Cited by 94Protein Degradation and InhibitorsProtein Kinase Regulation and GTPase SignalingProtein Tyrosine Phosphatases

Discovery of the First-in-Class Agonist-Based SOS1 PROTACs Effective in Human Cancer Cells Harboring Various KRAS Mutations

Zhou, Chuan, Fan, Zisheng, Zhou, Zehui, Li, Yupeng, Cui, Rongrong, Liu, Chaoyi, Zhou, Guizhen, Diao, Xingxing +4 more·2022·Journal of Medicinal Chemistry

Abstract

Regulating SOS1 functions may result in targeted pan-KRAS therapies. Small-molecule SOS1 inhibitors showed promising anticancer potential, and the most advanced inhibitor BI 1701963 is currently under phase I clinical studies. SOS1 agonists provide new opportunities to treat cancer; however, the underlying mechanisms still warrant investigation. We here report the discovery of the first SOS1 PROTACs designed uniquely by connecting a VHL ligand to the reported SOS1 agonist, ensuring that the observed inhibitory activity results from degraders. The best compound 9d induced SOS1 degradation in various KRAS-driven cancer cells and displayed superior antiproliferation activity compared to the agonist itself. Tumor xenograft study clearly showed the promising antitumor potency of 9d against human lung cancer. This study provides good evidence of using agonists to design SOS1 PROTACs and demonstrates that targeted SOS1 degradation represents an effective therapeutic strategy for overcoming KRAS-driven cancers.

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Crossref · 10.1021/acs.jmedchem.1c01774

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  • BI-1701963 has potential applications in the treatment of various diseases, including adenocarcinoma, advanced solid tumors, biliary tract cancer, colorectal cancer, lung tumors, metastatic colorectal cancer, and metastatic pancreatic cancer.

    “BI-1701963 has potential applications in the treatment of various diseases, including adenocarcinoma, advanced solid tumors, biliary tract cancer, colorectal cancer, lung tumors, metastatic colorectal cancer, and metastatic pancreatic cancer.334”

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Authors
Zhou, C., Fan, Z., Zhou, Z., Li, Y., Cui, R., Liu, C., Zhou, G., Diao, X., Jiang, H., Zheng, M., Zhang, S., & Xu, T.
Affiliations
  • Chinese Academy of Sciences (CN)
  • Nanjing University of Chinese Medicine (CN)
  • University of Minnesota (US)
Corresponding author
  • Zheng, Mingyue
  • Zhang, Sulin
  • Xu, Tianfeng
Venue
Journal of Medicinal Chemistry
Published
2022-03-01
Volume
65
Issue
5
Pages
3923-3942
ISSN
  • 0022-2623 (ISSN-L)
  • 1520-4804
OpenAlex
W4214695568
Cited by
94
References
30
Citations by year
2026: 9 · 2025: 27 · 2024: 30 · 2023: 21 · 2022: 7
FWCI
7.18
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Medicinal Chemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Natural Science Foundation of Shanghai (20ZR1468500)
  • China Postdoctoral Science Foundation (2021M693270)
  • Science and Technology Commission of Shanghai Municipality
  • National Natural Science Foundation of China (81903639)
  • Lingang Laboratory (LG202102-01-02)
  • Shanghai Pujiang Program (19PJ1411400)
  • Shanghai Sailing Program (19YF1457800)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Tyrosine Phosphatases
Keywords
KRAS mutation, KRAS-driven cancers, protein degradation, lung cancer, anti-proliferation, tumor xenografts
MeSH terms
Antineoplastic Agents, Humans, Lung Neoplasms, Mutation, Proto-Oncogene Proteins p21(ras), Intercellular Signaling Peptides and Proteins

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