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Stem cell study opens door to undiscovered world of biology
Date:3/9/2014

DALLAS March 9, 2014 For the first time, researchers have shown that an essential biological process known as protein synthesis can be studied in adult stem cells something scientists have long struggled to accomplish. The groundbreaking findings from the Children's Medical Center Research Institute at UT Southwestern (CRI) also demonstrate that the precise amount of protein produced by blood-forming stem cells is crucial to their function.

The discovery, published online today in Nature, measures protein production, a process known as translation, and shows that protein synthesis is not only fundamental to how stem cells are regulated, but also is critical to their regenerative potential.

"We unveiled new areas of cellular biology that no one has seen before," said Dr. Sean Morrison, Director of the Children's Research Institute, Professor of Pediatrics, and the Mary McDermott Cook Chair in Pediatric Genetics at UT Southwestern Medical Center. "No one has ever studied protein synthesis in somatic stem cells. This finding not only tells us something new about stem cell regulation, but opens up the ability to study differences in protein synthesis between many kinds of cells in the body. We believe there is an undiscovered world of biology that allows different kinds of cells to synthesize protein at different rates and in different ways, and that those differences are important for cellular survival."

Dr. Adrian Salic's laboratory at Harvard Medical School chemically modified the antibiotic puromycin in a way that made it possible to visualize and quantify the amount of protein synthesized by individual cells within the body. Dr. Robert A.J. Signer, a postdoctoral research fellow in Dr. Morrison's laboratory and first
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Contact: Lisa Warshaw
lisa.warshaw@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert  

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