Issue 24, 2017

A highly water-soluble, sensitive, coumarin-based fluorescent probe for detecting thiols, and its application in bioimaging

Abstract

In this study, a coumarin-based probe (probe 1) bearing a maleimide group was used to rapidly and selectively detect thiols. After inducing thiols, this probe presented a significant fluorescence enhancement (≥22-fold), whereas other amino acids that had no sulfhydryl group just generated slight changes. The detection limits were determined to be as low as 7.41 nM for Cys, 6.06 nM for GSH, and 7.73 nM for Hcy based on S/N = 3. Furthermore, this probe possessed excellent water solubility and successfully detected thiols in PBS (pH 7.4, 99.5%). More importantly, the practical application of probe 1 for the selective detection of thiols was successfully demonstrated in living T24 cells.

Graphical abstract: A highly water-soluble, sensitive, coumarin-based fluorescent probe for detecting thiols, and its application in bioimaging

Supplementary files

Article information

Article type
Paper
Submitted
03 Jul 2017
Accepted
03 Nov 2017
First published
03 Nov 2017

New J. Chem., 2017,41, 15277-15282

A highly water-soluble, sensitive, coumarin-based fluorescent probe for detecting thiols, and its application in bioimaging

L. Guo, D. Yang, L. Xia, F. Qu, Y. Dou, F. Qu, R. Kong and J. You, New J. Chem., 2017, 41, 15277 DOI: 10.1039/C7NJ02391J

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