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Scientists find potential target for treating mitochondrial disorders
Date:3/27/2014

chondria behave as if there's not enough oxygen," says Chen, who with Birsoy, authored a paper in the journal Cell Reports describing this work. "So in these situations, activation of ATPIF1 is not good, because there are still many nutrients around to provide ATP. Instead, blocking ATPIF1 is therapeutic because it allows for maintenance of the membrane potential."

Liver cells are frequently affected in patients with severe mitochondrial disease, so Chen and Birsoy tested the effects of mitochondrial dysfunction in the liver cells of control mice and mice with ATPIF1 genetically knocked out. Again, the liver cells with suppressed ATPIF1 function dealt better with mitochondrial dysfunction than liver cells with normal ATPIF1 activity.

"It's very simpleif you get rid of ATPIF1, you survive in the presence of mitochondrial dysfunction," says Birsoy. "From what we see so far, there are no major side effects from blocking ATPIF1 in mice."

For Chen and Birsoy, the next step in this line of research is to test the effects of ATPIF1 suppression in mouse models of mitochondrial dysfunction. Then they will try to identify therapeutics that effectively block ATPIF1 function.


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Contact: Nicole Giese Rura
rura@wi.mit.edu
617-258-6851
Whitehead Institute for Biomedical Research
Source:Eurekalert

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