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Imaging the dynamics of messenger RNA with a bright and stable green fluorescent RNA

nature chemical biology. 2024-05; 
Fangting Zuo, Li Jiang, Ni Su, Yaqiang Zhang, Bingkun Bao, Limei Wang, Yajie Shi, Huimin Yang, Xinyi Huang, Ruilong Li, Qingmei Zeng, Zhengda Chen, Qiuning Lin, Yingping Zhuang, Yuzheng Zhao, Xianjun Chen, Linyong Zhu & Yi Yang
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Single-Stranded DNA Synthesis A single-stranded (ssDNA) library encoding above RNA sequences was synthesized by Nanjing GenScript Biotech and amplified to obtain double-stranded DNA (dsDNA) templates for preparation of RNA library by in vitro transcription. Get A Quote

摘要

Fluorescent RNAs (FRs) provide an attractive approach to visualizing RNAs in live cells. Although the color palette of FRs has been greatly expanded recently, a green FR with high cellular brightness and photostability is still highly desired. Here we develop a fluorogenic RNA aptamer, termed Okra, that can bind and activate the fluorophore ligand ACE to emit bright green fluorescence. Okra has an order of magnitude enhanced cellular brightness than currently available green FRs, allowing the robust imaging of messenger RNA in both live bacterial and mammalian cells. We further demonstrate the usefulness of Okra for time-resolved measurements of ACTB mRNA trafficking to stress granules, as well as live-cell dua... More

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