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Updated: Jan 31, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
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Yeast As a Chassis for Developing Functional Assays to Study Human P53

Published on: August 4, 2019

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CP-31398 restored the functional condensates of R175H p53 by stabilizing the zinc-binding domain and 251-258 segment

Yang Liu1, Yuan Liu1, Chang Xu1

  • 1School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong Province 510006, PR China.

Colloids and Surfaces. B, Biointerfaces
|January 29, 2026
PubMed

Insights

The drug CP-31398 can prevent the pathological aggregation of mutant tumor suppressor p53 (protein 53) by restoring its function. This may offer a new cancer therapy strategy for p53 mutations.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Cancer Research

Background:

  • Tumor suppressor p53 (protein 53) can form liquid droplets, but mutations can lead to pathological aggregation, causing loss of function or oncogenic activity.
  • Understanding the phase behavior of mutant p53 is crucial for developing targeted cancer therapies.

Purpose of the Study:

  • To investigate the effects of CP-31398 on the phase behavior of p53 mutants.
  • To explore CP-31398 as a potential therapeutic strategy for cancers with p53 mutations.

Main Methods:

  • Studied the effects of CP-31398 on R175H and R248W p53 mutants.
  • Utilized molecular dynamics simulations to analyze structural stability.
  • Assessed the restoration of p53-DNA interactions and functional droplet formation.

Main Results:

  • CP-31398 inhibited pathological aggregation of R175H p53, restored its DNA binding, and promoted functional droplet formation.
  • CP-31398 regulated R248W p53 phase behavior but did not restore functional condensate formation.
  • Molecular dynamics simulations revealed CP-31398 stabilized the zinc-binding domain and 251-258 segment of R175H p53.

Conclusions:

  • CP-31398 can restore liquid-liquid phase separation and function in specific p53 mutants (e.g., R175H).
  • The drug's mechanism involves enhancing structural stability of the mutant p53.
  • These findings suggest CP-31398 as a potential therapeutic agent for cancers harboring p53 mutations.
Keywords:
CP-31398CondensatesLLPSR175HR248W

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