Journal
JOURNAL OF BIOLOGICAL CHEMISTRY
Volume 276, Issue 20, Pages 17281-17285Publisher
AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
DOI: 10.1074/jbc.M101414200
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- NCI NIH HHS [CA42802] Funding Source: Medline
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The ubiquitously expressed c-Abl tyrosine kinase is activated in the response of cells to genotoxic and oxidative stress. The present study demonstrates that reactive oxygen species (ROS) induce targeting of c-Abl to mitochondria. We show that ROS-induced localization of c-Abl to mitochondria is dependent on activation of protein kinase C (PKC)S and the c-Abl kinase function. Targeting of c-Abl to mitochondria is associated with ROS-induced loss of mitochondrial transmembrane potential. The results also demonstrate that c-Abl is necessary for ROS-induced depletion of ATP and the activation of a necrosis-like cell death. These findings indicate that the c-Abl kinase targets to mitochondria in response to oxidative stress and thereby mediates mitochondrial dysfunction and cell death.
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