Tuesday, November 17, 2009

Geron publish data on the stem cell research.....

In my earlier blog (Geron plans to advance clinical program for spinal cord injury), I did mention about the clinical program. Now Geron has come up with positive results. As per the claim by the company oligodendrocyte progenitor cells (OPCs) derived from human embryonic stem cells (hESCs), when transplanted into a rodent model of cervical spinal cord injury, reduced tissue damage within the lesion and improved recovery of locomotor function. These data provide preclinical proof-of-concept for the use of GRNOPC1, Geron's hESC-derived oligodendrocyte progenitor product, in patients with cervical spinal cord injuries.

Oligodendrocytes have two main functions in the spinal cord; they produce the myelin that wraps around nerve fibers to enable electrical impulse conduction and they produce other molecules (neurotrophic factors) that help to maintain nerve cells. In spinal cord injury oligodendrocytes are lost, resulting in the loss of myelin and death of nerve cells that can cause paralysis below the injury. The present study, conducted in a cervical model of spinal cord injury, adds to previous work in a thoracic model, which has demonstrated that injection of hESC-derived OPCs into the site of injury improved locomotor function with evidence of remyelination of nerve fibers.

Source : http://www.geron.com/media/pressview.aspx?id=1196

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