Comparison of Reductive Ligation‐Based Detection Strategies for Nitroxyl (HNO) and
<i>S</i>
‐Nitrosothiols
作者:Zhengrui Miao、S. Bruce King
DOI:10.1002/open.201500200
日期:2016.4
carboxylic acid groups primarily yield phosphine oxides suggesting these groups facilitate nonligation pathways such as hydrolysis. The fluorescence response of a phosphine‐based fluorophore toward the same RSNO confirms these differences and indicates that these probes selectively react with HNO. Flow cytometry experiments in HeLa cells reinforce the reactivity difference and offer a potential fast screening
研究并比较了基于膦的硝酰基(HNO)和S-亚硝基硫醇(RSNO)的检测策略。磷NMR研究表明,衍生自HNO或有机RSNO的氮杂化物有效地参与了在适当取代的底物中产生荧光所需的后续还原连接。小号‐从含有游离胺和羧酸基团的生物RSNO衍生出的氮杂化物主要产生氧化膦,表明这些基团促进了非连接途径(例如水解)。基于膦的荧光团对同一个RSNO的荧光响应证实了这些差异,并表明这些探针与HNO选择性反应。HeLa细胞中的流式细胞术实验可增强反应性差异,并为内源性HNO来源提供潜在的快速筛选方法。