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Updated: Jul 6, 2026
14:57
Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Slugging it out: fine tuning the p53-PUMA death connection
Jack T Zilfou1, Mona S Spector, Scott W Lowe
1Cold Spring Harbor Laboratory, 1 Bungtown Road, Cold Spring Harbor, New York 11724, USA.
Cell
|November 16, 2005
Summary
The tumor suppressor p53 induces SLUG, which protects hematopoietic progenitor cells from DNA damage-induced apoptosis by repressing the proapoptotic factor PUMA. This reveals a novel protective mechanism against DNA damage.
Area of Science:
- Cellular response to DNA damage
- Tumor suppressor functions
- Apoptosis regulation
Background:
- DNA damage triggers complex cellular responses mediated by the tumor suppressor p53.
- p53 controls cell fate, including apoptosis, in response to genotoxic stress.
Purpose of the Study:
- To investigate the role of transcription factor SLUG in p53-mediated cellular responses to DNA damage.
- To elucidate the mechanism by which SLUG influences apoptosis in hematopoietic progenitor cells.
Main Methods:
- Analysis of SLUG induction by p53 in response to DNA damage.
- Assessment of SLUG's effect on apoptosis in hematopoietic progenitor cells.
- Investigation of SLUG's regulation of p53 target genes, specifically Puma.
Main Results:
- Wu et al. demonstrate that p53 induces the transcription factor SLUG.
- SLUG was found to protect hematopoietic progenitor cells from DNA damage-induced apoptosis.
- SLUG achieves this protection by repressing Puma, a proapoptotic target gene of p53.
Conclusions:
- SLUG acts as a novel p53-induced factor that confers resistance to apoptosis upon DNA damage.
- The repression of Puma by SLUG is a key mechanism in this protective pathway.
- This finding provides new insights into the intricate network regulating cell survival under genotoxic stress.
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