Figure 2. Mitochondria-targeted hOggl blocks oxidant-induced A549 cell mitochondrial dysfunction and apoptosis.
(A) Mt-hOgg-1 overexpression prevents amosite asbestos-induced ΔΨm as assessed using a tetramethylrhodamine ethyl ester (TMRE) fluorometric technique. (B): Mt-hOggl overexpression abolishes asbestos-induced caspase-9 activation and DNA nucleosomal fragmentation.(C): Mt-hOggl overexpression blocks H2O2-induced ΔΨm (TMRE fluorescence) and DNA fragmentation. * p < .05 v. no asbestos or H2O2; † p < .05 v. empty vector cells exposed to the same dose of asbestos or H2O2.