Cited by 119Protein Kinase Regulation and GTPase SignalingSynthesis and biological activityLung Cancer Treatments and Mutations

Discovery of N-(1-Acryloylazetidin-3-yl)-2-(1 H-indol-1-yl)acetamides as Covalent Inhibitors of KRASG12C

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Shin, Youngsook, Jeong, Joon Won, Wurz, Ryan P., Achanta, Pragathi, Arvedson, Tara, Bartberger, Michael D., Campuzano, Iain D. G., Fucini, Ray +19 more·2019·ACS Medicinal Chemistry Letters

Abstract

KRAS regulates many cellular processes including proliferation, survival, and differentiation. Point mutants of KRAS have long been known to be molecular drivers of cancer. KRAS p.G12C, which occurs in approximately 14% of lung adenocarcinomas, 3–5% of colorectal cancers, and low levels in other solid tumors, represents an attractive therapeutic target for covalent inhibitors. Herein, we disclose the discovery of a class of novel, potent, and selective covalent inhibitors of KRAS G12C identified through a custom library synthesis and screening platform called Chemotype Evolution and structure-based design. Identification of a hidden surface groove bordered by H95/Y96/Q99 side chains was key to the optimization of this class of molecules. Best-in-series exemplars exhibit a rapid covalent reaction with cysteine 12 of GDP-KRAS G12C with submicromolar inhibition of downstream signaling in a KRAS G12C -specific manner.

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  • A library of 3,300 acrylamides was screened in a thiol reactivity assay, a RAF-coupled nucleotide exchange assay, and an intact MS assay.

    “A library of 3,300 acrylamides was screened in three assays: a thiol reactivity assay, a RAF-coupled nucleotide exchange assay and an intact MS assay158.”

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Authors
Shin, Y., Jeong, J. W., Wurz, R. P., Achanta, P., Arvedson, T., Bartberger, M. D., Campuzano, I. D. G., Fucini, R., Hansen, S. K., Ingersoll, J., Iwig, J. S., Lipford, J. R., Ma, V., Kopecky, D. J., McCarter, J., San Miguel, T., Mohr, C., Sabet, S., Saiki, A. Y., Sawayama, A., Sethofer, S., Tegley, C. M., Volak, L. P., Yang, K., Lanman, B. A., Erlanson, D. A., & Cee, V. J.
Affiliations
  • Amgen (United States) (US)
  • Carmot Therapeutics (United States) (US)
  • Carmot Therapeutics, Inc. 740 Heinz Avenue, Berkeley, California 94710, United States
Corresponding author
  • Erlanson, Daniel A.
  • Cee, Victor J.
Venue
ACS Medicinal Chemistry Letters
Published
2019-08-20
Volume
10
Issue
9
Pages
1302-1308
ISSN
1948-5875 (ISSN-L)
OpenAlex
W2969336671
Cited by
113
References
18
Citations by year
2026: 16 · 2025: 17 · 2024: 15 · 2023: 21 · 2022: 22 · 2021: 8 · 2020: 12 · 2019: 2
FWCI
3.89
Type
journal article
Language
en
Open access
Locations
  • ACS Medicinal Chemistry Letters (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institutes of Health (1s10od021832-01)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Physical Sciences › Chemistry › Organic Chemistry › Synthesis and biological activity
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
Keywords
KRAS G12C, covalent inhibitors, lung adenocarcinoma, colorectal cancer, surface grooves, structure-based design

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