Use and abuse of exogenous H2O2 in studies of signal transduction

被引:152
作者
Forman, Henry Jay [1 ]
机构
[1] Univ Calif Merced, Sch Nat Sci, Merced, CA 95344 USA
关键词
hydrogen peroxide; signal transduction; PTP1B; thioredoxin; kinetics; protein tyrosine phosphatase; ASK1; redox signaling; free radicals; PROTEIN-TYROSINE-PHOSPHATASE; KINASE; ASK1; NF-KAPPA-B; METABOLIC OXIDATIVE STRESS; NECROSIS-FACTOR-ALPHA; ACTIVE-SITE CYSTEINE; S-TRANSFERASE-MU; HYDROGEN-PEROXIDE; REACTIVE OXYGEN; REDOX REGULATION;
D O I
10.1016/j.freeradbiomed.2007.01.011
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
The goal of this review is to present a rationale for the use of exogenous H2O2, which has been demonstrated to have both toxicological and physiological signaling roles. Reasons for the use of exogenous application of nontoxic concentrations of H2O2 in model systems and caveats for interpretation of the data obtained will both be presented. Briefly, an argument for the cautious use of the addition of exogenous H2O2 is that, because of the permeability of cell membranes to this neutral small molecule, a concentration that is produced locally and that is necessary for the physiological action can be mimicked. On the other hand, it must be recognized that the addition of an agent or its enzymatic generation in the medium may produce reactions that may not normally occur because the total dose of H2O2 and the concentration of H2O2 in some cellular locations will exceed what is normally achieved even under a pathophysiological state. For this reason, this review will try to provide an unbiased balanced pros- and -cons analysis of this issue. (c) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码:926 / 932
页数:7
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