Highly Selective Fluorescent Probe for Imaging H2Se in Living Cells and in Vivo Based on the Disulfide Bond

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• 作者：Fanpeng Kong ; Yuehui Zhao ; Ziye Liang ; Xiaojun Liu ; Xiaohong Pan ; Dongrui Luan ; Kehua Xu ; Bo Tang
• 刊名：Analytical Chemistry
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：89
• 期：1
• 页码：688-693
• 全文大小：400K
• ISSN：1520-6882

文摘

Hydrogen selenide (H₂Se) is an important metabolite of dietary Se compounds and has been implicated in various pathological and physiological processes. The development of highly sensitive and selective methods for the sensing of H₂Se is therefore very important. Herein, we developed a fluorescent probe (hemicyanine (Hcy)-H₂Se) for detecting H₂Se based on a new H₂Se-specific receptor unit, 1,2-dithiane-4,5-diol. Hcy-H₂Se showed high selectivity toward H₂Se over thiols (RSH), hydrogen sulfide (H₂S), and selenocysteine (Sec) and was further exploited for the fluorescence imaging of H₂Se both in living cells and in vivo. Furthermore, with the aid of Hcy-H₂Se, we demonstrated that H₂Se can be generated and gradually accumulated in HepG2 cells under hypoxic conditions and in the solid tumor after treatment with Na₂SeO₃.