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UNC research uncovers new insight into cell development and cancer
Date:12/27/2012

CHAPEL HILL - Long-standing research efforts have been focused on understanding how stem cells, cells capable of transforming into any type of cell in the body, are capable of being programmed down a defined path to contribute to the development of a specific organ like a heart, lung, or kidney. Research from the University of North Carolina at Chapel Hill School of Medicine has shed new light on how epigenetic signals may function together to determine the ultimate fate of a stem cell.

The study, published December 27, 2012 by the journal Molecular Cell, implicates a unique class of proteins called polycomb-like proteins, or PCL's, as bridging molecules between the "on" and "off" state of a gene. While all of these specialized types of cells share the same genetic information encoded in our DNA, it is becoming increasingly clear that information outside the genome, referred to as epigenetics, plays a central role in orchestrating the reprogramming of a stem cell down a defined path.

Although it is understood that epigenetics is responsible for turning genes "on" and "off" at defined times during cellular development, the precise mechanisms controlling this delicate process are less well understood.

"This finding has important implications for both stem cell biology and cancer development, as the same regulatory circuits controlled by PCL's in stem cells are often misregulated in tumors," said Dr. Greg Wang, senior author of the study and Assistant Professor of Biochemistry and Biophysics in the UNC School of Medicine and a member of UNC Lineberger Comprehensive Cancer Center.

The study, led by postdoctoral research fellows Drs. Ling Cai and Rui Lu in the Wang lab, and Dr. Scott Rothbart, a Lineberger postdoctoral fellow in the lab of Dr. Brian Strahl, Associate Professor of Biochemistry and Biophysics in the UNC School of Medicine and a member of UNC Lineberger Comprehensive Cancer Center, identified that PC
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Contact: William Davis
william_davis@med.unc.edu
919-966-5906 x254
University of North Carolina Health Care
Source:Eurekalert  

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