2. Academic Validation
  3. Identification of 2-hydroxybenzoic acid derivatives as selective SIRT5 inhibitors

Identification of 2-hydroxybenzoic acid derivatives as selective SIRT5 inhibitors

  • Eur J Med Chem. 2022 Nov 5;241:114623. doi: 10.1016/j.ejmech.2022.114623.
Yanghan Liu 1,  Bikash Debnath 2,  Surinder Kumar 3,  David B Lombard 4,  Nouri Neamati 5
Affiliations

Affiliations

  • 1 State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China; Department of Medicinal Chemistry, College of Pharmacy and Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, United States.
  • 2 Department of Medicinal Chemistry, College of Pharmacy and Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, United States.
  • 3 Department of Pathology and Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Pathology & Laboratory Medicine, Sylvester Comprehensive Cancer Center, Miami, FL, 33136, United States.
  • 4 Department of Pathology and Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, United States; Department of Pathology & Laboratory Medicine, Sylvester Comprehensive Cancer Center, Miami, FL, 33136, United States. Electronic address: dbl68@miami.edu.
  • 5 Department of Medicinal Chemistry, College of Pharmacy and Rogel Cancer Center, University of Michigan, Ann Arbor, MI, 48109, United States. Electronic address: neamati@umich.edu.
PMID: 35932566 DOI: 10.1016/j.ejmech.2022.114623
Abstract

The Sirtuin deacetylase SIRT5 plays important roles in regulating multiple metabolic pathways, and potentially represents an attractive target for the treatment of several human diseases, especially Cancer. In this study, we report the identification of the hit compound 11 bearing a 2-hydroxybenzoic acid functional group as a novel SIRT5-selective inhibitor via our medium-throughput thermal shift screening assay. Hit 11 stabilizes SIRT5 in a dose-dependent manner and shows moderate inhibitory activity against SIRT5 and high subtype selectivity over SIRT1, 2, and 3 in a trypsin coupled enzyme-based assay. The carboxylic acid and the adjacent hydroxyl group of 11 are essential for maintaining activity. To further improve the potency of compound 11, a lead optimization was carried out, resulting in compound 43 with a 10-fold improved potency. Overall, compound 11 represents a promising new chemical scaffold for further investigation to develop SIRT5-selective inhibitors.

Keywords

2-Hydroxybenzoic acid; Molecular docking; Protein-ligand interactions fingerprinting; SIRT5 inhibitors; Structure-activity relationship.

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