Telomere G-triplex lights up Thioflavin T for RNA detection: new wine in an old bottle.
Telomere G-triplex lights up Thioflavin T for RNA detection: new wine in an old bottle.
复制标题
端粒 G-三链体点亮硫磺素 T 用于 RNA 检测:旧瓶装新酒
DOI:
10.1007/s00216-022-04180-7
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发表时间:
2022-08
影响因子:
4.3
通讯作者:
Liu, Maili
中科院分区:
文献类型:
--
作者:
Qin, Shanshan;Chen, Xuliang;Xu, Zhichen;Li, Tao;Zhao, Shuhong;Hu, Rui;Zhu, Jiang;Li, Ying;Yang, Yunhuang;Liu, Maili
Few reports are found working on the features and functions of the human telomere G-triplex (ht-G3) though the telomere G-quadruplex has been intensely studied and widely implemented to develop various biosensors. We herein report that ht-G3 lights up Thioflavin T (ThT) and establish a sensitive biosensing platform for RNA detection by introducing a target recycling strategy. An optimal condition was selected out for ht-G3 to promote ThT to generate a strong fluorescence. Accordingly, an ht-G3-based molecular beacon was successfully designed against the corresponding RNA sequence of the SARS-CoV-2 N-gene. The sensitivity for the non-amplified RNA target achieves 0.01 nM, improved 100 times over the conventional ThT–based method. We believe this ht-G3/ThT–based label-free strategy could be widely applied for RNA detection. The online version contains supplementary material available at 10.1007/s00216-022-04180-7.
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