ISCO commences second phase of testing RPE derived from parthenogenetic stem cells

International Stem Cell CorporationMar 18 2010

International Stem Cell Corporation (OTCBB: ISCO), www.internationalstemcell.com, announced today that ISCO's Research and Therapeutic Development Group, together with a group of scientists from the University of California, Irvine (UCI), is starting a second phase of essential pre-clinical experiments to test retinal pigment epithelium derived from parthenogenetic stem cells. Follow on pre-clinical experiments will be conducted to rescue vision in disease models.

“This research will enable us to then test the ability of these cells to restore vision in rodent models of retinal degeneration.”

Retinal pigment epithelium (RPE) has been derived from parthenogenetic stem cells by ISCO scientists in close collaboration with UCI scientists. The RPE cells will be tested for the presence of specific markers and for functional activity.

Retinal pigment epithelium plays a critical role in maintaining proper eye function. Loss of function or dysfunction of RPE is involved in a range of disabling eye conditions, particularly age-related macular degeneration (AMD) that is the major cause of vision loss in seniors.

Encouraging data from animal models have shown that visual degradation caused by AMD can be slowed through the transplantation of RPE. One of the major barriers for this therapy is the lack of sufficient RPE cells from suitable donated tissue.

According to Dr. Hans Keirstead, Professor of Anatomy and Neurobiology at the University of California, Irvine, “The derivation of RPE from stem cells will allow the availability of an unlimited source of RPE for transplantation.” Referring to the upcoming work with ISCO, Dr. Keirstead said, “This research will enable us to then test the ability of these cells to restore vision in rodent models of retinal degeneration.”

Dr. Nikolay Turovets, ISCO’s Director of Research and Therapeutic Development, says, “RPE derived from human parthenogenetic stem cells can overcome the problem of immune-matching for transplantation since ISCO’s parthenogenetic stem cell lines can be made to carry the most common sets of immune genes found among various racial groups. That is why the differentiated derivatives from one hpSC line may be transplanted into millions of people.”