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Updated: Feb 2, 2026

Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
Small Molecules Targeting Mutant P53: A Promising Approach for Cancer Treatment
Elizabeth A Lopes1, Sara Gomes2, Lucília Saraiva2
1Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal.
Abstract:
More than half of all human tumors express mutant forms of p53, with the ovary, lung, pancreas, and colorectal cancers among the tumor types that display the highest prevalence of p53 mutations. In addition, the expression of mutant forms of p53 in tumors is associated with poor prognosis due to increased chemoresistance and invasiveness. Therefore, the pharmacological restoration of wild-type-like activity to mutant p53 arises as a promising therapeutic strategy against cancer. This review is focused on the most relevant mutant p53 small molecule reactivators described to date. Despite some of them have entered into clinical trials, none has reached the clinic, which emphasizes that new pharmacological alternatives, particularly with higher selectivity and lower adverse toxic side effects, are still required.
Insights
Mutant p53 proteins are common in many cancers and linked to poor outcomes. Reactivating mutant p53 with drugs is a promising strategy, but new, safer options are needed.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Over 50% of human tumors harbor mutations in the p53 tumor suppressor gene.
- Mutant p53 expression correlates with increased tumor invasiveness, chemoresistance, and poor patient prognosis.
- Restoring wild-type p53 activity presents a potential therapeutic avenue for various cancers.
Purpose of the Study:
- To review key small molecule compounds designed to reactivate mutant p53.
- To assess the current landscape of mutant p53 reactivators in preclinical and clinical development.
- To highlight the need for novel pharmacological agents with improved selectivity and safety profiles.
Main Methods:
- Literature review of scientific publications and clinical trial data.
- Analysis of small molecule mutant p53 reactivators.
- Evaluation of drug efficacy, selectivity, and toxicity.
Main Results:
- Several small molecule compounds targeting mutant p53 have been identified and developed.
- Some compounds have advanced to clinical trials for various cancer types.
- No mutant p53 reactivator has yet reached clinical approval, indicating ongoing challenges.
Conclusions:
- Targeting mutant p53 reactivation is a viable anticancer strategy.
- Further research is essential to develop more effective and safer mutant p53 reactivators.
- The development of novel pharmacological agents with enhanced selectivity and reduced side effects is critical for clinical success.
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