Small molecule inhibitors of the p53-MDM2
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Updated: Jul 3, 2026

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Published on: February 9, 2021
1College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.
Abstract:
Recent researches have discovered that MDM2 (murine double minute 2, or HDM2 for the human congener) protein is the main negative regulator of p53, which is an attractive therapeutic target in oncology because its tumor-suppressor activity which can be stimulated to eradicate tumor cells. Inhibiting the p53-MDM2 interaction is a promising approach for activating p53, because this association is well characterized at the structural and biological levels. A number of drug screening approaches and technologies have been used to identity novel inhibitors of the p53-MDM2 interaction. This review will detail the development history of MDM2 protein and the p53-MDM2 interaction, the major classes of novel small-molecular p53-MDM2 binding inhibitors, key medicinal action with the protein-protein interaction and in vitro or in vivo biological activities.
Insights
Researchers are developing small-molecule inhibitors to block the interaction between MDM2 (murine double minute 2) and p53. This strategy aims to reactivate the tumor-suppressor function of p53 for cancer therapy.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- MDM2 (murine double minute 2) protein is a key negative regulator of the p53 tumor suppressor.
- The p53-MDM2 interaction is a critical target for cancer therapeutics due to p53's role in tumor cell eradication.
- Understanding this interaction is crucial for developing novel anti-cancer strategies.
Purpose of the Study:
- To review the development of MDM2 protein and the p53-MDM2 interaction.
- To outline major classes of small-molecule inhibitors targeting the p53-MDM2 binding.
- To discuss the medicinal chemistry and biological activities of these inhibitors.
Main Methods:
- Literature review of MDM2 protein and p53-MDM2 interaction research.
- Analysis of drug screening approaches and technologies for identifying inhibitors.
- Evaluation of medicinal chemistry and biological data for small-molecule inhibitors.
Main Results:
- Detailed history of MDM2 protein and p53-MDM2 interaction research.
- Categorization of novel small-molecule inhibitors targeting the p53-MDM2 interaction.
- Summary of key medicinal actions and in vitro/in vivo biological activities.
Conclusions:
- Inhibiting the p53-MDM2 interaction is a promising therapeutic strategy in oncology.
- Small-molecule inhibitors targeting this interaction show potential for cancer treatment.
- Further research into these inhibitors is warranted for clinical application.
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