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J Med Chem. 2002 Dec 5;45(25):5471-82.

Design and synthesis of dipeptide nitriles as reversible and potent Cathepsin S inhibitors.

Author information

1
Boehringer Ingelheim Pharmaceuticals, Inc. 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, USA. yward@rdg.boehringer-ingelheim.com

Erratum in

  • J Med Chem. 2003 Feb 27;46(5):882.. Giradot Marc [corrected to Girardot Marc].

Abstract

The specificity of the immune response relies on processing of foreign proteins and presentation of antigenic peptides at the cell surface. Inhibition of antigen presentation, and the subsequent activation of T-cells, should, in theory, modulate the immune response. The cysteine protease Cathepsin S performs a fundamental step in antigen presentation and therefore represents an attractive target for inhibition. Herein, we report a series of potent and reversible Cathepsin S inhibitors based on dipeptide nitriles. These inhibitors show nanomolar inhibition of the target enzyme as well as cellular potency in a human B cell line. The first X-ray crystal structure of a reversible inhibitor cocrystallized with Cathepsin S is also reported.

PMID:
12459015
[Indexed for MEDLINE]

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