows a colony of induced pluripotent stem cells. Blue fluorescence indicates cell nuclei; red and green are markers of pluripotency. Credit: Image: Courtesy of the Salk Institute for Biological Studies

Salk scientists have identified a unique molecular signature in induced pluripotent stem cells (iPSCs), "reprogrammed" cells that show great promise in regenerative medicine thanks to their ability to generate a range of body tissues.

In this week's Proceedings of the National Academy of Sciences, the Salk scientists and their collaborators at University of California, San Diego, report that there is a consistent, signature difference between embryonic and induced pluripotent stem cells. The findings could help overcome hurdles to using the induced stem cells in regenerative medicine.

"We believe that iPSCs hold a great potential for the treatment of human patients," says Juan Carlos Izpisua Belmonte, a professor in Salk's Gene Expression Laboratory and the senior author on the paper. "Yet we must thoroughly understand the molecular mechanisms governing their safety profile in order to be confident of their function in the human body. With the discovery of these small, yet apparent, epigenetic differences, we believe that we are now one step closer to that goal."

Embryonic stem cells (ESCs) are known for their "pluripotency," the ability to differentiate into nearly any cell in the body. Because of this ability, it has long been thought that ESCs would be ideal to customize for therapeutic uses. However, when ESCs mature into specific cell types, and are then transplanted into a patient, they may elicit immune responses, potentially causing the patient to reject the cells.

In 2006, scientists discovered how to revert mature cells, which had already differentiated into particular cell types, such as skin cells or hair cells, back into a pluripotent state. These "induced pluripotent stem cells" (iPSCs), which could be developed from the patient's own cells, would theoretically carry no risk of immune rejection.

However, scientists found that iPSCs had molecular differences from embryonic stem cells. Specifically, there were epigenetic changes, chemical modifications in DNA that might alter genetic activity. At certain points in the iPSC's genome, scientists could see the presence of different patterns of methyl groups when compared to the genomes of ESCs. It seemed these changes occurred randomly.

Izpisua Belmonte and his colleagues wanted to understand more about these differences. Were they truly random, or was there a discernable pattern?

Unlike previous studies, which had primarily analyzed iPSCs derived from only one mature type of cells (mainly connective tissue cells called fibroblasts), the Salk and UCSD researchers examined iPSCs derived from six different mature cell types to see if there were any commonalities. They discovered that while there were hundreds of unpredictable changes, there were some that remained consistent across the cell types: the same nine genes were associated with these common changes in all iPSCs.

"We knew there were differences between iPSCs and ESCs," says Sergio Ruiz, first author of the paper, "We now have an identifying mark for what they are."

Read the original post:
Discovery of reprogramming signature may help further stem cell-based regenerative medicine research

Posted in Stem Cell Videos | Comments Off on Discovery of reprogramming signature may help further stem cell-based regenerative medicine research

ACT to Present at Terrapinn’s Stem Cells & Regenerative Medicine Congress in Boston

Posted: September 19, 2012 at 12:10 am

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

Advanced Cell Technology, Inc. (ACT) (ACTC), a leader in the field of regenerative medicine, announced today that director of business development, Matthew Vincent, Ph.D., will be presenting at Terrapinns Stem Cells USA and Regenerative Medicine Congress, September 20-21 in Boston.

Dr. Vincents presentation, Advancing stem cell therapies to the clinic: ACT's three cellular therapy programs, will be given on Thursday, Sept. 20 at 3:15 p.m. EDT. Dr. Vincent will discuss the meaning and significance of the results seen thus far in ACTs three ongoing human clinical trials in the U.S. and E.U. for Dry Age-Related Macular Degeneration (Dry AMD) and Stargardts Macular Dystrophy (SMD).

About SMD, Dry AMD and Degenerative Diseases of the Retina

Stargardts Macular Dystrophy (SMD) is one of the most common forms of macular degeneration in the world. SMD causes progressive vision loss, usually starting in children between 10 to 20 years of age. Eventually, blindness results from photoreceptor loss associated with degeneration in the pigmented layer of the retina, called the retinal pigment epithelium or RPE cell layer.

