Two coumarin-based turn-on fluorescent probes based on for hypochlorous acid detection and imaging in living cells
作者:Qingming Wang、Lei Jin、Wenling Wang、Lihui Dai、Xiaoxue Tan、Cong Zhao
DOI:10.1016/j.saa.2018.12.019
日期:2019.3
and the fluorescence intensity were increased considerably. Fluorescence titration experiments showed that the detection limit ACO & CETC is as low as 22 nm and 51 nm respectively. In particular, some relevant reactive species, including OH, 1O2, H2O2, KO2, some anions and cations cannot be interference with the test. In live cell experiments, ACO & CETC were successfully applied to image exogenous
这项工作,两个打开荧光探针(3-乙酰基2H-铬-2-酮(ACO)和(1E)-1-(1-(2-氧代-2H-铬-3-基)亚乙基)硫代氨基脲(CETC基于香豆素))已经被设计和合成,这可能选择性地和敏感地认识CLO -具有快速响应时间。ACO和CETC几乎不发荧光,这可能是由于香豆素的内酯形式和未桥连的C N键所致,它们在激发态下会经历非辐射衰变过程。当加入CLO的- ,ACO&CETC被氧化为环-通过劈开的C打开O,C的氮和荧光强度显着增加。荧光滴定实验表明,检出限ACO和CETC分别低至22 nm和51 nm。特别是一些相关的反应性物质,包括OH,1 O 2,H 2 O 2,KO 2,一些阴离子和阳离子不会干扰测试。在活细胞实验中,ACO与CETC成功地应用到图像外源性CLO -在HepG2细胞。因此,ACO和CETC不仅可以对ClO进行成像-在活细胞中,但也证明是c O,C的N可以通过CLO是裂解-