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A sensitive ratiometric fluorescent probe for quantitive detection and imaging of alkaline phosphatase in living cells
被引:38
|作者:
Gao, Congcong
[1
]
Zang, Shunping
[1
]
Nie, Longxue
[1
]
Tian, Yong
[1
]
Zhang, Rubo
[1
]
Jing, Jing
[1
]
Zhang, Xiaoling
[1
]
机构:
[1] Beijing Inst Technol, Beijing Key Lab Photoelect Electrophoton Convers, Key Lab Cluster Sci, Sch Chem,Minist Educ, Beijing 100081, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Ratiometric;
Fluorescent probe;
Alkaline phosphatase;
SULFUR-DIOXIDE DERIVATIVES;
COLORIMETRIC ASSAY;
MECHANISM;
STRATEGY;
D O I:
10.1016/j.aca.2019.03.043
中图分类号:
O65 [分析化学];
学科分类号:
070302 ;
081704 ;
摘要:
We report a sensitive fluorescence probe Ratio-ALP for in vivo ratiometric imaging of alkaline phosphatase (ALP). The probe was designed by conjugating a naphthalimide with a phosphate group as the responsive moiety for enzymatic reactions. The fluorescence intensity ratio displayed a linear relationship against the concentration of ALP in the concentration range from 0 to 200 U/L, its LOD is as low as 0.25 U/L. Ratio-ALP has good selectivity and sensitivity, high cell permeability, and low cytotoxicity. Furthermore, probe Ratio-ALP was also successfully applied to image endogenous ALP activity in living cells. (C) 2019 Elsevier B.V. All rights reserved.
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页码:131 / 135
页数:5
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