Degenerative diseases of the retina are among the most common causes of untreatable blindness in the world. As many as thirty million people in the United States and Europe suffer from macular degeneration, which represents a $25-30 billion worldwide market that has yet to be effectively addressed. Approximately 10% of people ages 66 to 74 will have symptoms of macular degeneration, the vast majority the dry form of AMD which is currently untreatable. The prevalence increases to 30% in patients 75 to 85 years of age.

About Advanced Cell Technology, Inc.

Advanced Cell Technology, Inc., is a biotechnology company applying cellular technology in the field of regenerative medicine. For more information, visit http://www.advancedcell.com.

Forward-Looking Statements

Statements in this news release regarding future financial and operating results, future growth in research and development programs, potential applications of our technology, opportunities for the company and any other statements about the future expectations, beliefs, goals, plans, or prospects expressed by management constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Any statements that are not statements of historical fact (including statements containing the words will, believes, plans, anticipates, expects, estimates, and similar expressions) should also be considered to be forward-looking statements. There are a number of important factors that could cause actual results or events to differ materially from those indicated by such forward-looking statements, including: limited operating history, need for future capital, risks inherent in the development and commercialization of potential products, protection of our intellectual property, and economic conditions generally. Additional information on potential factors that could affect our results and other risks and uncertainties are detailed from time to time in the companys periodic reports, including the report on Form 10-K for the year ended December 31, 2011. Forward-looking statements are based on the beliefs, opinions, and expectations of the companys management at the time they are made, and the company does not assume any obligation to update its forward-looking statements if those beliefs, opinions, expectations, or other circumstances should change. Forward-looking statements are based on the beliefs, opinions, and expectations of the companys management at the time they are made, and the company does not assume any obligation to update its forward-looking statements if those beliefs, opinions, expectations, or other circumstances should change. There can be no assurance that the Companys clinical trials will be successful.

See the article here:
ACT to Present at Terrapinn’s Stem Cells & Regenerative Medicine Congress in Boston

Posted in Stem Cell Videos | Comments Off on ACT to Present at Terrapinn’s Stem Cells & Regenerative Medicine Congress in Boston

Discovery of reprogramming signature may help overcome barriers to stem cell-based regenerative medicine

Posted: September 19, 2012 at 12:10 am

ScienceDaily (Sep. 18, 2012) Salk scientists have identified a unique molecular signature in induced pluripotent stem cells (iPSCs), "reprogrammed" cells that show great promise in regenerative medicine thanks to their ability to generate a range of body tissues.

In this week's Proceedings of the National Academy of Sciences, the Salk scientists and their collaborators at University of California, San Diego, report that there is a consistent, signature difference between embryonic and induced pluripotent stem cells. The findings could help overcome hurdles to using the induced stem cells in regenerative medicine.

"We believe that iPSCs hold a great potential for the treatment of human patients," says Juan Carlos Izpisua Belmonte, a professor in Salk's Gene Expression Laboratory and the senior author on the paper. "Yet we must thoroughly understand the molecular mechanisms governing their safety profile in order to be confident of their function in the human body. With the discovery of these small, yet apparent, epigenetic differences, we believe that we are now one step closer to that goal."

Embryonic stem cells (ESCs) are known for their "pluripotency," the ability to differentiate into nearly any cell in the body. Because of this ability, it has long been thought that ESCs would be ideal to customize for therapeutic uses. However, when ESCs mature into specific cell types, and are then transplanted into a patient, they may elicit immune responses, potentially causing the patient to reject the cells.

In 2006, scientists discovered how to revert mature cells, which had already differentiated into particular cell types, such as skin cells or hair cells, back into a pluripotent state. These "induced pluripotent stem cells" (iPSCs), which could be developed from the patient's own cells, would theoretically carry no risk of immune rejection.

However, scientists found that iPSCs had molecular differences from embryonic stem cells. Specifically, there were epigenetic changes, chemical modifications in DNA that might alter genetic activity. At certain points in the iPSC's genome, scientists could see the presence of different patterns of methyl groups when compared to the genomes of ESCs. It seemed these changes occurred randomly.

Izpisua Belmonte and his colleagues wanted to understand more about these differences. Were they truly random, or was there a discernable pattern?

