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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

The p53 tumor suppressor: a master regulator of diverse cellular processes and therapeutic target in cancer

Marianne Farnebo1, Vladimir J N Bykov, Klas G Wiman

  • 1Dept. of Oncology-Pathology, Cancer Center Karolinska (CCK), Karolinska Institutet, Stockholm, Sweden.

Biochemical and Biophysical Research Communications
|May 25, 2010
PubMed

Insights

The p53 tumor suppressor is crucial for preventing cancer by inducing apoptosis and cell cycle arrest. Reactivating mutant p53 with drugs like PRIMA-1 shows promise for novel cancer therapies.

Area of Science:

  • Molecular Biology
  • Cancer Biology
  • Genetics

Background:

  • The tumor suppressor p53 plays a vital role in cellular processes like apoptosis, cell cycle arrest, and aging.
  • p53 activity is regulated by posttranslational modifications and its antisense gene, Wrap53.
  • Mutations in p53 are common in human cancers, impairing its tumor-suppressive functions.

Purpose of the Study:

  • To explore the multifaceted roles of p53 in biological processes and cancer.
  • To investigate strategies for reactivating mutant p53 for cancer therapy.

Main Methods:

  • Review of p53's involvement in cell cycle arrest, senescence, apoptosis, autophagy, metabolism, and aging.
  • Analysis of p53 regulation by posttranslational modifications and the Wrap53 gene.
  • Evaluation of small molecules like PRIMA-1 and its analog APR-246 in restoring mutant p53 function.

Main Results:

  • p53 activation eliminates nascent tumor cells through apoptosis or senescence.
  • Wrap53 enhances p53 mRNA levels, and its absence impairs the DNA damage response.
  • The small molecule PRIMA-1 restores wild-type p53 conformation and DNA binding, inducing apoptosis and inhibiting tumor growth.

Conclusions:

  • Understanding the p53 pathway is essential for improving cancer diagnosis and treatment.
  • Reactivation of mutant p53 represents a promising therapeutic strategy for cancers with p53 mutations.
  • PRIMA-1 and its analog APR-246 demonstrate potential in targeting mutant p53-driven cancers.

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