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UT Southwestern researchers find key step in body's ability to make red blood cells
Date:7/31/2010

leagues study many different types of microRNAs to determine their functions and to find therapeutic uses of artificial microRNAs.

"miR-451 is found in great abundance in mature red blood cells, but its function was not known," said lead author David Patrick, a graduate student in molecular biology.

In the new study, the scientists created genetically engineered mice that could not make miR-451. The mice had a lowered red blood cell count and also had difficulty creating more red blood cells under conditions that usually stimulate production.

miR-451 works by interacting with another RNA involved in producing a protein called 14-3-3-zeta, which plays a role in the maturation of many types of cells, the researchers found.

The team also treated blood stem cells with an artificial RNA designed to inhibit miR-451. As a result, the number of red blood cells decreased.

Dr. Olson and his colleagues are pursuing a patent on miR-451 inhibitors and studying whether a microRNA-based drug might be useful in treating several blood-related disorders.


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Contact: Aline McKenzie
aline.mckenzie@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert

Page: 1 2

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