Unlike previous studies, which had primarily analyzed iPSCs derived from only one mature type of cells (mainly connective tissue cells called fibroblasts), the Salk and UCSD researchers examined iPSCs derived from six different mature cell types to see if there were any commonalities. They discovered that while there were hundreds of unpredictable changes, there were some that remained consistent across the cell types: the same nine genes were associated with these common changes in all iPSCs.

"We knew there were differences between iPSCs and ESCs," says Sergio Ruiz, first author of the paper, "We now have an identifying mark for what they are."

The therapeutic significance of these nine genes awaits further research. The importance of the current study is that it gives stem cells researchers a new and more precise understanding of iPSCs.

Read more:
Discovery of reprogramming signature may help overcome barriers to stem cell-based regenerative medicine

Posted in Stem Cell Videos | Comments Off on Discovery of reprogramming signature may help overcome barriers to stem cell-based regenerative medicine

America Stem Cell, Inc. Awarded a Phase I STTR to Explore the Therapeutic Potential of Its Platform Technology (ASC …

Posted: September 18, 2012 at 12:11 am

SAN ANTONIO--(BUSINESS WIRE)--America Stem Cell, Inc. (ASC) today announced that it has been awarded an Advanced Technology Small Business Technology Transfer Research (STTR) grant from the National Heart Lung and Blood Institute at the National Institutes of Health. This grant will be conducted in collaboration with scientists at the Wake Forest Institute of Regenerative Medicine (WFIRM) in Winston-Salem, NC, and will explore the combination of two technologies: ASC-101 developed by America Stem Cell and amniotic fluid-derived stem cells discovered and pioneered by Dr. Shay Soker and colleagues at WFIRM. We will examine the effect of ASC-101-treated amniotic fluid-derived stem cells in an experimental model of compartment syndrome. Compartment syndrome results from a variety of injuries such as fractures, contusions, burns, trauma, post-ischemic swelling and blast injuries such as gunshot wounds. If not addressed quickly, it can lead to considerable loss of muscle tissue. Musculoskeletal disorders are the primary cause of disability in the United States with associated costs of more than $800 billion annually. In addition to civilian injuries, more than 42,000 soldiers have been injured since the beginning of the Iraq and Afghanistan wars: the majority of these injuries were musculoskeletal in nature.

The successful combination of ASC-101 with amniotic fluid-derived stem cells would be directly relevant to improving the treatment of muscle damage that occurs following compartment syndrome as well as multiple other types of injuries.

America Stem Cell has demonstrated that ASC-101 enhances the ability of stem cells to migrate to their target tissue. While most companies are concerned with the type of cells used for cell therapy (i.e. the hardware), America Stem Cell addresses how to get the cells to go where they are needed most (i.e. the software). With this award, America Stem Cell will expand the potential for therapeutic application of ASC-101 with amniotic fluid-derived stem cells. According to Dr. Leonard Miller, the Co-Principal Investigator on the grant, The successful combination of ASC-101 with amniotic fluid-derived stem cells would be directly relevant to improving the treatment of muscle damage that occurs following compartment syndrome as well as multiple other types of injuries.

America Stem Cell, Inc. is a clinical stage company that is in clinical trials at the University of Texas M.D. Anderson Cancer Center for improving clinical outcomes for cancer patients undergoing hematopoietic stem cell transplantation. This award enables America Stem Cell to expand the development of ASC-101 to yet another cell type. Lynnet Koh, CEO of America Stem Cell, noted, The combination of ASC-101 with amniotic fluid-derived stem cells could synergistically enhance the therapeutic and regenerative capacity of these cells and most importantly provide an off-the-shelf, effective solution for tissue damage due to multiple types of injuries or diseases. ASC-101 is a transformative technology with the potential to improve clinical outcomes for patients undergoing a wide variety of cell therapies for the treatment of diseases such as graft versus host disease, diabetic complications, and ischemic diseases such as myocardial infarctions, retinopathy and critical limb ischemia. America Stem Cell has established a number of collaborations examining the potential of ASC-101 to improve cell therapies for multiple clinical conditions using a wide variety of cell types.

About America Stem Cell, Inc.

