A Sensitive and Label-Free Pb(II) Fluorescence Sensor Based on a DNAzyme Controlled G-Quadruplex/Thioflavin T Conformation.
A Sensitive and Label-Free Pb(II) Fluorescence Sensor Based on a DNAzyme Controlled G-Quadruplex/Thioflavin T Conformation.
复制标题
基于 DNAzyme 控制的 G-四联体/硫黄素 T 构象的灵敏且无标记的 Pb(II) 荧光传感器
DOI:
10.3390/s16122155
复制
发表时间:
2016-12-16
期刊:
影响因子:
--
通讯作者:
Liu G
中科院分区:
文献类型:
--
作者:
Wen Y;Wang L;Li L;Xu L;Liu G
Pb(II) can cause serious damaging effects to human health, and thus, the study of Pb2+ detection methods to sensitively and selectively monitor Pb(II) pollution has significant importance. In this work, we have developed a label-free fluorescence sensing strategy based on a Pb(II) DNAzyme cleavage and the ThT/G-quadruplex complex. In the presence of Pb(II), a G-rich tail was cut and released from the substrate strand, which then would form a G-quadruplex structure by combination with ThT dye. The fluorescence signal increase was then measured for sensitive Pb(II) quantification with a limit of detection of 0.06 nM. Our sensor also demonstrated high selectivity against six different metal ions, which is very important for the analysis of complex samples.
登录
查看更多内容
影响因子:
6.1
作者:
Fu, Ting;Ren, Songlei;Tan, Weihong
通讯作者:
Tan, Weihong
影响因子:
62.1
作者:
Liu, Juewen;Cao, Zehui;Lu, Yi
通讯作者:
Lu, Yi
影响因子:
16.6
作者:
Hollenstein, Marcel;Hipolito, Christopher;Perrin, David M.
通讯作者:
Perrin, David M.
影响因子:
6.2
作者:
MA, RL;VANMOL, W;ADAMS, F
通讯作者:
ADAMS, F
影响因子:
4.9
作者:
Wen, Yanqin;Peng, Cheng;Fan, Chunhai
通讯作者:
Fan, Chunhai