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Updated: Jul 7, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
14:57

Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

ROS and p53: a versatile partnership

Bin Liu1, Yumin Chen, Daret K St Clair

  • 1Graduate Center for Toxicology, University of Kentucky, Lexington, KY 40506, USA.

Free Radical Biology & Medicine
|February 16, 2008
PubMed

Insights

The tumor suppressor protein p53 regulates cellular reactive oxygen species (ROS) generation. ROS, in turn, influence p53

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • The tumor suppressor protein p53 is a critical transcription factor involved in cellular stress responses and genomic stability.
  • Reactive oxygen species (ROS) play a dual role in cells, acting as signaling molecules and toxicants, and are central to redox signaling.
  • The concentration and distribution of p53 influence its cellular functions, with ROS acting as both an activator and mediator of p53-induced apoptosis.

Purpose of the Study:

  • To investigate the newly discovered role of p53 in regulating cellular ROS generation.
  • To examine how ROS modulate the selective transactivation of p53 target genes.
  • To elucidate the intricate interlinks between ROS and p53.

Main Methods:

  • Literature review and synthesis of recent studies on p53 and ROS.
  • Analysis of experimental data on p53-mediated ROS regulation.
  • Investigation of ROS modulation of p53 target gene transactivation.

Main Results:

  • p53 actively regulates the generation of cellular ROS.
  • ROS levels and distribution impact p53's ability to selectively activate specific target genes.
  • ROS act as both upstream signals for p53 activation and downstream effectors in apoptosis.

Conclusions:

  • p53's function is intricately linked to cellular ROS levels.
  • ROS are key mediators in selective p53 transactivation pathways.
  • Understanding the p53-ROS interplay is crucial for comprehending cellular stress responses and apoptosis.

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