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A Media Event on Clinical Developments in Gene and Cell Therapy

Posted: May 3, 2012 at 4:11 am

Milwaukee, WI (PRWEB) May 02, 2012

Academic and industry leaders in gene and cell therapy will be featured at a Media Event in Philadelphia, PA on May 15, 2012, immediately preceding the 15th Annual Meeting of the American Society of Gene and Cell Therapy (ASGCT) on May 16-19, 2012. The event will focus on recent clinical developments in targeted biotherapeutics for various diseases.

Members of the media will also receive complimentary full-access registration to the ASGCT 15th Annual Meeting at the Pennsylvania Convention. To complete your registration to the Media Event and the Annual Meeting, please visit the ASGCT website.

2:00 pm 2:20 pm: Gene and cell-based immunotherapy for cancer Many cancers are known to acquire the ability to suppress anti-tumor immune responses in the host. The genetically modified cells developed and used in this clinical trial are designed to reawaken immune cells that have been suppressed by the leukemia and stimulate the generation of so-called memory T cells, which can provide ongoing protection against recurrence. Although long-term effectiveness of this novel treatment is not yet known, the doctors have found that months after infusion, the new cells had multiplied and continued their seek-and-destroy mission against cancerous cells throughout the patients bodies. The new paradigm provides a tumor-attack roadmap for the treatment of other cancers including lung, myeloma, ovarian cancer and melanoma.

Carl June, MD is currently the Director of Translational Research at the Abramson Cancer Center,, an Investigator of the Abramson Family Cancer Research Institute, and a tenured Professor of Pathology and Laboratory Medicine at the Perelman School of Medicine of the University of Pennsylvania.

2:20 pm 2:30 pm: Question and answer period

2:30 pm 2:50 pm: Gene therapy for hemophilia B Hemophilia B is an X-linked bleeding disorder caused by a deficiency of blood coagulation Factor IX, and patients need to be infused with the newly developed long-acting protein concentrates twice a month. Advances in gene therapy using intravenous infusion of an AAV vector expressing human Factor IX in a clinical trial on hemophilia patients have significantly improved circulation of Factor IX levels that transformed their disease from severe hemophilia to mild hemophilia. Other strategies are also under development that may confer the ability to correct the disease permanently by gene therapy.

Katherine High, MD is the William H. Bennett Professor of Pediatrics at the University of Pennsylvania School of Medicine, an Investigator of the Howard Hughes Medical Institute and Director of the Center for Cellular and Molecular Therapeutics at the Children Hospital of Philadelphia. Dr. High has pioneered safe and effective clinical translation of genetic therapies for inherited disorders including hemophilia B, and she is a Past President of the American Society of Gene and Cell Therapy.

2:50 3:00 pm: Question and answer period

3:00 pm 3:20 pm: Gene and cell-based therapy for severe combined immunodeficiency Severe combined immunodeficiency (ADA-SCID, a.k.a. bubble boy disease) is a rare disorder of immunity and without treatment; children affected with ADA-SCID will succumb to infections within the first two years of life. Over the past years >40 patients have been treated with gene-corrected hematopoietic stem cell transplantation, which has led to the regeneration of immune cells and the reconstitution of immune function in >70% of the patients. While hematopoietic stem cell transplantation from a matched donor remains the therapy of choice for ADA-SCID, the results obtained by the current clinical trials have indicated that gene and cell therapy should be considered as the first treatment option in the absence of a matched donor.

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Local woman donates stem cells through national registry

Posted: May 2, 2012 at 10:11 pm

PLATTSBURGH Lois Wenger cites her faith in God as the underlying factor in her ability to help others in need, and she has never faltered in lending a helping hand.

Or in this case some much-needed bone marrow.

Wenger, who works as a support specialist in CVPH Medical Center's Information Services and Support Department, has been donating blood for years. Her blood type is O-negative, which is the universal blood type and can be used by most people in need of a transfusion.

"My older sister is a medical technologist, so it's always been a regular practice (to give blood)," Wenger said.

