Dual-quenching NBD-based fluorescent probes for separate detection of H<sub>2</sub>S and Cys/Hcy in living cells
作者:Yaqing Jiang、Xiuru Ji、Changyu Zhang、Zhen Xi、Lu Sun、Long Yi
DOI:10.1039/c9ob01535c
日期:——
dual-quenching fluorescent probes based on thiolysis of NBD (7-nitro-1,2,3-benzoxadiazole) thioether/ether/amine for separate detection of H2S and Cys/Hcy were rationally designed. Probe 2 was able to sense H2S (λex/em = 405/455 nm) and Cys/Hcy (λex/em = 470/550 nm) in the presence of GSH in aqueous buffer. Moreover, the probe not only could be applied for visualization of exogenous H2S and Cys in living
生物硫醇涉及不同的生理和病理过程,而生物硫醇的异常水平与多种疾病有关。区别检测这些分子并探索其在活生物样品中的固有转化是至关重要的。在此,合理设计了基于NBD(7-硝基-1,2,3-苯并恶二唑)硫醚/醚/胺硫解的双反应和双猝灭荧光探针,用于分别检测H 2 S和Cys / Hcy。探头2是能够感测ħ 2 S(λ EX / EM =455分之405纳米)和Cys /同型半胱氨酸(λ EX / EM =五百五十〇分之四百七十纳米)在GSH的在含水缓冲液的存在。而且,该探针不仅可以用于外源H 2的可视化。活细胞中的S和Cys,但也成功展示了验证Cys内生H 2 S生物合成的潜力。