Production of superoxide and hydrogen peroxide from specific mitochondrial sites under different bioenergetic conditions

被引:338
作者
Wong, Hoi-Shan [1 ]
Dighe, Pratiksha A. [1 ]
Mezera, Vojtech [1 ]
Monternier, Pierre-Axel [1 ]
Brand, Martin D. [1 ]
机构
[1] Buck Inst Res Aging, Novato, CA 94945 USA
关键词
Complex I; hydrogen peroxide; mitochondria; reactive oxygen species (ROS); superoxide ion; complex III; SKELETAL-MUSCLE MITOCHONDRIA; OXIDOREDUCTASE COMPLEX-I; REACTIVE OXYGEN; CALORIC RESTRICTION; HEART-MITOCHONDRIA; OXIDATIVE STRESS; RESPIRATORY-CHAIN; TISSUE-DAMAGE; FREE-RADICALS; RAT-HEART;
D O I
10.1074/jbc.R117.789271
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Mitochondrial production of superoxide and hydrogen peroxide is potentially important in cell signaling and disease. Eleven distinct mitochondrial sites that differ markedly in capacity are known to leak electrons to oxygen to produce O-2(center dot-). and/or H2O2. We discuss their contributions to O-2(center dot-)./H2O2 production under native conditions in mitochondria oxidizing different substrates and in conditions mimicking physical exercise and the changes in their capacities after caloric restriction. We review the use of S1QELs and S3QELs, suppressors of mitochondrial O-2(center dot-)./H2O2 generation that do not inhibit oxidative phosphorylation, as tools to characterize the contributions of specific sites in situ and in vivo.
引用
收藏
页码:16804 / 16809
页数:6
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