That practice expanded a few years ago when Wenger heard that the CVPH Blood Donor Center was working with the Rhode Island Blood Donor Center on a plan to increase the national database for bone-marrow donations.

"Only about 5 million people (nationally) were in the database at that time," said Nancy Roberts, a registered nurse at the CVPH Blood Donor Center. "We thought it would be a good idea to send out the word (for needed donors) in our region."

During the past few years, the Donor Center has hosted a bone-marrow registration at the annual Relay for Life fundraising program for the American Cancer Society.

Those successful drives, along with registrations made through the Blood Donor Center, have resulted in about 700 people from the North Country now being listed on the bone-marrow donation registry.

Those potential donors remain anonymous while their specific tissue type (collected by a simple cheek swab when registering) is recorded via bar code.

There is nothing else for the potential donor to do unless they are notified of a potential match anywhere in the country and even across the globe.

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Cosmetic surgery practice’s stem cell use runs afoul of FDA

Posted: May 2, 2012 at 10:11 pm

The U.S. Food and Drug Administration has cited a plastic surgery practice over several violations tied to its use of adult stem cells for breast augmentation and other procedures to manufacturing violations.

In a warning letter to Dr. Thomas E. Young, the owner and medical director of Young Medical Spa, the FDAs Center for Biologics Evaluation and Research said the company had significantly altered adult stem cells as part of the process of converting them from adipose tissue.

The FDA allows companies to derive adult stem cells from structural and adipose tissue on condition that the structure of the stem cells is not significantly changed. It permits the use of stem cells to be derived from adipose tissue from one person and injected back into the same person. If the regulator concludes the process significantly changes the adipose tissue, it considers it a biological product that has a much more rigorous set of criteria to meet.

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The company singled out a product it uses in breast augmentation procedures containing adipose-derived stem cells as a violation of the regulators rules.

During a factory inspection of the practices Lansdale, Pennsylvania and South Center Valley, Pennsylvania offices between December 2011 and January this year, the regulator said it found numerous violations of good manufacturing and good tissue practices. Among the violations listed in the letter were its failure to keep a record of investigations into cases in which patients experienced adverse reactions. It also did not ensure appropriate laboratory testing of each batch of drug product required to be free of objectionable microorganisms, the letter posted on the regulators website said.

In at least six cases, the letter said, the company failed to investigate adverse reactions such as fever, redness, soreness, cyst formation, mastitis and infection following the procedures.

If the company fails to adequately respond to the FDAs letter, it could lead to regulatory action being taken without further notice. That action could include seizure and/or injunction, the letter said.

The FDAs action follows a letter sent to New York-based IntelliCell BioSciences in March raising some of the same concerns with the stem cell company and would seem to reflect a crackdown by the regulator.

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Delhi – [ Min 20.5 °C

Posted: May 2, 2012 at 10:11 pm

Shilpa Shetty and Raj Kundra pose for the shutterbugs. (UNI Photo)

Gearing up for the most exciting phase of her life, motherhood, the 36-year-old said, "Motherhood is the best thing that can happen to a woman, it brings a sense of responsibility".

Shilpa would now also be actively involved in creating awareness among would-be parents on the importance of stem cell banking as the brand ambassador of CordLife, Asia's largest stem cell banking network.

With tremendous potential in curing critical diseases, stem cell therapy is regarded as the future of medical science.

Stem cells extracted from the cord blood have positively treated conditions like leukemia, lymphoma, cerebral palsy and thalassemia major.

"As someone who is looked upon as a role model and as a very successful woman in her own right, her decision to bank her baby's stem cells would have the right influence and impact on the would-be parents," Meghnath Roy Chowdhury, MD of CordLife said.

The actress who is now one of the co-owners of the IPL franchise cricket team Rajasthan Royals, had shot to global fame after winning the British Celebrity Big Brother TV show in 2007.

