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Related Concept Videos

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A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues
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m6A-SAC-seq for quantitative whole transcriptome m6A profiling.

Ruiqi Ge1,2,3, Chang Ye1,2,3, Yong Peng1,2,3,4,5

  • 1Department of Chemistry, The University of Chicago, Chicago, IL, USA.

Nature Protocols
|November 26, 2022
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Summary
This summary is machine-generated.

This study introduces a new method for precise, quantitative sequencing of N⁶-methyladenosine (m⁶A) modifications across the entire transcriptome. This technique offers high reproducibility and broad sample compatibility for advancing m⁶A biology research.

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Area of Science:

  • Molecular Biology
  • Epigenetics
  • Genomics

Background:

  • N⁶-methyladenosine (m⁶A) is the most prevalent mRNA modification in mammals.
  • m⁶A plays a crucial role in regulating diverse physiological processes.
  • Accurate profiling of m⁶A is essential for understanding its biological functions.

Purpose of the Study:

  • To develop a novel, base-resolution, quantitative sequencing method for whole-transcriptome m⁶A profiling.
  • To provide a reproducible and versatile protocol applicable to various biological samples.
  • To enable deeper insights into m⁶A regulatory mechanisms.

Main Methods:

  • Utilized recombinant protein expression and organic synthesis for key reagents.
  • Employed a ligation-based library preparation strategy for m⁶A labeling.
  • Included detailed data analysis guidelines for comprehensive results.

Main Results:

  • Successfully identified 31,233–129,263 m⁶A sites from as little as 2 ng of poly A⁺ RNA.
  • Achieved high reproducibility and >65% coverage of peaks compared to antibody-based methods.
  • Demonstrated applicability to fresh, frozen, and FFPE tissue samples.

Conclusions:

  • The developed method offers a robust, quantitative approach for m⁶A sequencing.
  • This technique expands the scope of m⁶A research to diverse sample types.
  • Provides a valuable tool for uncovering new insights into m⁶A biology and its regulatory roles.