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Keeping stem cells strong
Date:5/21/2013

guarding the quality and longevity of HSCs."

The study findings provide, for the first time, a detailed molecular connection between chronic inflammation, and bone marrow failure and diseases of the blood. These findings could lead to the discovery and development of anti-inflammatory molecules that could be used as therapeutics for blood diseases. In fact, the researchers believe that miR-146a itself may ultimately become a very effective anti-inflammatory molecule, once RNA molecules or mimetics can be delivered more efficiently to the cells of interest.

The new mouse model, Zhao says, also mimics important aspects of human myelodysplastic syndrome (MDS)a form of pre-leukemia that often causes severe anemia, can require frequent blood transfusions, and usually leads to acute myeloid leukemia. Further study of the model could lead to a better understanding of the condition and therefore potential new treatments for MDS.

"This study speaks to the importance of keeping chronic inflammation in check and provides a good rationale for broad use of safer and more effective anti-inflammatory molecules," says Baltimore, who is a coauthor of the study. "If we can understand what cell types and proteins are critically important in chronic-inflammation-driven tumor formation and stem cell exhaustion, we can potentially design better and safer drugs to intervene."


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Contact: Deborah Williams-Hedges
debwms@caltech.edu
626-395-3227
California Institute of Technology
Source:Eurekalert

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