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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Drugs Targeting p53 Mutations with FDA Approval and in Clinical Trials
Shigeto Nishikawa1, Tomoo Iwakuma1,2
1Department of Pediatrics, Division of Hematology & Oncology, Children's Mercy Research Institute, Kansas City, MO 64108, USA.
Abstract:
Mutations in the tumor suppressor p53 (p53) promote cancer progression. This is mainly due to loss of function (LOS) as a tumor suppressor, dominant-negative (DN) activities of missense mutant p53 (mutp53) over wild-type p53 (wtp53), and wtp53-independent oncogenic activities of missense mutp53 by interacting with other tumor suppressors or oncogenes (gain of function: GOF). Since p53 mutations occur in ~50% of human cancers and rarely occur in normal tissues, p53 mutations are cancer-specific and ideal therapeutic targets. Approaches to target p53 mutations include (1) restoration or stabilization of wtp53 conformation from missense mutp53, (2) rescue of p53 nonsense mutations, (3) depletion or degradation of mutp53 proteins, and (4) induction of p53 synthetic lethality or targeting of vulnerabilities imposed by p53 mutations (enhanced YAP/TAZ activities) or deletions (hyperactivated retrotransposons). This review article focuses on clinically available FDA-approved drugs and drugs in clinical trials that target p53 mutations and summarizes their mechanisms of action and activities to suppress cancer progression.
Insights
Mutations in tumor suppressor p53 (p53) drive cancer. This review covers FDA-approved and investigational drugs targeting p53 mutations, exploring mechanisms to suppress tumor growth.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Mutations in the tumor suppressor p53 (p53) are prevalent in approximately 50% of human cancers.
- These mutations lead to loss of tumor suppressive functions, dominant-negative effects, and oncogenic gain-of-function activities.
- p53 mutations are cancer-specific, making them attractive therapeutic targets.
Purpose of the Study:
- To review clinically available FDA-approved drugs and drugs in clinical trials that target p53 mutations.
- To summarize the mechanisms of action for these drugs.
- To evaluate their efficacy in suppressing cancer progression.
Main Methods:
- Literature review of FDA-approved drugs and clinical trial candidates targeting p53 mutations.
- Analysis of drug mechanisms, including restoration of wild-type p53, rescue of nonsense mutations, degradation of mutant p53, and synthetic lethality induction.
- Summary of drug activities against cancer progression.
Main Results:
- Several therapeutic strategies are being investigated to target p53 mutations.
- These strategies include restoring wild-type p53 conformation, rescuing nonsense mutations, degrading mutant p53, and exploiting synthetic lethality.
- Drugs targeting p53 mutations show promise in suppressing cancer progression.
Conclusions:
- Targeting p53 mutations represents a promising strategy in cancer therapy.
- A range of therapeutic approaches are under investigation, with several drugs in clinical trials.
- Further research and clinical development are crucial to fully realize the therapeutic potential of targeting p53 mutations.
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