Two-Photon Fluorescent Probes of Biological Zn(II) Derived from 7-Hydroxyquinoline
作者:Xiao-Yun Chen、Jing Shi、Yi-Ming Li、Feng-Liang Wang、Xu Wu、Qing-Xiang Guo、Lei Liu
DOI:10.1021/ol901787w
日期:2009.10.1
A newfluorescentprobe for monitoring Zn2+ was synthesized based on the structure of 7-hydroxyquinoline. Compared with 8-substituted quinolines, the newprobe exhibited higher selectivity for Zn2+ over Cd2+. Its fluorescence enhancement (14-fold) and nanomolar range sensitivity (Kd = 0.117 nM) were favorable toward biological applications. Experiments also showed that a cell-permeable derivative of
基于7-羟基喹啉的结构,合成了一种用于监测Zn 2+的新型荧光探针。与8取代的喹啉相比,新探针对Zn 2+的选择性高于对Cd 2+的选择性。其荧光增强(14倍)和纳摩尔范围灵敏度(K d = 0.117 nM)有利于生物学应用。实验还表明,这种新探针的细胞可渗透衍生物可用于活细胞中的双光子成像。