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现在位置:首页 > 科研进展 > 最新重要论文(影响因子PNAS及以上)
Quantum Dot Nanobeacons for Single RNA Labeling and Imaging,J Am Chem Soc, 24 Jul 2019
2019-07-24 | 【     】【打印】【关闭

Journal of the American Chemical Society24 July, 2019,DOI:https://doi.org/10.1021/jacs.9b04659

Quantum Dot Nanobeacons for Single RNA Labeling and Imaging

Yingxin Ma, Guobin Mao, Weiren Huang, Guoqiang Wu, Wen Yin, Xinghu Ji, Zishi Deng, Zhiming Cai, Xian-En Zhang, Zhike He* and Zongqiang Cui*

Abstract

Detection and imaging RNAs in live cells is in high demand. Methodology for such a purpose is still a challenge, particularly for single RNA detection and imaging in live cells. In this study, a type of quantum dot (QD) nanobeacon with controllable valencies was constructed by precisely conjugating the black hole quencher (BHQ1) and phosphorothioate comodified DNA onto CdTe:Zn2+ QDs via a one-pot hydrothermal method. The nanobeacon with only one conjugated DNA was used to label and detect low-abundance nucleic acids in live cells, and single HIV-1 RNAs were detected and imaged in live HIV-1 integrated cells. Additionally, QD nanobeacon-labeled HIV-1 genomic RNAs were encapsulated in progeny viral particles, which can be used to track the uncoating process of single viruses. The current study provides a platform for nucleic acid labeling and imaging with high sensitivity, being especially meaningful for tracking of individual RNAs in live cells.

文章链接:https://pubs.acs.org/doi/10.1021/jacs.9b04659

 

 

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