Investigation of the Relationship Between H<sub>2</sub>O<sub>2</sub> and HClO in Living Cells by a Bifunctional, Dual-ratiometric Responsive Fluorescent Probe
作者:Jinliang Han、Xingjiang Liu、Haiqing Xiong、Jingpei Wang、Benhua Wang、Xiangzhi Song、Wei Wang
DOI:10.1021/acs.analchem.9b05604
日期:2020.4.7
hypochlorous acid (HClO) play vital roles in many physiological and pathological processes. However, the relationship between these two species is seldomly investigated, in part, because of the lack of robust molecular tools which can simultaneously visualize HClO and H2O2 in biosystems. In this work, we present a design strategy to construct a single fluorescent probe that can detect H2O2 and HClO by simultaneously
作为两种重要的活性氧(ROS),过氧化氢(H2O2)和次氯酸(HClO)在许多生理和病理过程中起着至关重要的作用。但是,很少研究这两个物种之间的关系,部分原因是缺乏能够同时可视化生物系统中HClO和H2O2的强大分子工具。在这项工作中,我们提出了一种设计策略,以构建可以通过同时监视两个不同的检测通道来检测H2O2和HClO的单个荧光探针。在设计中,一种基于吩噻嗪的香豆素用作HClO的发色团和传感器,而另一种含硼酸酯的香豆素前体用作H2O2的传感器。在面对面筛选了香豆素前体部分不同的三个候选物后,发现探针CSU1具有最佳特性。如实验所示,它能够选择性,灵敏地检测到它们,从而在活细胞中产生不同的荧光信号和模式。此外,探针可以清楚地监控活细胞中H2O2和Cl-催化HPO产生内源性HClO的过程。这些研究证明了该探针作为研究HClO和H2O2在氧化应激中相互作用的有力工具的潜力。