A hydrogen sulfide triggered self-immolative fluorescent probe for lysosome labeling in live cells
作者:Nithya Velusamy、Natesan Thirumalaivasan、Kondapa Naidu Bobba、Shu-Pao Wu、Sankarprasad Bhuniya
DOI:10.1039/c7nj04119e
日期:——
We developed a naphthalimide-based, lysosome-targeting, and self-immolative fluorescent probe for H2S detection. Probe LS-1 comprises a 2-formylbenzoate derivative of the 1,8-naphthalimide fluorophore. H2S forms a thiohemiacetal intermediate by reacting with the formyl group of the 2-formylbenzoate derivative, which subsequently undergoes intramolecular cyclization with the ester moiety to generate
我们开发了一种基于萘二甲酰亚胺的,针对溶酶体的,自消灭性的荧光探针,用于H 2 S检测。探针LS-1包含1,8-萘二甲酰亚胺荧光团的2-甲酰基苯甲酸酯衍生物。H 2 S通过与2-甲酰基苯甲酸酯衍生物的甲酰基反应形成硫代半缩醛中间体,随后其与酯部分进行分子内环化,生成游离的萘二甲酰亚胺荧光团(FL-1)。的紫外-可见吸光度(λ ABS)探针的值LS-1在450nm处的H的存在下增加2同样S.,随着ħ 2硫的浓度,发射带(λ EM中心在560 nm处的)逐渐增加。与其他生物分析物相比,该探针对H 2 S具有高度敏感性和化学选择性。探针LS-1在整个生理pH范围内均无毒且非常稳定。探针LS-1能够检测溶酶体中HT29细胞中细胞内源性H 2 S的形成。