Environment-insensitive two-photon ratiometric probe for in cellulo quantitative measurement of hydrogen peroxide
Results in chemistry(2021)
摘要
Abstract The quantitative analysis of a biological analyte directly through fluorescence imaging is essential in biomedical sciences but remains as a challenge owing to the environment-sensitive nature of fluorescence intensity. We show that a fluorescent hydrogen peroxide probe based on an in cellulo super-bright benzothiazolyl-benzocoumarin dye of which emission properties are insensitive to environmental changes offers a reliable and practical means for the quantitative analysis of hydrogen peroxide in cells and tissues directly through ratiometric imaging both under one-photon and two-photon excitation conditions. Different cellular hydrogen peroxide concentrations were determined for several cell lines and also for tumour and normal tissues.
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关键词
Ratiometric imaging,Quantitative analysis,Environment-insensitive probe,Hydrogen peroxide,Two-photon imaging
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