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Novel stem cell technology leads to better spinal cord repair

Researchers believe they have identified a new way, using an advance in stem-cell technology, to promote recovery after spinal cord injury of rats, according to a study published in today's Journal of Biology.

Scientists from the New York State Center of Research Excellence in Spinal Cord Injury showed that rats receiving a transplant of a certain type of immature support cell from the central nervous system (generated from stem cells) had more than 60 percent of their sensory nerve fibers regenerate. Just as importantly, the study showed that more than two-thirds of the nerve fibers grew all the way through the injury sites eight days later, a result that is much more promising than previous research. The rats that received the cell transplants also walked normally in two weeks.

The University of Rochester Medical Center, Rochester, N.Y., and Baylor College of Medicine, Houston, collaborated on the work. Researchers believe they made an important advance in stem cell technology by focusing on a new cell type that appears to have the capability of repairing the adult nervous system.

"These studies provide a way to make cells do what we want them to do, instead of simply putting stem cells into the damaged area and hoping the injury will cause the stem cells to turn into the most useful cell types," explains Mark Noble, Ph.D., co-author of the paper, professor of Genetics at the University of Rochester, and a pioneer in the field of stem cell research. "It really changes the way we think about this problem."

The breakthrough is based on many years of stem cell biology research led by Margot Mayer-Proschel, Ph.D., associate professor of Genetics at the University of Rochester. In the laboratory, Mayer-Proschel and colleagues took embryonic glial stem cells and induced them to change into a specific type of support cell called an astrocyte, which is known to be highly supportive of nerve fiber growth. These astrocytes, called glial prec
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Contact: Leslie Orr
leslie_orr@urmc.rochester.edu
585-275-5774
University of Rochester Medical Center
27-Apr-2006


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