The inside cover picture shows the caspase 1 inhibitor NCGC00183434 modeled in the active site making key contacts between the cysteine of the enzyme and the nitrile group of the inhibitor, as well as key contacts between the aspartic acid mimetic and core arginine residues. NCGC00183434 was found t
A Highly Potent and Selective Caspase 1 Inhibitor that Utilizes a Key 3-Cyanopropanoic Acid Moiety
✍ Scribed by Matthew B. Boxer; Amy M. Quinn; Min Shen; Ajit Jadhav; William Leister; Anton Simeonov; Douglas S. Auld; Craig J. Thomas
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 493 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1860-7179
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✦ Synopsis
Abstract
Herein, we examine the potential of a nitrile‐containing propionic acid moiety as an electrophile for covalent attack by the active‐site cysteine residue of caspase 1. The syntheses of several cyanopropanate‐containing small molecules based on the optimized peptidic scaffold of prodrug VX‐765 were accomplished. These compounds were found to be potent inhibitors of caspase 1 (IC~50~ values ≤1 nM). Examination of these novel small molecules against a caspase panel demonstrated an impressive degree of selectivity for caspase 1 inhibition over other caspase isozymes. Assessment of hydrolytic stability and selected ADME properties highlighted these agents as potentially useful tools for studying caspase 1 down‐regulation in various settings, including in vivo analyses.
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