Real-time monitoring of endogenous cysteine levels in living cells using a CD-based ratiometric fluorescent nanoprobe
Real-time monitoring of endogenous cysteine levels in living cells using a CD-based ratiometric fluorescent nanoprobe
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使用基于 CD 的比率荧光纳米探针实时监测活细胞中的内源半胱氨酸水平
DOI:
10.1007/s00216-018-1091-x
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发表时间:
2018-04
影响因子:
4.3
通讯作者:
Chen Jian
中科院分区:
文献类型:
--
作者:
Wang Hong;Zhang Peisheng;Tian Yong;Zhang Yuan;Yang Heping;Chen Shu;Zeng Rongjin;Long Yunfei;Chen Jian
A simple and readily available fluorescent probe is needed for the real-time monitoring of endogenous cysteine (Cys) levels in living cells, as such a probe could be used to study the role of Cys in related diseases. Herein, we report the first fluorescent probe based on carbon dots (CDs-FITA) for the selective and ratiometric imaging of endogenous Cys in live cells. In this ratiometric fluorescent probe, a fluorescein derivative (FITA) that recognizes Cys is covalently linked to the surfaces of carbon dots (CDs); employing CDs greatly improves the water solubility of the probe. Acrylate on FITA is selectively cleaved by Cys in aqueous solution under mild conditions, leading to a dramatic increase in the fluorescence from fluorescein. The probe therefore allows the highly selective ratiometric fluorescent detection of Cys even in the presence of various interferents. The as-prepared CDs-FITA showed excellent performance when applied to detect Cys in blood serum. In addition, due to its negligible cytotoxicity, the CDs-FITA can also be utilized for the real-time monitoring of endogenous cysteine (Cys) levels in living cells.Graphical abstractIllustration of the CD-based probe for Cys imaging in living cells
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影响因子:
16.6
作者:
Chen, Wei;Pacheco, Armando;Takano, Yoko;Day, Jacob J.;Hanaoka, Kenjiro;Xian, Ming
通讯作者:
Xian, Ming
影响因子:
4.3
作者:
Huili Fu;Zhongyin Ji;Xuejie Chen;Anwei Cheng;Shucheng Liu;Peiwei Gong;Guoliang Li;Guang Chen;Zhiwei Sun;Xianen Zhao;Feng Cheng;Jinmao You
通讯作者:
Jinmao You
DOI:
10.1002/anie.201710688
发表时间:
2017-12-22
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Chen W;Xu S;Day JJ;Wang D;Xian M
通讯作者:
Xian M
影响因子:
46.2
作者:
Lin VS;Chen W;Xian M;Chang CJ
通讯作者:
Chang CJ
影响因子:
4.6
作者:
Wang Y;Zhu M;Jiang E;Hua R;Na R;Li QX
通讯作者:
Li QX