A Native-Chemical-Ligation-Based Turn-on Fluorescent Probe for Selective Detection of Cysteine
作者:Masaki Shimizu、Hiroki Fukui、Ryosuke Shigitani
DOI:10.1002/jccs.201500466
日期:2016.4
Selective and quantitative detection of biological thiols such as cysteine, homocysteine, and glutathione is often necessary because abnormal levels of such thiols can cause some diseases. Here, we report that bis(pentafluorophenyl) 1,4‐benzenedicarbothionic acid diester can serve as a turn‐on fluorescent probe for selective detection of cysteine vis‐a‐vis homocysteine and glutathione. When cysteine
经常需要对半胱氨酸,高半胱氨酸和谷胱甘肽等生物硫醇进行选择性和定量检测,因为此类硫醇的含量异常会引起某些疾病。在这里,我们报道了双(五氟苯基)1,4-苯二碳二羧酸二酯可以用作荧光探针,用于选择性检测半胱氨酸和高半胱氨酸和谷胱甘肽。当将半胱氨酸添加到二酯和磷酸钠缓冲溶液与无荧光的THF(60 vol%)的混合物中时,该混合物变为绿色荧光。相反,加入高半胱氨酸或谷胱甘肽不会使混合物发荧光。提出了一种基于天然化学连接的机制。