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Dartmouth-Hitchcock research offers new hope for PAD sufferers

Posted: May 2, 2012 at 10:11 pm

Public release date: 2-May-2012 [ | E-mail | Share ]

Contact: Rick Adams clarence.r.adams@hitchcock.org 603-653-1913 Dartmouth-Hitchcock Medical Center

Lebanon, NH - Research led by vascular surgeons at Dartmouth-Hitchcock may offer new hope to sufferers of peripheral artery disease, the cause of nearly 60,000 lower-limb amputations annually, through the use of a patient's own stem cells.

Richard J. Powell MD, chief of vascular surgery at Dartmouth-Hitchcock, is the principal investigator on a national study involving 550 patients at 80 sites around the country of so-called "no option" patients, for whom the disease is so advanced that amputation is the only available treatment.

Powell's study is now in a three-year, third-stage clinical trial, after second-stage trials showed remarkable success at treating patients with CLI. The final results of the second-stage clinical trial have been published in the April, 2012, issue of Molecular Therapy.

Peripheral artery disease (PAD) afflicts more than 9 million patients in the United States. The condition results from blockages in blood vessels caused by atherosclerosis hardening of the arteries which can be a consequence of diabetes, high cholesterol, smoking, genetic predisposition, and other circumstances. In many cases, endovascular therapies such as insertion of stents or bypass surgery similar to surgical processes used to treat blockages in the arteries of the heart are used to reintroduce blood flow to the legs. But in about 150,000 patients with the most-severe forms of PAD, called critical limb ischemia or CLI, the disease is so extensive that endovascular therapy isn't an option. That's where Powell's stem cell study comes in.

"All of us have stem cells in our bone marrow, and these stem cells can be utilized to repair other parts of our bodies," says Powell. "By taking the patient's own stem cells and injecting them into the ischemic leg, our hope is that we will then improve the blood flow in that part of the leg."

In the study, bone marrow is removed from the patient's hip, and then sent to a lab where stem cells are separated from the marrow and incubated over a two-week period, allowing more stem cells to grow. The stem cells are then re-injected intramuscularly into about 20 different spots on the patient's leg.

"We found that patients who received the stem cell therapy had a significantly lower incidence of amputation at six months than patients who received a placebo," said Powell.

After six months of the second-stage trials, approximately half of the patients who received a placebo died, required an amputation or saw their leg wounds worsen. Of those receiving the stem cell therapy, only a quarter died, required amputation, or saw their wounds worsen. Many showed significant improvement in blood flow in the ischemic limb.

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Improved adult-derived human stem cells have fewer genetic changes than expected

Posted: May 2, 2012 at 10:11 pm

Public release date: 30-Apr-2012 [ | E-mail | Share ]

Contact: Vanessa McMains vmcmain1@jhmi.edu 410-502-9410 Johns Hopkins Medical Institutions

A team of researchers from Johns Hopkins University and the National Human Genome Research Institute has evaluated the whole genomic sequence of stem cells derived from human bone marrow cellsso-called induced pluripotent stem (iPS) cellsand found that relatively few genetic changes occur during stem cell conversion by an improved method. The findings, reported in the March issue of Cell Stem Cell, the official journal of the International Society for Stem Cell Research (ISSCR), will be presented at the annual ISSCR meeting in June.

"Our results show that human iPS cells accrue genetic changes at about the same rate as any replicating cells, which we don't feel is a cause for concern," says Linzhao Cheng, Ph.D., a professor of medicine and oncology, and a member of the Johns Hopkins Institute for Cell Engineering.

Each time a cell divides, it has the chance to make errors and incorporate new genetic changes in its DNA, Cheng explains. Some genetic changes can be harmless, but others can lead to changes in cell behavior that may lead to disease and, in the worst case, to cancer.

In the new study, the researchers showed that iPS cells derived from adult bone marrow cells contain random genetic changes that do not specifically predispose the cells to form cancer.

