Abstract:
:N6-methyladenosine (m6A), the most abundant internal mRNA modification, and N6,2'-O-dimethyladenosine (m6Am), found at the first-transcribed nucleotide, are two reversible epitranscriptomic marks. However, the profiles and distribution patterns of m6A and m6Am across human and mouse tissues are poorly characterized. Here, we report the m6A and m6Am methylome through profiling of 43 human and 16 mouse tissues and demonstrate strongest tissue specificity for the brain tissues. A small subset of tissue-specific m6A peaks can also readily classify tissue types. The overall m6A and m6Am level is partially correlated with the expression level of their writers and erasers. Additionally, the m6A-containing regions are enriched for SNPs. Furthermore, cross-species analysis revealed that species rather than tissue type is the primary determinant of methylation. Collectively, our study provides an in-depth resource for dissecting the landscape and regulation of the m6A and m6Am epitranscriptomic marks across mammalian tissues.
journal_name
Mol Celljournal_title
Molecular cellauthors
Liu J,Li K,Cai J,Zhang M,Zhang X,Xiong X,Meng H,Xu X,Huang Z,Peng J,Fan J,Yi Cdoi
10.1016/j.molcel.2019.09.032subject
Has Abstractpub_date
2020-01-16 00:00:00pages
426-440.e6issue
2eissn
1097-2765issn
1097-4164pii
S1097-2765(19)30758-0journal_volume
77pub_type
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