m(6)A-LAIC-seq reveals the census and complexity of the m(6)A epitranscriptome.
m(6)A-LAIC-seq reveals the census and complexity of the m(6)A epitranscriptome.
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DOI:
10.1038/nmeth.3898
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发表时间:
2016-08
期刊:
影响因子:
48
通讯作者:
Giallourakis CC
中科院分区:
文献类型:
--
作者:
Molinie B;Wang J;Lim KS;Hillebrand R;Lu ZX;Van Wittenberghe N;Howard BD;Daneshvar K;Mullen AC;Dedon P;Xing Y;Giallourakis CC
N6-Methyladenosine (m6A) is a widespread, reversible chemical modification of RNA molecules, implicated in many aspects of RNA metabolism. Little quantitative information exists as to either how many transcript copies of particular genes are m6A modified (‘m6A levels’) or the relationship of m6A modification(s) to alternative RNA isoforms. To deconvolute the m6A epitranscriptome, we developed m6A-level and isoform-characterization sequencing (m6A-LAIC-seq). We found that cells exhibit a broad range of nonstoichiometric m6A levels with cell-type specificity. At the level of isoform characterization, we discovered widespread differences in the use of tandem alternative polyadenylation (APA) sites by methylated and nonmethylated transcript isoforms of individual genes. Strikingly, there is a strong bias for methylated transcripts to be coupled with proximal APA sites, resulting in shortened 3′ untranslated regions, while nonmethylated transcript isoforms tend to use distal APA sites. m6A-LAIC-seq yields a new perspective on transcriptome complexity and links APA usage to m6A modifications.
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影响因子:
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作者:
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通讯作者:
Pan, Tao
影响因子:
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作者:
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通讯作者:
Darnell RB
影响因子:
5.3
作者:
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通讯作者:
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