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Tyrosine Kinase Inhibitor AG126 Reduces 7-Ketocholesterol-Induced Cell Death by Suppressing Mitochondria-Mediated Apoptotic Process
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Tyrosine Kinase Inhibitor AG126 Reduces 7-Ketocholesterol-Induced Cell Death by Suppressing Mitochondria-Mediated Apoptotic Process
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Journal Article
Tyrosine Kinase Inhibitor AG126 Reduces 7-Ketocholesterol-Induced Cell Death by Suppressing Mitochondria-Mediated Apoptotic Process
2010
Overview
The preventive effect of tyrosine kinase inhibitor AG126 against the 7-ketocholesterol toxicity was investigated in relation to the mitochondria-mediated cell death process. 7-Ketocholesterol induced the nuclear damage, the mitochondrial membrane permeability changes, the formation of reactive oxygen species and the depletion of GSH, which leads to cell death in differentiated PC12 cells. Tyrphostin AG126 significantly attenuated the 7-ketocholesterol-induced decrease in cytosolic Bid and Bcl-2 levels, increase in cytosolic pro-apoptotic Bax levels, mitochondrial membrane potential loss, cytochrome
c
release and subsequent caspase-3 activation. The inhibitory effect of tyrphostin AG126 may be supported by the inhibitory effect on another oxysterol 25-hydroxycholesterol-induced cell death. The results show that tyrphostin AG126 may prevent the 7-ketocholesterol toxicity by suppressing the mitochondrial membrane permeability change that leads to the cytochrome
c
release and caspase-3 activation. The preventive effect seems to be associated with the inhibitory effect on the formation of reactive oxygen species and the depletion of GSH.
Publisher
Springer US,Springer Nature B.V
