Molecular Mechanisms Driving mRNA Degradation by m6A Modification

  • Yujin Lee
  • , Junho Choe
  • , Ok Hyun Park
  • , Yoon Ki Kim*
  • *Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    Abstract

    N6-Methyladenosine (m6A), the most prevalent internal modification associated with eukaryotic mRNAs, influences many steps of mRNA metabolism, including splicing, export, and translation, as well as stability. Recent studies have revealed that m6A-containing mRNAs undergo one of two distinct pathways of rapid degradation: deadenylation via the YT521-B homology (YTH) domain-containing family protein 2 (YTHDF2; an m6A reader protein)–CCR4/NOT (deadenylase) complex or endoribonucleolytic cleavage by the YTHDF2–HRSP12–ribonuclease (RNase) P/mitochondrial RNA-processing (MRP) (endoribonuclease) complex. Some m6A-containing circular RNAs (circRNAs) are also subject to endoribonucleolytic cleavage by YTHDF2–HRSP12–RNase P/MRP. Here, we highlight recent progress on the molecular mechanisms underlying rapid mRNA degradation via m6A and describe our current understanding of the dynamic regulation of m6A-mediated mRNA decay through the crosstalk between m6A (or YTHDF2) and other cellular factors.

    Original languageEnglish
    Pages (from-to)177-188
    Number of pages12
    JournalTrends in Genetics
    Volume36
    Issue number3
    DOIs
    Publication statusPublished - 2020 Mar

    Bibliographical note

    Publisher Copyright:
    © 2019 The Authors

    Keywords

    • HRSP12
    • RNase P/MRP
    • YTHDF2
    • circular RNA
    • endoribonucleolytic cleavage
    • mA modification

    ASJC Scopus subject areas

    • Genetics

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