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Researchers identify genetic basis of cardiac, craniofacial birth defects
Date:10/30/2012

CORVALLIS, Ore. A group of researchers in Israel, the United States and other nations have made important advances in the rapidly-expanding field of "regenerative medicine," outlining for the first time connections in genetic regulation that normally prevent birth defects in heart and facial muscles.

Some of these problems are surprisingly common about 1 percent of all people have a congenital heart defect. This basic research will provide a road map to ultimately allow scientists to grow the cell types needed to repair such defects, from stem cells that can be generated from a person's own body.

The findings were published online today in the Proceedings of the National Academy of Sciences.

"Advances in regenerative medicine and developmental biology can now happen because we no longer require human embryos to generate stem cells," said Chrissa Kioussi, a co-author on the study and associate professor in the College of Pharmacy at Oregon State University. "The Nobel Prize this year was awarded to people who discovered how to make stem cells from adult biopsies."

Patient-derived stem cells can in principle be turned into any needed cell type, Kioussi said. The key is understanding the exact regulatory process than tells cells what type they are supposed to turn into, she said, such as a cell on the outside of the left ventricle of the heart.

"Once we understand these genetic controls in sufficient detail, we can not only turn a skin cell into a stem cell, but also turn that stem cell into the type needed for the patient to recover," Kioussi said. "We may eventually be able to grow replacement organs from the patient's cells."

In this study, researchers identified four specific "transcription factor" genes that control processes related to heart and head muscle formation. When there are defects in this process, the result can be death or a range of debilitating problems, from cleft palate to fa
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Contact: Chrissa Kioussi
Chrissa.kioussi@oregonstate.edu
541-737-2179
Oregon State University
Source:Eurekalert

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