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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
P53 promoter selection: choosing between life and death
Sanjeev Das1, Sarah A Boswell, Stuart A Aaronson
1Cutaneous Biology Research Center, Massachusetts General Hospital and Harvard Medical School, Charlestown, Massachusetts 02129, USA.
The p53 tumor suppressor protein determines cell fate following genotoxic stress. This review explores how p53 modifications and co-factors dictate whether cells undergo arrest and repair or apoptosis.
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Background:
- The p53 tumor suppressor is critical for preventing damaged DNA transmission.
- p53 activation in response to genotoxic stress presents a key unresolved question.
- p53 acts as a transcription factor, regulating genes involved in cell fate.
Purpose of the Study:
- To review the factors influencing p53's role in genotoxic stress response.
- To elucidate the mechanisms by which p53 chooses between cell cycle arrest and apoptosis.
- To enumerate modifications and co-factors affecting p53 promoter selection.
Main Methods:
- Literature review of studies on p53.
- Analysis of p53 modifications and co-factor interactions.
- Examination of p53's transcriptional targets and downstream effects.
Main Results:
- p53 activation leads to either cell cycle arrest/DNA repair or apoptosis.
- Specific post-translational modifications and co-factors modulate p53 activity.
- Promoter selection by p53 is influenced by a complex interplay of factors.
Conclusions:
- Understanding p53's decision-making process is crucial for cancer research.
- Modulation of p53 pathways offers potential therapeutic strategies.
- The balance between DNA repair and apoptosis is tightly regulated by p53.
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