International Stem Cell Corporation (OTCBB: ISCO) announces today successful completion of the first series of preclinical studies designed to support the safety and utility of neuronal cells derived from human parthenogenetic stem cell line (hpSC). These initial experiments, demonstrating that the derived neuronal cells were able to survive in mice brains without giving rise to tumors, represent a key milestone towards possible therapeutic applications including treating Parkinson's disease.


Dr. Albrecht Müller, Professor at the Institute of Medical Radiology and Cell Research, Würzburg University (Germany), commented: "Human parthenogenetic stem cells are potentially very promising candidates for use in regenerative medicine primarily because of the possibility that they immune-match a large number of recipients. The result of these safety and survival studies is a very important step along the path towards the clinical use of such cells."


Although most cases of Parkinson's disease occur in people with no family history of the disease, a number of genetic mutations have nevertheless been identified with the disease. While the inheritance pattern is largely unknown, as a condition with a genetic component "autologous" treatment, that is to say treatment using the patient's own cells, is far from ideal and does not offer the potential of a cure. To treat Parkinson's disease successfully a source of cells free of the mutated genes is necessary. Human parthenogenetic stem cells provide this source, as well as superior immune-matching capabilities.


ISCO currently has the world's largest collection of human parthenogenetic stem cells including heterozygous examples, where the cells immune match the donor as is the case with induced pluripotent stem cells (iPS), and homozygous examples which immune-match millions of individuals. ISCO is actively expanding this collection of cell lines and creating a "bank" of homozygous human parthenogenetic stem cells that can be used as a platform to not only reduce the chances of tissue rejection, but also make cellular-based therapies economically more viable.


Dr. Ruslan Semechkin, ISCO's Vice President, commented: "One of ISCO's main therapeutic targets is treatment of Parkinson's disease, a common neurodegenerative disease in the US, where the current standard of care is designed mostly to treat the symptoms, but not the disease. These results clearly represent an important step towards the therapeutic application of human parthenogenetic stem cells derived cells in addressing the basic underlying mechanisms and potentially transforming the treatment of neurodegenerative diseases."


About International Stem Cell Corporation
International Stem Cell Corporation is focused on the therapeutic applications of human parthenogenetic stem cells and the development and commercialization of cell-based research and cosmetic products. ISCO's core technology, parthenogenesis, results in the creation of pluripotent human stem cells from unfertilized oocytes (eggs). hpSCs avoid ethical issues associated with the use or destruction of viable human embryos. ISCO scientists have created the first parthenogenic, homozygous stem cell line that can be a source of therapeutic cells with minimal immune rejection after transplantation into hundreds of millions of individuals of differing genders, ages and racial background. This offers the potential to create the first true stem cell bank, UniStemCellTM. ISCO also produces and markets specialized cells and growth media for therapeutic research worldwide through its subsidiary Lifeline Cell Technology, and cell-based skin care products through its subsidiary Lifeline Skin Care. More information is available at http://www.internationalstemcell.com 


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Forward-looking Statements
Statements pertaining to anticipated developments, research and development goals and related potential therapeutic treatments, the potential benefits of products, and other opportunities for the company 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 and the management of collaborations, regulatory approvals, need and ability to obtain future capital, application of capital resources among competing uses, 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 company's business, particularly those mentioned in the cautionary statements found in the company's Securities and Exchange Commission filings. The company disclaims any intent or obligation to update forward-looking statements.


International Stem Cell Corporation
Kenneth C. Aldrich, co -Chairman
760-940-6383
kaldrich@intlstemcell.com
Or:
Dr. Ruslan Semechkin, Vice President
760-940-6383
ras@intlstemcell.com
Or:
Lippert/Heilshorn & Associates
Don Markley
310-691-7100
dmarkley@lhai.com

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