Full-Range Intracellular pH Sensing by an Aggregation-Induced Emission-Active Two-Channel Ratiometric Fluorogen

被引：399

作者：

Chen, Sijie ^{[1
,2
]}

Hong, Yuning ^{[1
,2
]}

Liu, Yang ^{[1
,2
]}

Liu, Jianzhao ^{[1
,2
]}

Leung, Chris W. T. ^{[1
,2
]}

Li, Min ^{[1
,2
]}

Kwok, Ryan T. K. ^{[1
,2
]}

Zhao, Engui ^{[1
,2
]}

Lam, Jacky W. Y. ^{[1
,2
]}

Yu, Yong ^{[1
,2
]}

Tang, Ben Zhong ^{[1
,2
,3
,4
]}

机构：

[1] Hong Kong Univ Sci & Technol, Div Biomed Engn, Dept Chem, Inst Adv Study, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Inst Mol Funct Mat, Kowloon, Hong Kong, Peoples R China

[3] S China Univ Technol, Guangdong Innovat Res Team, SCUT HKUST Joint Res Lab, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[4] HKUST Shenzhen Res Inst, Shenzhen 518057, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2013年 / 135卷 / 13期

关键词：

LIVING CELLS; FLUORESCENT-PROBES; STIMULI; DESIGN;

D O I：

10.1021/ja400337p

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Intracellular pH (pH(i)) is an important parameter associated with cellular behaviors and pathological conditions. Sensing pH(i) and monitoring its changes in live cells are essential but challenging due to the lack of effective probes. We herein report a pH-sensitive fluorogen for pH(i) sensing and tracking. The dye is a tetraphenylethene-cyanine adduct (TPE-Cy). It is biocompatible and cell-permeable. Upon diffusing into cells, it responds sensitively to pH(i) in the entire physiological range, visualizing the acidic and basic compartments with intense red and blue emissions, respectively. The ratiometric signal of the red and blue channels can thus serve as an indicator for local proton concentration. The utility of TPE-Cy in pH(i) imaging and monitoring is demonstrated with the use of confocal microscopy, ratiometric analysis, and flow cytometry.

引用

页码：4926 / 4929

页数：4

共 25 条

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