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Redox regulation of p53, redox effectors regulated by p53: a subtle balance

Agnès Maillet1, Shazib Pervaiz

  • 1ROS, Apoptosis and Cancer Biology Laboratory, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.

Antioxidants & Redox Signaling
|November 29, 2011
PubMed
Abstract

Insights

Reactive oxygen species (ROS) regulate the tumor suppressor protein p53, impacting cell fate and integrity. This review explores the bidirectional relationship between ROS production and p53 activity in cellular processes.

Area of Science:

  • Cellular biology
  • Molecular mechanisms
  • Redox signaling

Background:

  • p53 is a critical transcription factor regulating cellular responses to stress and genomic instability.
  • Redox modifications of p53 can significantly alter cell fate signaling pathways.
  • Understanding the interplay between ROS and p53 is crucial for comprehending cell and tissue integrity.

Purpose of the Study:

  • To elucidate the regulatory mechanisms by which reactive oxygen species (ROS) influence p53 activity.
  • To describe how p53, in turn, modulates cellular ROS production.
  • To review the bidirectional communication between ROS and p53 in biological systems.

Main Methods:

  • Literature review of recent studies on ROS and p53.
  • Analysis of experimental evidence from various model systems.
  • Synthesis of findings on the upstream and downstream effects of ROS on p53.

Main Results:

  • Evidence suggests ROS can act both upstream and downstream of p53 activation.
  • ROS-dependent modifications impact the activity and function of redox-sensitive proteins like p53.
  • The relationship between ROS and p53 is complex and context-dependent.

Conclusions:

  • ROS act as secondary messengers influencing cellular networks involved in homeostasis and disease.
  • The intricate regulation between ROS and p53 affects fundamental pathways maintaining cell and tissue integrity.
  • Further research is needed to fully understand this redox-p53 axis in health and disease.

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