Peroxiredoxins and the Regulation of Cell Death

  • Hampton, Mark B. (Centre for Free Radical Research, Department of Pathology, University of Otago) ;
  • O'Connor, Karina M. (Centre for Free Radical Research, Department of Pathology, University of Otago)
  • Received : 2015.12.21
  • Accepted : 2015.12.24
  • Published : 2016.01.31


Cell death pathways such as apoptosis can be activated in response to oxidative stress, enabling the disposal of damaged cells. In contrast, controlled intracellular redox events are proposed to be a significant event during apoptosis signaling, regardless of the initiating stimulus. In this scenario oxidants act as second messengers, mediating the post-translational modification of specific regulatory proteins. The exact mechanism of this signaling is unclear, but increased understanding offers the potential to promote or inhibit apoptosis through modulating the redox environment of cells. Peroxiredoxins are thiol peroxidases that remove hydroperoxides, and are also emerging as important players in cellular redox signaling. This review discusses the potential role of peroxiredoxins in the regulation of apoptosis, and also their ability to act as biomarkers of redox changes during the initiation and progression of cell death.


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