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Related Concept Videos

Immunofluorescence Microscopy01:12

Immunofluorescence Microscopy

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A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
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  1. Home
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  5. Biomedical And Clinical Sciences
  7. Medical Microbiology
  9. Medical Infection Agents (incl. Prions)
  11. M6a-refii: An Antibody-independent Tool For In Situ Visualizing Cellular Specific Rna M6a Compatible With Protein Immunofluorescence Staining

m6A-REFII: an antibody-independent tool for in situ visualizing cellular specific RNA m6A compatible with protein immunofluorescence staining

Yujie Mi1, Chenyang Huang1, Donghong Liu1

  • 1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, China.

Science China. Life Sciences
|June 14, 2025

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A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues
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Detection of Axonally Localized mRNAs in Brain Sections Using High-Resolution In Situ Hybridization
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View abstract on PubMed

Summary
This summary is machine-generated.

Scientists developed m6A-REFII, a novel tool for visualizing single N6-methyladenosine (m6A) modifications on specific RNAs within cells. This advancement allows for spatial characterization of m6A dynamics and interactions in real-time.

Area of Science:

  • Molecular Biology
  • Epigenetics
  • Cell Biology

Background:

  • N6-methyladenosine (m6A) is a prevalent RNA modification regulating cellular processes.
  • Current methods lack spatial resolution for m6A visualization within cells.
  • Understanding m6A spatial dynamics is crucial for deciphering its functions.

Purpose of the Study:

  • To develop a non-antibody-based fluorescent imaging tool for in situ visualization of single m6A sites on specific RNAs.
  • To enable spatial characterization of m6A modifications and their interactions within living cells.
  • To provide a tool for studying m6A dynamics under various cellular conditions.

Main Methods:

  • Development of m6A REading and Fluorescent Imaging In situ (m6A-REFII) tool.
Keywords:
fluorescent in situ m6A imagingm6A-RNA and protein co-imagingm6A-RNA subcellular localizationsingle m6A site visualization

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  • m6A-REFII integrates m6A reader, hybridization probe, and fluorescent signaling modules.
  • Application of m6A-REFII for visualizing m6A sites, dynamic changes, and protein-RNA interactions.

    • Main Results:

    • Successfully visualized m6A-modified RNAs at distinct subcellular locations using m6A-REFII.
    • Demonstrated dynamic changes in m6A sites in response to CRISPR-mediated reduction and heat shock.
    • Validated m6A-REFII compatibility with protein immunofluorescence, revealing scaffold attachment factor B binding to m6A-modified L1 RNA.

    Conclusions:

    • m6A-REFII is a novel tool for single-cell, single-m6A site visualization on specific RNAs.
    • The tool facilitates in situ spatial characterization of m6A modifications and their biological relevance.
    • m6A-REFII advances the study of m6A biology in complex cellular environments.
    spatial m6A information