MD-4251: A First-in-Class Oral MDM2 Degrader Inducing Complete Tumor Regression with Single-Dose Administration
MDM2 is a key negative regulator of the tumor suppressor p53 and an attractive target for cancer therapy. We report the discovery of MD-4251, the first orally efficacious MDM2 degrader developed using PROTAC technology. MD-4251 induces potent and rapid MDM2 degradation in RS4;11 cells (DC<sub>50</sub> = 0.2 nM; <i>D</i><sub>max</sub> = 96% at 2 h), leading to robust p53 activation. It selectively inhibits the growth of acute leukemia cell lines with wild-type p53, with minimal activity in p53 mutant lines. MD-4251 shows excellent oral bioavailability in mice, favorable metabolic stability, and no CYP or hERG liabilities. A single oral dose induces sustained MDM2 depletion and attains complete tumor regression in vivo. These results support MD-4251 as a promising therapeutic candidate for cancers through depletion of MDM2.
Authors
- Angelo Aguilar (ORCID: https://orcid.org/0009-0007-0946-9170)
- Ranjan Kumar Acharyya (ORCID: https://orcid.org/0000-0002-1562-0216)
- Biao Hu (ORCID: https://orcid.org/0000-0002-4691-6490)
- Wei Jiang (ORCID: https://orcid.org/0000-0002-5306-1398)
- Hoda Metwally
- Bo Wen (ORCID: https://orcid.org/0000-0002-8337-220X)
- Qiuxia Li (ORCID: https://orcid.org/0000-0001-5835-0749)
- Longchuan Bai (ORCID: https://orcid.org/0000-0003-1025-2925)
- Donna McEachern (ORCID: https://orcid.org/0000-0001-8662-3425)
- Duxin Sun (ORCID: https://orcid.org/0000-0002-6406-2126)
- Shaomeng Wang (ORCID: https://orcid.org/0000-0002-8782-6950)
- Yu Wang (ORCID: https://orcid.org/0000-0002-6608-4310)
- Liyue Huang
Institutions
- University of Michigan (US)
- Medicina (PL)
- U-M Rogel Cancer Center (US)
Publication Details
- Journal
- Journal of Medicinal Chemistry
- Published
- 2025-06-13
- DOI
- https://doi.org/10.1021/acs.jmedchem.5c00809
- Citations
- 6
- Primary Topic
- Cancer-related Molecular Pathways
- Type
- article
- Field-Weighted Citation Impact
- 6.27
Funders
- NIH Clinical Center
- Center for Scientific Review