"Little research was done previously to determine the number of DNA changes in stem cells, but because whole genome sequencing is getting faster and cheaper, we can now more easily assess the genetic stability of these cells derived by various methods and from different tissues," Cheng says. Last year, a study published in Nature suggested higher than expected cancer gene mutation rates in iPS cells created from skin samples, which, according to Cheng, raised great concerns to many in the field pertaining to usefulness and safety of the cells. This study analyzed both viral and the improved, nonviral methods to turn on stem cell genes making the iPS cells

To more thoroughly evaluate the number of genetic changes in iPS cells created by the improved, non-viral method, Cheng's team first converted human blood-forming cells or their support cells, so-called marrow stromal cells (MSCs) in adult bone marrow into iPS cells by turning on specific genes and giving them special nutrients. The researchers isolated DNA from--and sequenced--the genome of each type of iPS cells, in comparison with the original cells from which the iPS cells were derived.

Cheng says they then counted the number of small DNA differences in each cell line compared to the original bone marrow cells. A range of 1,000 to 1,800 changes in the nucleic acid "letters" A, C, T and G occurred across each genome, but only a few changes were found in actual genes--DNA sequences that act as blueprints for our body's proteins. Such genes make up two percent of the genome.

The blood-derived iPS cells contained six and the MSC-derived iPS cells contained 12 DNA letter changes in genes, which led the researchers to conclude that DNA changes in iPS cells are far more likely to occur in the spaces between genes, not in the genes themselves.

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Hamilton Thorne Receives FDA Clearance on Its Multi-Pulse Software for Clinical Applications

Posted: May 2, 2012 at 10:11 pm

BEVERLY, MA and TORONTO, ON--(Marketwire -05/02/12)- Hamilton Thorne Ltd. (HTL.V - News), a leading provider of precision laser devices and advanced image analysis systems for the fertility, stem cell and developmental biology research markets, today announced that the Company's Multi-Pulse software has received FDA clearance for performing embryo biopsy in clinical settings. The Multi-Pulse software will come standard with Hamilton Thorne's best-in-class LYKOS clinical laser system and as an option on the legacy ZILOS-tk system in certain markets.

The Multi-Pulse feature provides rapid, repeated firing of the laser to facilitate removal of cells from an embryo during the trophectoderm biopsy process. Trophectoderm biopsy is considered one of the best methods used to remove cells from the embryos of patients undergoing pre-implantation genetic diagnosis (PGD) to screen for genetic disease or aneuploidy. Prior to release of the Multi-pulse software, individual laser shots were required to weaken or break the junctions between the trophectoderm cells so that they can be aspirated into the biopsy micropipette. The significant advantage of Multi-Pulse is that one press of the remote footswitch initiates multiple laser pulses in rapid succession for fast and easy cell separation, thereby limiting the amount of time the embryo spends outside the incubator.

"The Multi-Pulse software gives our lasers an automated, precise tool that enables rapid trophectoderm biopsy," said Diarmaid Douglas-Hamilton, Chief Technology Officer of Hamilton Thorne Ltd. "Obtaining FDA clearance is a significant achievement for Hamilton Thorne, and with Multi-Pulse coming standard on our LYKOS laser system, we can offer a sophisticated laser system that is truly unique to the clinical market."

Professor Barry Behr, Co-Director, REI/IVF Program, Department of Obstetrics and Gynecology at the Stanford University School of Medicine, a long-time user of Hamilton Thorne lasers and a pioneer in trophectoderm biopsy, commented, "The Multi-Pulse capability, which provides the user with the ability to automatically fire the laser multiple times at relatively low power, will contribute significantly to the efficiency and safety of trophectoderm biopsy."

David Wolf, Hamilton Thorne's President and Chief Executive Officer, added, "We saw our sales of clinical lasers significantly grow in the US in 2010 and 2011, due in part to the increased adoption of trophectoderm biopsy as an accepted procedure. With the clearance of our Multi-Pulse software, we expect to see that trend continue to accelerate."

