作者:Lindon W. K. Moodie、Madlen Hubert、Xin Zhou、Michael F. Albers、Richard Lundmark、Sjoerd Wanrooij、Christian Hedberg
DOI:10.1002/anie.201812326
日期:2019.1.28
Although the complete structure of colibactin has not been determined, key structural features have been described including an electrophilic cyclopropane motif, which is believed to alkylate DNA. To investigate the influence of the putative “warhead” and the prodrug strategy on genotoxicity, a series of photolabile colibactin probes were prepared that upon irradiation induced a pks+ like phenotype in HeLa
Colibactin是由人类微生物群中某些具有pks基因岛的细菌组成的小分子。Pks +细菌在真核细胞中诱导遗传毒性表型,并已与大肠癌的进展有关。Colibactin以良性的前药形式生产,在出口前,会被产生的细菌酶促成熟成其活性形式。尽管大肠菌素的完整结构尚未确定,但已描述了关键的结构特征,包括亲电的环丙烷基序,该基序被认为可以使DNA烷基化。为了研究推定的“战斗部”和前药策略对遗传毒性的影响,制备了一系列光不稳定的大肠埃希菌素探针,它们在辐照后诱导HeLa细胞中的pks +样表型。此外,DNA交联和可点击类似物成像研究的结果提出了以下假设:大肠菌素通过直接靶向DNA来影响其遗传毒性。