LTR retrotransposons transcribed in oocytes drive species-specific and heritable changes in DNA methylation

Julie Brind’Amour, Hisato Kobayashi, Julien Richard Albert, Kenjiro Shirane, Akihiko Sakashita, Asuka Kamio, Aaron Bogutz, Tasuku Koike, Mohammad M. Karimi, Louis Lefebvre, Tomohiro Kono, Matthew C. Lorincz

研究成果: Article査読

37 被引用数 (Scopus)

抄録

De novo DNA methylation (DNAme) during mouse oogenesis occurs within transcribed regions enriched for H3K36me3. As many oocyte transcripts originate in long terminal repeats (LTRs), which are heterogeneous even between closely related mammals, we examined whether species-specific LTR-initiated transcription units (LITs) shape the oocyte methylome. Here we identify thousands of syntenic regions in mouse, rat, and human that show divergent DNAme associated with private LITs, many of which initiate in lineage-specific LTR retrotransposons. Furthermore, CpG island (CGI) promoters methylated in mouse and/or rat, but not human oocytes, are embedded within rodent-specific LITs and vice versa. Notably, at a subset of such CGI promoters, DNAme persists on the maternal genome in fertilized and parthenogenetic mouse blastocysts or in human placenta, indicative of species-specific epigenetic inheritance. Polymorphic LITs are also responsible for disparate DNAme at promoter CGIs in distantly related mouse strains, revealing that LITs also promote intra-species divergence in CGI DNAme.

本文言語English
論文番号3331
ジャーナルNature communications
9
1
DOI
出版ステータスPublished - 2018 12月 1
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 生化学、遺伝学、分子生物学(全般)
  • 物理学および天文学(全般)

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