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ACS medicinal chemistry letters
May 13, 2021;12 (5): 726-731.

Discovery of a Potent and Selective Covalent p300/CBP Inhibitor.

Anthony Mastracchio, Chunqiu Lai, Enrico Digiammarino, Damien B Ready, Loren M Lasko, Kenneth D Bromberg, William J McClellan, Debra Montgomery, Vlasios Manaves, Bailin Shaw, Mikkel Algire, Melanie J Patterson, Chaohong C Sun, Saul Rosenberg, Albert Lai, Michael R Michaelides
Author Information
  1. Anthony Mastracchio: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States. ORCID
  2. Chunqiu Lai: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  3. Enrico Digiammarino: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  4. Damien B Ready: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States. ORCID
  5. Loren M Lasko: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  6. Kenneth D Bromberg: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  7. William J McClellan: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  8. Debra Montgomery: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  9. Vlasios Manaves: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  10. Bailin Shaw: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  11. Mikkel Algire: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  12. Melanie J Patterson: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  13. Chaohong C Sun: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  14. Saul Rosenberg: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  15. Albert Lai: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States.
  16. Michael R Michaelides: AbbVie, Inc., 1 North Waukegan Road, North Chicago, Illinois 60064, United States. ORCID
PMID: 34055218 DOI: 10.1021/acsmedchemlett.0c00654

Abstract

Aberrant gene activation driven by the histone acetyltransferases p300 and CREB binding protein (CBP) has been linked to several diseases, including cancers. Because of this, many efforts have been aimed toward the targeting of the closely related paralogues, p300 and CBP, but these endeavors have been exclusively directed toward noncovalent inhibitors. X-ray crystallography of revealed that both p300 and CBP possess a cysteine (C1450) near the active site, thus rendering covalent inhibition an attractive chemical approach. Herein we report the development of compound , an acrylamide-based inhibitor of p300/CBP that forms a covalent adduct with C1450. We demonstrated using mass spectrometry that compound selectively targets C1450, and we also validated covalent binding using kinetics experiments and cellular washout studies. The discovery of covalent inhibitor gives us a unique tool for the study of p300/CBP biology.

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Journal Article

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