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Article Abstract
Hepsin, a type II transmembrane serine protease, is upregulated in prostate cancer and known to be involved in the progression of metastasis. Here we report a structure-guided approach, which resulted in the discovery of 2-aryl/pyridin-2-yl-1H-indole derivatives as potent and selective inhibitors of hepsin. Potent and selective inhibition of hepsin by compound 8 is likely due to interactions of the amidine group at the S1 site with the cyclohexyl ring from the 2-aryl group projecting towards the S1' site and the tert-hydroxyl group interacting with His57 side-chain as revealed by X-ray crystallography. Compounds 8 and 10, showed Ki of 0.1 μM for hepsin, and exhibited inhibition of invasion and migration of hepsin-overexpressing cell line. Compounds described here could serve as useful tool reagents to investigate the role of hepsin as a potential therapeutic target in cancer.
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| http://dx.doi.org/10.1016/j.bmcl.2015.09.042 | DOI Listing |
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