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Updated: Jul 15, 2026
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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Changing the p53 master regulatory network: ELEMENTary, my dear Mr Watson
D Menendez1, A Inga, J J Jordan
1Laboratory of Molecular Genetics, Chromosome Stability Section, National Institute of Environmental Health Sciences, NIH, Research Triangle Park, NC 27709, USA.
Oncogene
|April 3, 2007
Summary
The p53 network regulates genes for cell cycle, apoptosis, and DNA repair. Understanding p53
Area of Science:
- Molecular Biology
- Genetics
- Cancer Biology
Background:
- The p53 master regulatory network controls stress-responsive gene expression in humans.
- Key components include p53, response elements (REs), chromatin, and transcription machinery, influencing biological responses.
- p53 gene mutations are implicated in over 50% of human cancers.
Purpose of the Study:
- To elucidate the intricate relationship between wild-type and mutant p53 proteins and their target response elements.
- To understand how variations in the p53 network impact gene expression and cellular functions.
- To highlight the significance of p53 DNA-binding domain mutations in cancer development.
Main Methods:
- Analysis of the p53 master regulatory network components.
- Investigating the role of sequence-specific DNA-binding domains in p53 regulation.
- Examining the impact of p53 alterations on gene expression patterns.
Main Results:
- The p53 network's core lies in its numerous response elements (REs).
- Alterations in p53 or its network components significantly affect gene expression and biological outcomes.
- Over 90% of p53 mutations occur within the DNA-binding domain, crucial for target gene regulation.
Conclusions:
- Understanding the p53-response element interaction is critical due to its role in cancer.
- The p53 network's complexity offers insights into cellular responses to stress and disease.
- Further research into p53 mutations and their effects on DNA binding is warranted for therapeutic strategies.
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