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Structure-Based Design of a Covalent Inhibitor of the SET Domain-Containing Protein 8 (SETD8) Lysine Methyltransferase

Journal Article · · Journal of Medicinal Chemistry
 [1];  [1];  [2];  [2];  [2];  [1];  [3];  [1];  [3];  [3];  [2];  [2];  [2];  [1]
  1. Icahn School of Medicine at Mount Sinai, New York, NY (United States)
  2. Univ. of Toronto, ON (Canada)
  3. Memorial Sloan Kettering Cancer Center, New York, NY (United States)
Selective inhibitors of protein lysine methyltransferases, including SET domain-containing protein 8 (SETD8), are highly desired, as only a fraction of these enzymes are associated with high-quality inhibitors. From our previously discovered SETD8 inhibitor, we developed a more potent analog and solved a cocrystal structure, which is the first crystal structure of SETD8 in complex with a small-molecule inhibitor. This cocrystal structure allowed the design of a covalent inhibitor of SETD8 (MS453), which specifically modifies a cysteine residue near the inhibitor binding site, has an IC50 value of 804 nM, reacts with SETD8 with near-quantitative yield, and is selective for SETD8 against 28 other methyltransferases. We also solved the crystal structure of the covalent inhibitor in complex with SETD8. In conclusiont, this work provides atomic-level perspective on the inhibition of SETD8 by small molecules and will help identify high-quality chemical probes of SETD8.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
AbbVie; American Cancer Society; Bayer Pharma AG; Boehringer Ingelheim; Canada Foundation for Innovation; Eshelman Institute for Innovation; Genome Canada; Innovative Medicines Initiative; Janssen; Merck & Co.; National Institutes of Health (NIH); Novartis Pharma AG; Ontario Ministry of Economic Development and Innovation; Pfizer; São Paulo Research Foundation (FAPESP); Takeda; USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23); Wellcome Trust
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1352275
Journal Information:
Journal of Medicinal Chemistry, Journal Name: Journal of Medicinal Chemistry Journal Issue: 21 Vol. 59; ISSN 0022-2623
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

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Cited By (4)

Inhibitors of Protein Methyltransferases and Demethylases journal March 2017
Novel pharmacological maps of protein lysine methyltransferases: key for target deorphanization journal July 2018
The dynamic conformational landscape of the protein methyltransferase SETD8 journal May 2019
Quinazolines as inhibitors of chromatin-associated proteins in histones journal February 2019

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