Download MendeleyDevelopment of Benzenesulfonamide Derivatives as Potent Glutathione Transferase Omega-1 Inhibitors.
Xie, Y., Tummala, P., Oakley, A.J., Deora, G.S., Nakano, Y., Rooke, M., Cuellar, M.E., Strasser, J.M., Dahlin, J.L., Walters, M.A., Casarotto, M.G., Board, P.G., Baell, J.B.(2020) J Med Chem 63: 2894-2914
- PubMed: 32105470
- DOI: https://doi.org/10.1021/acs.jmedchem.9b01391
- Primary Citation of Related Structures:
6PNM, 6PNN, 6PNO - PubMed Abstract:
Glutathione transferase omega-1 (GSTO1-1) is an enzyme whose function supports the activation of interleukin (IL)-1β and IL-18 that are implicated in a variety of inflammatory disease states for which small-molecule inhibitors are sought. The potent reactivity of the active-site cysteine has resulted in reported inhibitors that act by covalent labeling. In this study, structure-activity relationship (SAR) elaboration of the reported GSTO1-1 inhibitor C1-27 was undertaken. Compounds were evaluated for inhibitory activity toward purified recombinant GSTO1-1 and for indicators of target engagement in cell-based assays. As covalent inhibitors, the k inact / K I values of selected compounds were determined, as well as in vivo pharmacokinetics analysis. Cocrystal structures of key novel compounds in complex with GSTO1-1 were also solved. This study represents the first application of a biochemical assay for GSTO1-1 to determine k inact / K I values for tested inhibitors and the most extensive set of cell-based data for a GSTO1-1 inhibitor SAR series reported to date. Our research culminated in the discovery of 25 , which we propose as the preferred biochemical tool to interrogate cellular responses to GSTO1-1 inhibition.
Organizational Affiliation:
Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, VIC 3052, Australia.
