Navigation Links
Research Indicates Geron's Human Embryonic Stem Cell-Based,Therapeutic for Spinal Cord Injury Evades Direct Attack by the,Human Immune System

MENLO PARK, Calif.--(BUSINESS WIRE)--Jun 11, 2007 - Geron Corporation (Nasdaq:GERN) today announced the presentation of research studies indicating that GRNOPC1, the company's human embryonic stem cell (hESC)-based therapeutic for the treatment of spinal cord injury, evades a direct attack by the human immune system.

Presented by Geron scientist Ross Okamura at the Federation of Clinical Immunology Societies meeting in San Diego, the findings could mean that patients treated with GRNOPC1 would require significantly lower doses and/or shorter courses of immunosuppression than what are required for patients who undergo solid organ transplants.

"The results imply that our cell-based therapeutic, unlike traditional solid organ transplants, is minimally recognized by the human immune system," said Thomas B. Okarma, Ph.D, M.D., Geron's president and chief executive officer. "Because GRNOPC1 cells are allogenic, it was expected that they would be recognized and destroyed by multiple immune rejection modulators. This isn't the case. The benefit to patients is that a reduction in the requirement for immunosuppression decreases the potential for untoward side effects that are common with those types of drugs."

The data indicate that GRNOPC1 cells have low susceptibility to both direct cell and antibody-mediated immune responses. The data also show that GRNOPC1 cells do not widely express non-human antigens, such as Neu5GC, that might have originated from mouse feeder cells to which the original hESC cell line was exposed in its initial derivation. Expression of such non-human antigens would typically lead to lysis by antibodies present in the sera of normal individuals.

In the studies, GRNOPC1 cells were tested for susceptibility to both immune effector cells and sera from normal healthy individuals. GRNOPC1 cells stimulated very low levels of T cell proliferation. Allogenic T cell proliferation is a standard measure of immune recognition of foreign transplanted tissue. Even when GRNOPC1 cells were exposed to proinflammatory cytokines, such as gamma interferon or TNF alpha, allogeneic T cell proliferation was not induced.

In addition, GRNOPC1 cells were not lysed by natural killer cells, the "innate" arm of the immune system. Finally, GRNOPC1 cells were largely resistant to killing by antibodies present in the sera of normal healthy individuals. Sera from eight of 10 individuals failed to induce the killing of GRNOPC1 cells. The sera from the remaining two individuals induced only 10% GRNOPC1 cell lysis.

GRNOPC1 is an allogeneic population of cells containing oligodendroglial progenitors that is intended for transplantation into the lesion site of patients with spinal cord injury to induce tissue repair. Geron's development plan for the product calls for the filing of an Investigational New Drug (IND) Application with the U.S. Food and Drug Administration later this year pending the outcome of ongoing safety studies.

Geron is developing first-in-class biopharmaceuticals for the treatment of cancer and chronic degenerative diseases, including spinal cord injury, heart failure, diabetes and HIV/AIDS. The company is advancing an anti-cancer drug and a cancer vaccine that target the enzyme telomerase through multiple clinical trials. Geron is also the world leader in the development of human embryonic stem cell-based therapeutics, with its spinal cord injury treatment anticipated to be the first product to enter clinical development. For more information, visit www.geron.com.

This news release may contain forward-looking statements made pursuant to the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that such forward-looking statements in this press release regarding potential applications of Geron's human embryonic stem cell technology constitute forward-looking statements that i nvolve risks and uncertainties, including, without limitation, risks inherent in the development and commercialization of potential products, uncertainty of clinical trial results or regulatory approvals or clearances, need for future capital, dependence upon collaborators and maintenance of our intellectual property rights. Actual results may differ materially from the results anticipated in these forward-looking statements. Additional information on potential factors that could affect our results and other risks and uncertainties are detailed from time to time in Geron's periodic reports, including the quarterly report on Form 10-Q for the quarter ended March 31, 2007.

Contact

Geron
David L. Greenwood, 650-473-7765
Chief Financial Officer
info@geron.com
or
Russo Partners, LLC
David Schull, 858-717-2310 (Media)
david.schull@russopartnersllc.com
Matthew Haines, 212-845-4235 (Investors)
matthew.haines@russopartnersllc.com


'"/>




Related medicine technology :

1. NIEHS Researchers Identify Enzyme Critical in DNA Replication
2. Stanford Researchers Find Brain Pathway of Depression in Rats
3. Suven Life Sciences Presenting Pre-clinical data of their NCE’s SUVN-502 and SUVN-507at International Brain Research Organization (IBRO) 2007 World Congress of Neuroscience
4. From Clinical Cancer Research: Rethinking Therapeutic Cancer Vaccine Trials
5. Researchers Discover Method for Identifying How Cancer Evades the Immune System
6. Infertile Voice Supports Stem Cell Research: RESOLVE Calls for Patient Options in Using Frozen Embryos
7. Fact Sheet: Advancing Stem Cell Research While Respecting Moral Boundaries
8. President Bush Ignores Americas Plea for Support of Stem Cell Research
9. Researchers Discover Gene For Rare Skin Disorder
10. The Christopher and Dana Reeve Foundation Expresses Disappointment Over President Bushs Veto of the Stem Cell Research Enhancement Act
11. Research on New Treatment for Neglected Disease Published in The New England Journal of Medicine
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/12/2017)... June 12, 2017 Kineta, Inc., a biotechnology company ... Kineta Vice President of R&D and Head of Virology ... Pandemic Preparedness for the Northwest and Beyond meeting sponsored ... June 14, 2017 from 8:30-10:30 AM PDT at the Agora ... Dr. Bedard will be joined by other leaders ...
(Date:6/8/2017)... Fla. , June 8, 2017  Less than ... that hit more than 200,000 companies, including hospital networks, ... being heralded as one of the largest online extortion ... in the healthcare market, it is imperative that providers ... protect their data from this — and many other ...
(Date:6/7/2017)... June 6, 2017  Diplomat Specialty Infusion Group, a brand of ... to its Iowa location. The ... now features an ISO 7 cleanroom—the standard needed to compound ... a low level of pollutants. ... consumers and better serve our Iowa patients," ...
Breaking Medicine Technology:
(Date:6/20/2017)... DIEGO, California (PRWEB) , ... June 20, 2017 ... ... product documentation and help content solutions for the enterprise, is proud to announce ... properties, including CRM, e-commerce, ticketing systems, company websites, and more to provide a ...
(Date:6/20/2017)... Cincinnati, Ohio (PRWEB) , ... June 20, 2017 ... ... with gum disease in Cincinnati, OH for leading-edge care, whether or ... advances in laser dentistry. Using the BIOLASE WaterLase® iPlus™ laser, she targets bacteria ...
(Date:6/20/2017)... ... June 20, 2017 , ... With certifications and experience ... in Denville, NJ, Drs. Adam and Hal Kimowitz are currently accepting new patients at ... traditional orthodontics can cause for some patients, which is why they offer the latest ...
(Date:6/20/2017)... ... June 20, 2017 , ... This year, participants ... focused on finding product improvements that could reduce the occurrence of unplanned extubations ... need help breathing or to provide medication. Sometimes, patient movement can cause unplanned ...
(Date:6/20/2017)... , ... June 20, 2017 , ... ... makers of SweetLeaf® Stevia Sweetener, Michael P. May, Ph.D., recently accepted the distinguished ... Export Recognition Program selected Wisdom Natural Brands (WNB), and 16 other businesses from ...
Breaking Medicine News(10 mins):