A furanyl acryl conjugated coumarin as an efficient inhibitor and a highly selective off–on fluorescent probe for covalent labelling of thioredoxin reductase
作者:Lei Huang、Yu Chen、Baoxia Liang、Bengang Xing、Gesi Wen、Shuni Wang、Xin Yue、Cuige Zhu、Jun Du、Xianzhang Bu
DOI:10.1039/c4cc02119c
日期:——
A simple and novel furanyl acryl conjugated coumarin fluorophore was designed as an effective thioredoxin reductase (TrxR)-responding fluorescent probe by an activity-guided approach. Basically, the α,β-unsaturated ketone moiety in the probe structure could quench the fluorescence of the coumarin, but upon the covalent modification of TrxR, a significant fluorescence could be generated, which has been confirmed to be obviously selective over Trx, GSH, Cys and DTT.
设计了一种简单新颖的呋喃基丙烯酸共轭香豆素荧光探针,作为一种有效的硫氧还蛋白还原酶(TrxR)响应的荧光探针,采用了基于活性的指导方法。基本上,探针结构中的α,β-不饱和酮基团能够淬灭香豆素的荧光,但在TrxR的共价修饰下,会产生显著的荧光,这已被证实对Trx、GSH、Cys和DTT具有明显的选择性。