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Scientists find bone-marrow environment that helps produce infection-fighting T and B cells
Date:2/24/2013

DALLAS Feb. 24, 2013 The Children's Medical Center Research Institute at UT Southwestern has deepened the understanding of the environment within bone marrow that nurtures stem cells, this time identifying the biological setting for specialized blood-forming cells that produce the infection-fighting white blood cells known as T cells and B cells.

The research found that cells called early lymphoid progenitors, which are responsible for producing T cells and B cells, thrive in an environment known as an osteoblastic niche. The investigation, published online today in Nature and led by Dr. Sean Morrison, also establishes a promising approach for scientists to map the entire blood-forming system.

Scientists already know how to manufacture large quantities of stem cells that give rise to the nervous system, skin, and other tissues. But they have been unable to make blood-forming stem cells in a laboratory, in part because of a lack of understanding about the niche in which blood-forming stem cells and other progenitor cells reside in the body.

"We believe this research moves us one step closer toward the development of cell therapies in the blood-forming system that don't exist today," said Dr. Morrison, Director of the Institute and Professor of Pediatrics at UT Southwestern Medical Center. "In understanding the environments for blood-forming stem cells and those of different kinds of progenitor cells, we can work toward reproducing those environments in the lab and growing cells that can be transplanted to treat a host of medical conditions."

These findings eventually may help increase the safety and effectiveness of bone-marrow transplants, such as those needed after healthy marrow is destroy
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Contact: Jeff Carlton
jeffrey.carlton@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert  

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