Rational Design and Binding Mode Duality of MDM2–p53 Inhibitors
Abstract
Structural analysis of both the MDM2-p53 protein-protein interaction and several small molecules bound to MDM2 led to the design and synthesis of tetrasubstituted morpholinone 10, an MDM2 inhibitor with a biochemical IC50 of 1.0 μM. The cocrystal structure of 10 with MDM2 inspired two independent optimization strategies and resulted in the discovery of morpholinones 16 and 27 possessing distinct binding modes. Both analogues were potent MDM2 inhibitors in biochemical and cellular assays, and morpholinone 27 (IC50 = 0.10 μM) also displayed suitable PK profile for in vivo animal experiments. A pharmacodynamic (PD) experiment in mice implanted with human SJSA-1 tumors showed p21(WAF1) mRNA induction (2.7-fold over vehicle) upon oral dosing of 27 at 300 mg/kg.
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Substituting hydroxyl group with cyclopropylsulfonamide allowed binding of the compound to Gly58 amino acid residue near the cavity of Phe19, further improving its affinity for MDM2 protein and its cellular activity.
“Substituting its hydroxyl group with cyclopropylsulfonamide allowed binding of the compound to the Gly58 amino acid residue near the cavity of Phe19, further improving its affinity for MDM2 protein and its cellular activity.”
From Targeting p53–MDM2 interaction by small-molecule inhibitors: learning from MDM2 inhibitors in clinical trials (2022) · cites this paper as [52]
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- Authors
- Gonzalez-Lopez de Turiso, F., Sun, D., Rew, Y., Bartberger, M. D., Beck, H. P., Canon, J., Chen, A., Chow, D., Correll, T. L., Huang, X., Julian, L. D., Kayser, F., Lo, M.-C., Long, A. M., McMinn, D., Oliner, J. D., Osgood, T., Powers, J. P., Saiki, A. Y., Schneider, S., Shaffer, P., Xiao, S.-H., Yakowec, P., Yan, X., Ye, Q., Yu, D., Zhao, X., Zhou, J., Medina, J. C., & Olson, S. H.
- Affiliations
- Amgen (United States) (US)
- Corresponding author
- Sun, Daqing
- ORCID
- Venue
- Journal of Medicinal Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2013-05-06
- Volume
- 56
- Issue
- 10
- Pages
- 4053-4070
- ISSN
- 0022-2623 (ISSN-L)
- 1520-4804
- OpenAlex
- W2155996499
- Cited by
- 82
- References
- 36
- Citations by year
- 2026: 5 · 2025: 2 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 5 · 2020: 9 · 2019: 4 · 2018: 5 · 2017: 3 · 2016: 5 · 2015: 10 · 2014: 20 · 2013: 2
- FWCI
- 7.67
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Medicinal Chemistry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
- Physical Sciences › Chemistry › Organic Chemistry › Synthesis and biological activity
- Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
- Keywords
- MDM2 inhibitors, p53, protein-protein interaction, co-crystal structure, structure-based drug design, oral bioavailability, tumor xenografts, small molecule inhibitors
- MeSH terms
- Animals, Antineoplastic Agents, Circular Dichroism, Crystallography, Female, Humans, Indicators and Reagents, Mice, Nude, Models, Molecular, Morpholines, Piperidines, Stereoisomerism, Structure-Activity Relationship, Drug Design, Tumor Suppressor Protein p53, Crystallography, X-Ray, Xenograft Model Antitumor Assays, Mice, Proto-Oncogene Proteins c-mdm2
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