Chemical Interaction of Protein Cysteine Residues with Reactive Metabolites of Methyleugenol
作者:Yukun Feng、Hui Wang、Qian Wang、Wenlin Huang、Ying Peng、Jiang Zheng
DOI:10.1021/acs.chemrestox.6b00290
日期:2017.2.20
well documented, and metabolic activation has been suggested to involve in ME-induced toxicities. The objective of this study was to identify chemical identity of interactions of protein with reactive metabolites of ME. Modification of cysteine residues of protein was observed in microsomal incubations and mice after exposure to ME. Three types of protein modification derived from the corresponding epoxide
甲基丁香酚(ME)是一种烯基苯化合物,是几种草药的天然成分,在食品中用作调味剂,在化妆品中用作香料。ME的肝毒性,细胞毒性和致癌作用已得到充分证明,并且代谢激活被认为与ME诱导的毒性有关。这项研究的目的是确定蛋白质与ME的反应性代谢物相互作用的化学特性。在微粒体温育和暴露于ME后的小鼠中观察到蛋白质的半胱氨酸残基修饰。在体内和体外检测到三种类型的衍生自相应的环氧化物的蛋白质修饰,α,β-不饱和醛和ME的碳鎓离子。蛋白质内收以时间和剂量依赖性方式发生。地塞米松,酮康唑和l-丁硫氨酸亚砜亚胺增加了ME诱导的蛋白质修饰,这与ME的肝毒性成正比。这些发现促进了对ME毒性机制作用的理解。