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Updated: Oct 30, 2025
14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
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Dying to Survive-The p53 Paradox
Andrea Lees1, Tamas Sessler1, Simon McDade1
1Patrick G Johnston Centre for Cancer Research, Queen's University, Belfast BT9 7AE, UK.
Cancers
|July 2, 2021
Summary
The p53 tumor suppressor, known as "guardian of the genome", can paradoxically suppress cell death to maintain tissue integrity. Understanding this role offers new strategies for enhancing anti-cancer treatment efficacy.
Area of Science:
- Molecular Biology
- Cell Biology
- Cancer Research
Background:
- The p53 protein acts as a tumor suppressor, often called the "guardian of the genome". It responds to DNA damage by halting the cell cycle or initiating cell death.
- While p53's role in DNA repair and cell death is established, how it dictates different cell fates under various stress conditions and during anti-cancer treatments is not fully understood.
Purpose of the Study:
- To review the diverse cell death pathways influenced by p53 activation.
- To explore how p53 may paradoxically suppress cell death to preserve tissue integrity.
- To discuss the implications for tumors with wild-type p53 and potential therapeutic strategies.
Main Methods:
- Literature review and synthesis of existing research on p53 function and cell death.
- Analysis of the interplay between p53, cellular microenvironments, and immune responses.
- Evaluation of p53's role in tissue homeostasis versus anti-cancer treatment contexts.
Main Results:
- p53 activation influences a growing number of cell death pathways.
- p53 can suppress cell death to maintain tissue integrity, a function that can be co-opted by tumors.
- The tumor microenvironment significantly impacts p53-mediated cell fate decisions.
Conclusions:
- Understanding the multifaceted roles of p53 in cell death regulation is crucial.
- p53's paradoxical suppression of cell death presents therapeutic opportunities for cancer treatment.
- Targeting p53-mediated pathways could enhance the efficacy of existing anti-cancer therapies.
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