About Hamilton Thorne Ltd. (www.hamiltonthorne.com)

Hamilton Thorne designs, manufactures and distributes precision laser devices and advanced imaging systems for the fertility, stem cell and development biology research markets. It provides novel solutions for Life Science that reduce cost, increase productivity, improve results and enable research breakthroughs in regenerative medicine, stem cell research and fertility markets. Hamilton Thorne's laser products attach to standard inverted microscopes and operate as robotic micro-surgeons, enabling a wide array of scientific applications and IVF procedures. Its imaging systems improve outcomes in human IVF clinics and animal breeding facilities and provide high-end toxicology analyses.

Hamilton Thorne's growing customer base includes pharmaceutical companies, biotechnology companies, fertility clinics, university research centers, and other commercial and academic research establishments worldwide. Current customers include world-leading research labs such as Harvard, MIT, Yale, McGill, DuPont, Monsanto, Charles River Labs, Jackson Labs, Merck, Novartis, Pfizer, and Oxford and Cambridge.

Neither the Toronto Venture Exchange, nor its regulation services provider (as that term is defined in the policies of the exchange), accepts responsibility for the adequacy or accuracy of this release.

Certain information in this press release may contain forward-looking statements. This information is based on current expectations that are subject to significant risks and uncertainties that are difficult to predict. Actual results might differ materially from results suggested in any forward-looking statements. The Company assumes no obligation to update the forward-looking statements, or to update the reasons why actual results could differ from those reflected in the forward-looking statements unless and until required by securities laws applicable to the Company. Additional information identifying risks and uncertainties is contained in filings by the Company with the Canadian securities regulators, which filings are available at http://www.sedar.com.

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Stem cell therapy shows promise in fight against HIV

Posted: May 2, 2012 at 10:11 pm

ScienceDaily (May 2, 2012) UC Davis Health System researchers are a step closer to launching human clinical trials involving the use of an innovative stem cell therapy to fight the virus that causes AIDS.

In a paper published in the May issue of the Journal of Virology, the UC Davis HIV team demonstrated both the safety and efficacy of transplanting anti-HIV stem cells into mice that represent models of infected patients. The technique, which involves replacing the immune system with stem cells engineered with a triple combination of HIV-resistant genes, proved capable of replicating a normally functioning human immune system by protecting and expanding HIV-resistant immune cells. The cells thrived and self-renewed even when challenged with an HIV viral load.

"We envision this as a potential functional cure for patients infected with HIV, giving them the ability to maintain a normal immune system through genetic resistance," said lead author Joseph Anderson, an assistant adjunct professor of internal medicine and a stem cell researcher at the UC Davis Institute for Regenerative Cures. "Ideally, it would be a one-time treatment through which stem cells express HIV-resistant genes, which in turn generate an entire HIV-resistant immune system."

To establish immunity in mice whose immune systems paralleled those of patients with HIV, Anderson and his team genetically modified human blood stem cells, which are responsible for producing the various types of immune cells in the body.

Building on work that members of the team have pursued over the last decade, they developed several anti-HIV genes that were inserted into blood stem cells using standard gene-therapy techniques and viral vectors (viruses that efficiently insert the genes they carry into host cells). The resulting combination vector contained:

These engineered blood stem cells, which could be differentiated into normal and functional human immune cells, were introduced into the mice. The goal was to validate whether this experimental treatment would result in an immune system that remained functional, even in the face of an HIV infection, and would halt or slow the progression toward AIDS.

The results were successful on all counts.

"After we challenged transplanted mice with live HIV, we demonstrated that the cells with HIV-resistant genes were protected from infection and survived in the face of a viral challenge, maintaining normal human CD4 levels," said Anderson. CD4+ T-cells are a type of specialized immune cell that HIV attacks and uses to make more copies of HIV.

"We actually saw an expansion of resistant cells after the viral challenge, because other cells which were not resistant were being killed off, and only the resistant cells remained, which took over the immune system and maintained normal CD4 levels," added Anderson.

The data provided from the study confirm the safety and efficacy of this combination anti-HIV lentiviral vector in a hematopoietic stem cell gene therapy setting for HIV and validated its potential application in future human clinical trials. The team has submitted a grant application for human clinical trials and is currently seeking regulatory approval, which is necessary to move on to clinical trials.