America Stem Cell is a privately held biotechnology company based in San Antonio, TX, with offices in San Diego, CA, and is dedicated to the development and commercialization of enabling technologies to enhance and expand the therapeutic potential of cell therapies. The key technology platforms (ASC-101 and ASC-102) are designed to improve the homing and engraftment of cells to target organs. ASC-101 is currently in clinical trials to improve the therapeutic potential of hematopoietic stem cells for patients in need of hematopoietic stem cell transplantation. Additionally, these technologies have the potential to enhance the efficacy of cell therapies for the treatment of inflammation from chemotherapy/radiation, autoimmune diseases, and ischemic diseases including myocardial infarction and stroke. America Stem Cell has partnerships and collaborations with Kyowa Hakko Kirin, Spectrum Medical Innvoations, Florida Biologix, and various medical research institutions including the University of Texas M.D. Anderson Cancer Center, Oklahoma Medical Research Foundation, Fred Hutchinson Cancer Center,,University of California San Diego, Sanford-Burnham Institute, Indiana University, Juvenile Diabetes Research Foundation, as well as corporate partnerships. For additional information, please contact Lynnet Koh at 210-410-6427, or view http://www.americastemcell.com.

Go here to read the rest:
America Stem Cell, Inc. Awarded a Phase I STTR to Explore the Therapeutic Potential of Its Platform Technology (ASC ...

Posted in Stem Cell Videos | Comments Off on America Stem Cell, Inc. Awarded a Phase I STTR to Explore the Therapeutic Potential of Its Platform Technology (ASC …

At the Right Place at the Right Time – New Insights into Muscle Stem Cells

Posted: September 18, 2012 at 12:11 am

17.09.2012 - (idw) Max-Delbrck-Centrum fr Molekulare Medizin (MDC) Berlin-Buch

Muscles have a pool of stem cells which provides a source for muscle growth and for regeneration of injured muscles. The stem cells must reside in special niches of the muscle for efficient growth and repair. The developmental biologists Dr. Dominique Brhl and Prof. Carmen Birchmeier of the Max Delbrck Center for Molecular Medicine (MDC) Berlin-Buch have elucidated how these stem cells colonize these niches. At the same time, they show that the stem cells weaken when, due to a mutation, they locate outside of the muscle fibers instead of in their stem cell niches (Developmental Cell, http://dx.doi.org/10.1016/j.devcel.2012.07.014)*. Muscle stem cells, also called satellite cells, colonize a niche that is located between the plasma membrane of the muscle cell and the surrounding basal lamina. Already in newborns these niches contain satellite cells from which both muscle cells and new stem cells can be generated.

Weakened stem cells In the present study Dr. Brhl and Professor Birchmeier showed that mouse muscle progenitor cells lacking components of the Notch signaling pathway cannot colonize their niche. Instead the muscle progenitor cells locate in tissue between the muscle fibers. The developmental biologists view this as the cause for the weakening of the muscles. The stem cells that are in the wrong place are no longer as potent as they originally were and hardly contribute to muscle growth.

In addition, the Notch signaling pathway has a second function in muscle development. It prevents the differentiation of stem cells into muscle cells through suppression of the muscle developmental factor MyoD and thus ensures that there will always be a pool of stem cells for muscle repair and regeneration. In the future this work could gain in importance for research on muscle regeneration and muscle weakness.

Contact: Barbara Bachtler Press Department Max Delbrck Center for Molecular Medicine (MDC) Berlin-Buch in the Helmholtz Association Robert-Rssle-Strae 10; 13125 Berlin, Germany Phone: +49 (0) 30 94 06 - 38 96; Fax: +49 (0) 30 94 06 - 38 33 e-mail: presse@mdc-berlin.de http://www.mdc-berlin.de/ function fbs_click() {u=location.href;t=document.title;window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');return false;} html .fb_share_link { padding:2px 0 0 20px; height:16px; background:url(http://static.ak.facebook.com/images/share/facebook_share_icon.gif?6:26981) no-repeat top left; } Share on Facebook

More:
At the Right Place at the Right Time - New Insights into Muscle Stem Cells

Posted in Stem Cell Videos | Comments Off on At the Right Place at the Right Time – New Insights into Muscle Stem Cells

Page 210«..1020..209210211212..220230..»