Abstract:
:Cathepsin K is a major drug target for osteoporosis and related-bone disorders. Using a combination of virtual combinatorial chemistry, QSAR modeling, and molecular docking studies, a series of cathepsin K inhibitors based on N-(functionalized benzoyl)-homocycloleucyl-glycinonitrile scaffold was developed. In order to avoid previous problems of cathepsin K inhibitors associated with lysosomotropism of compounds with basic character that resulted in off-target effects, a weakly- to nonbasic moiety was incorporated into the P3 position. Compounds 5, 6, and 9 were highly selective for cathepsin K when compared with cathepsins L and S, with the Ki values in the 10-30 nM range. The kinetic studies revealed that the new compounds exhibited reversible tight binding to cathepsin K, while the X-ray structural studies showed covalent and noncovalent binding between the nitrile group and the catalytic cysteine (Cys25) site.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Borišek J,Vizovišek M,Sosnowski P,Turk B,Turk D,Mohar B,Novič Mdoi
10.1021/acs.jmedchem.5b00746subject
Has Abstractpub_date
2015-09-10 00:00:00pages
6928-37issue
17eissn
0022-2623issn
1520-4804journal_volume
58pub_type
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