An ortho-activation strategy to develop NIR fluorescent probe for rapid imaging of biothiols in vivo

被引:5
|
作者
Yu, Lu [1 ]
Xie, Mingli [2 ]
Chen, Min [2 ]
Yang, Huiru [1 ]
Chen, Liang [2 ]
Xing, Panfei [2 ]
Tian, Zhiyong [1 ]
Wang, Chaojie [2 ]
机构
[1] Henan Univ, Sch Pharm, Kaifeng 475004, Peoples R China
[2] Henan Univ, Key Lab Nat Med & Immuno Engn, Kaifeng 475004, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Near-infrared (NIR) fluorescence imaging; Ortho-activation; Rapidly detecting; Biothiols; In vivo; CYSTEINE; GLUTATHIONE; DESIGN; THIOLS; SHIFT;
D O I
10.1016/j.talanta.2023.125110
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Biothiols are the main antioxidants in regulating the redox balance and resisting oxidative stress in various biological processes, but the long detection time of current fluorescent probes hinders their rapid imaging in vitro and in vivo. To reveal the influx of biothiols, we rationally develop an ortho-activation approach to accelerate the reaction between the probe and biothiols, by introducing electron-withdrawing fluorine atom into the ortho-site of the phenolic hydroxyl group in the NIR probe to generate an ortho-inductive effect. The ortho-fluorine helps to increase the chemical reactivity of the molecular structure, resulting in a significantly shorter detection time (within 5 min) as compared to previous reports (> 20 min for acrylates-based probes in aqueous solution). Based on this approach, our near-infrared probe 2F-RBX can sensitively and efficiently detect endogenous biothiols in living HepG2 cells and in vivo. These data suggest that ortho-activation is a simple and flexible approach to construct sensitive fluorescent probes for rapid imaging of biothiols, and perhaps other molecules in future, under biological circumstances.
引用
收藏
页数:7
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