Role of redox potential and reactive oxygen species in stress signaling

  • Adler V
  • Yin Z
  • Tew K
 et al. 
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Stress-activated signaling cascades are a ected by altered redox potential. Key contributors to altered redox potential are reactive oxygen species (ROS) which are formed, in most cases, by exogenous genotoxic agents including irradiation, in¯ammatory cytokines and chemical carcinogens. ROS and altered redox potential can be considered as the primary intracellular changes which regulate protein kinases, thereby serving as an important cellular component linking external stimuli with signal transduction in stress response. The mechan- isms, which underlie the ROS-mediated response, involve direct alteration of kinases and transcription factors, and indirect modulation of cysteine-rich redox-sensitive proteins exempli®ed by thioredoxin and glutathione S- transferase. This review summarizes the current under- standing of the mechanisms contributing to ROS-related changes in key stress activated signaling cascades.

Author-supplied keywords

  • gst
  • nf- k b
  • oxygen radicals
  • ros
  • stress kinases
  • thioredoxin

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  • V Adler

  • Z Yin

  • KD Tew

  • Z Ronai

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