Volume 135, Issue 7 e202209813
Kurzaufsatz

Single mRNA Imaging with Fluorogenic RNA Aptamers and Small-molecule Fluorophores

Wei Chen

Wei Chen

Institute of Cytology and Genetics, the Hengyang Key Laboratory of Cellular Stress Biology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001 China

Beijing Institutes of Life Science, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Science, Beijing, 100101 China

These authors contributed equally to this work

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Prof. Dr. Xiaoying Zhao

Prof. Dr. Xiaoying Zhao

College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing, 100048 China

These authors contributed equally to this work

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Prof. Dr. Nanyang Yang

Corresponding Author

Prof. Dr. Nanyang Yang

Institute of Cytology and Genetics, the Hengyang Key Laboratory of Cellular Stress Biology, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001 China

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Prof. Dr. Xing Li

Corresponding Author

Prof. Dr. Xing Li

Beijing Institutes of Life Science, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Science, Beijing, 100101 China

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First published: 24 November 2022
Citations: 3

Abstract

Messenger RNA (mRNA) is the fundamental information transfer system in the cell. Tracking single mRNA from transcription to degradation with fluorescent probes provides spatiotemporal information in cells about how the genetic information is transferred from DNA to proteins. The traditional single mRNA imaging approach utilizes RNA hairpins (e.g. MS2) and tethered fluorescent protein as probes. As an exciting alternative, RNA aptamers: small-molecule fluorophores (SFs) systems have emerged as novel single mRNA imaging probes since 2019, exhibiting several advantages including fluorogenic ability and minimal perturbation. This review summarizes all five reported RNA aptamers: SFs systems for single mRNA imaging in living cells so far. It also discusses the challenges and provides prospects for single mRNA imaging applications. This review is expected to inspire researchers to develop RNA aptamers: SFs systems for studying gene expression at single-molecule resolution in cells.

Conflict of interest

The authors declare no conflict of interest.

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