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D
TT具有明显的选择性。