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Study using stem cell therapy shows promise in fight against HIV

Posted: May 2, 2012 at 10:11 pm

Public release date: 1-May-2012 [ | E-mail | Share ]

Contact: Charles Casey charles.casey@ucdmc.ucdavis.edu 916-734-9048 University of California - Davis Health System

UC Davis Health System researchers are a step closer to launching human clinical trials involving the use of an innovative stem cell therapy to fight the virus that causes AIDS.

In a paper published in the May issue of the Journal of Virology, the UC Davis HIV team demonstrated both the safety and efficacy of transplanting anti-HIV stem cells into mice that represent models of infected patients. The technique, which involves replacing the immune system with stem cells engineered with a triple combination of HIV-resistant genes, proved capable of replicating a normally functioning human immune system by protecting and expanding HIV-resistant immune cells. The cells thrived and self-renewed even when challenged with an HIV viral load.

"We envision this as a potential functional cure for patients infected with HIV, giving them the ability to maintain a normal immune system through genetic resistance," said lead author Joseph Anderson, an assistant adjunct professor of internal medicine and a stem cell researcher at the UC Davis Institute for Regenerative Cures. "Ideally, it would be a one-time treatment through which stem cells express HIV-resistant genes, which in turn generate an entire HIV-resistant immune system."

To establish immunity in mice whose immune systems paralleled those of patients with HIV, Anderson and his team genetically modified human blood stem cells, which are responsible for producing the various types of immune cells in the body.

Building on work that members of the team have pursued over the last decade, they developed several anti-HIV genes that were inserted into blood stem cells using standard gene-therapy techniques and viral vectors (viruses that efficiently insert the genes they carry into host cells). The resulting combination vector contained:

a human/rhesus macaque TRIM5 isoform, which disrupts HIV from uncoating in the cytoplasm a CCR5 short hairpin RNA (shRNA), which prevents certain strains of HIV from attaching to target cells a TAR decoy, which stops HIV genes from being expressed inside of the cell by soaking up a critical protein needed for HIV gene expression These engineered blood stem cells, which could be differentiated into normal and functional human immune cells, were introduced into the mice. The goal was to validate whether this experimental treatment would result in an immune system that remained functional, even in the face of an HIV infection, and would halt or slow the progression toward AIDS.

The results were successful on all counts.

"After we challenged transplanted mice with live HIV, we demonstrated that the cells with HIV-resistant genes were protected from infection and survived in the face of a viral challenge, maintaining normal human CD4 levels," said Anderson. CD4+ T-cells are a type of specialized immune cell that HIV attacks and uses to make more copies of HIV.

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South Korea Steps Up Stem-Cell Work

Posted: May 2, 2012 at 10:11 pm

Nature | Health

Regenerative medicine gets a cash boost from the nation's health ministry, but stricter regulations are needed to ensure safety

May 1, 2012

By Soo Bin Park of Nature magazine

Seoul, South Korea

The South Korean health ministry announced last month that research into stem cells and regenerative medicine will receive a funding boost of 33 billion won (US$29 million) in 2012, four times that given in 2011. Overall, six different ministries will invest 100 billion won in stem-cell research this year.

Until last year, public investment in stem cells in South Korea was relatively low and targeted mainly at basic research. But the country's Ministry of Health and Welfare is now expanding its support for clinical research on stem cells, with the money being used to link basic research to intermediate or clinical studies. The aim is to commercialize the research at an early stage.

"From the current research atmosphere and infrastructure, the government has judged that stem-cell studies are now maturing," says Hyung Min Chung, president of Seoul-based biotechnology firm Cha Bio and Diostech and an adviser on the budget plan. He adds that his company is particularly pleased that government investment decisions on developing stem-cell therapies will be made more quickly.

Target market

The government money will be allocated to two areas: rare or incurable diseases for which there is little incentive for private investment, such as spinal cord damage; and common chronic conditions, such as arthritis, for which the aim is to help South Korean companies to capture part of the large potential market for treatments.

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