Comprehensive analysis of mRNA methylation reveals enrichment in 3' UTRs and near stop codons.
Comprehensive analysis of mRNA methylation reveals enrichment in 3' UTRs and near stop codons.
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DOI:
10.1016/j.cell.2012.05.003
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发表时间:
2012-06-22
期刊:
影响因子:
64.5
通讯作者:
Jaffrey SR
中科院分区:
文献类型:
--
作者:
Meyer KD;Saletore Y;Zumbo P;Elemento O;Mason CE;Jaffrey SR
Methylation of the N6 position of adenosine (m6A) is a post-transcriptional modification of RNA whose prevalence and physiological relevance is poorly understood. The recent discovery that FTO, an obesity risk gene, encodes an m6A demethylase implicates m6A as an important regulator of physiological processes. Here we present a method for transcriptome-wide m6A localization, which combines m6A-specific methylated RNA immunoprecipitation with next-generation sequencing (MeRIP-Seq). We use this method to identify mRNAs of 7,676 mammalian genes that contain m6A, indicating that m6A is a common base modification of mRNA. The m6A modification exhibits tissue-specific regulation and is markedly increased throughout brain development. We find that m6A sites are enriched near stop codons and in 3' UTRs, and we uncover an association between m6A residues and microRNA binding sites within 3' UTRs. These findings provide a resource for identifying transcripts that are substrates for adenosine methylation and reveal insights into the epigenetic regulation of the mammalian transcriptome.
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