Antagonism of a zinc metalloprotease using a unique metal-chelating scaffold: tropolones as inhibitors of P. aeruginosa elastase
作者:Jessica L. Fullagar、Amanda L. Garner、Anjali K. Struss、Joshua A. Day、David P. Martin、Jing Yu、Xiaoqing Cai、Kim D. Janda、Seth M. Cohen
DOI:10.1039/c3cc41191e
日期:——
Tropolone emerged from the screening of a chelator fragment library (CFL) as an inhibitor of the Zn2+-dependent virulence factor, Pseudomonas aeruginosa elastase (LasB). Based on this initial hit, a series of substituted tropolone-based LasB inhibitors was prepared, and a compound displaying potent activity in vitro and in a bacterial swarming assay was identified. Importantly, this inhibitor was found to be specific for LasB over other metalloenzymes, validating the usage of tropolone as a viable scaffold for identifying first-in-class LasB inhibitors.
曲贝酮在螯合剂片段文库(CFL)筛选中被发现是锌离子依赖的毒力因子铜绿假单胞菌弹性蛋白酶(LasB)的抑制剂。基于这个初始化合物,制备了一系列取代的曲贝酮类LasB抑制剂,并发现了一个在体外和细菌游动实验中显示出强效活性的化合物。重要的是,该抑制剂被发现对LasB具有特异性,而对其他金属酶没有作用,这验证了曲贝酮作为开发首创LasB抑制剂的可行支架。