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A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues
Published on: December 5, 2016
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Limits in the detection of m6A changes using MeRIP/m6A-seq.
Alexa B R McIntyre1,2, Nandan S Gokhale3, Leandro Cerchietti4
1Department of Physiology and Biophysics, Weill Cornell Medicine, New York City, NY, 10065, USA. abm237@cornell.edu.
Scientific Reports
|April 22, 2020
Summary
Methylation sequencing (MeRIP-seq) shows limited reproducibility for detecting m6A RNA modifications and changes between conditions. New analysis methods are needed to improve accuracy and reliability in m6A research.
Area of Science:
- Molecular Biology
- Epigenetics
- RNA Biology
Background:
- N6-methyladenosine (m6A) is a prevalent mRNA modification.
- Stimuli can alter m6A levels, but mapping these changes is challenging.
Purpose of the Study:
- To assess the reproducibility of methylated RNA immunoprecipitation sequencing (MeRIP-seq).
- To evaluate statistical methods for detecting m6A changes.
- To propose improved analysis approaches for m6A peak changes.
Main Methods:
- Reanalysis of published MeRIP-seq data with replicate controls.
- Assessment of statistical methods for m6A peak change detection.
Main Results:
- MeRIP-seq shows variable m6A peak overlap (30-60%) between studies, even in the same cell type.
- Few m6A changes were detected across studies, and consistent changes under similar stimuli were not observed.
- Reproducibility limits exist for both peak detection and change analysis in MeRIP-seq.
Conclusions:
- Current MeRIP-seq protocols and analysis methods have limitations in reproducibility.
- Improved approaches are necessary for reliable detection and analysis of m6A modifications and their dynamic changes.
