A Ratiometric, Fast-Responsive, and Single-Wavelength Excited Fluorescent Probe for the Discrimination of Cys and Hcy
The ratiometric detection of cysteine (Cys) and homocysteine (Hcy) is very challenging because of their highly similar chemical structures and properties. By introducing the phenylethynyl group into a coumarin dye as the sensing group, the ratiometric fluorescent probe CP was developed to selectivel...
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| Veröffentlicht in: | Analytical chemistry (Washington) 2021-08, Vol.93 (31), p.10934-10939 |
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| container_title | Analytical chemistry (Washington) |
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| creator | Han, Shaohui Zhang, Hui Yue, Xiuxiu Wang, Jingpei Yang, Lei Wang, Benhua Song, Xiangzhi |
| description | The ratiometric detection of cysteine (Cys) and homocysteine (Hcy) is very challenging because of their highly similar chemical structures and properties. By introducing the phenylethynyl group into a coumarin dye as the sensing group, the ratiometric fluorescent probe CP was developed to selectively and rapidly discriminate between Cys and Hcy. With a single-wavelength excitation, the presence of Cys or Hcy induced the probe to produce distinct ratiometric fluorescence changes: from red (λmax em = 608 nm) to blue (λmax em = 485 nm) toward Cys and from red to mixed red/blue toward Hcy. Moreover, the probe was capable of visualizing and discriminating between intracellular Cys and Hcy in HeLa cells and zebrafish by exhibiting different ratiometric fluorescence signals. |
| doi_str_mv | 10.1021/acs.analchem.1c01750 |
| format | Article |
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By introducing the phenylethynyl group into a coumarin dye as the sensing group, the ratiometric fluorescent probe CP was developed to selectively and rapidly discriminate between Cys and Hcy. With a single-wavelength excitation, the presence of Cys or Hcy induced the probe to produce distinct ratiometric fluorescence changes: from red (λmax em = 608 nm) to blue (λmax em = 485 nm) toward Cys and from red to mixed red/blue toward Hcy. 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| source | American Chemical Society (ACS) Journals |
| subjects | Analytical chemistry Chemistry Coumarin Fluorescence Fluorescent indicators Homocysteine Wavelength Zebrafish |
| title | A Ratiometric, Fast-Responsive, and Single-Wavelength Excited Fluorescent Probe for the Discrimination of Cys and Hcy |
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