Cited by 497RNA modifications and cancerRNA regulation and diseaseMicroRNA in disease regulation

METTL1 Promotes let-7 MicroRNA Processing via m7G Methylation

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Pandolfini, Luca, Barbieri, Isaia, Bannister, Andrew J., Hendrick, Alan, Andrews, Byron, Webster, Natalie, Murat, Pierre, Mach, Pia +7 more·2019·Molecular Cell

Abstract

7-methylguanosine (m7G) is present at mRNA caps and at defined internal positions within tRNAs and rRNAs. However, its detection within low-abundance mRNAs and microRNAs (miRNAs) has been hampered by a lack of sensitive detection strategies. Here, we adapt a chemical reactivity assay to detect internal m7G in miRNAs. Using this technique (Borohydride Reduction sequencing [BoRed-seq]) alongside RNA immunoprecipitation, we identify m7G within a subset of miRNAs that inhibit cell migration. We show that the METTL1 methyltransferase mediates m7G methylation within miRNAs and that this enzyme regulates cell migration via its catalytic activity. Using refined mass spectrometry methods, we map m7G to a single guanosine within the let-7e-5p miRNA. We show that METTL1-mediated methylation augments let-7 miRNA processing by disrupting an inhibitory secondary structure within the primary miRNA transcript (pri-miRNA). These results identify METTL1-dependent N7-methylation of guanosine as a new RNA modification pathway that regulates miRNA structure, biogenesis, and cell migration.

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Crossref · 10.1016/j.molcel.2019.03.040

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  • The ubiquitin-like domain within UHRF1 promotes ubiquitination of histone H3, which recruits DNMT1 to newly replicated chromatin to ensure the inheritance of DNA methylation.

    “Furthermore, the ubiquitin-like domain within the ligase promotes ubiquitination of histone H3, which recruits DNMT1 to newly replicated chromatin to ensure the inheritance of DNA methylation 42 .”

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Authors
Pandolfini, L., Barbieri, I., Bannister, A. J., Hendrick, A., Andrews, B., Webster, N., Murat, P., Mach, P., Brandi, R., Robson, S. C., Migliori, V., Alendar, A., d’Onofrio, M., Balasubramanian, S., & Kouzarides, T.
Affiliations
  • University of Cambridge (GB)
  • European Brain Research Institute (IT)
  • Istituto di Farmacologia Traslazionale (IT)
Corresponding author
Kouzarides, Tony
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2019-06
Volume
74
Issue
6
Pages
1278-1290.e9
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2941132662
Cited by
491
References
66
Citations by year
2026: 32 · 2025: 68 · 2024: 76 · 2023: 95 · 2022: 101 · 2021: 68 · 2020: 37 · 2019: 14
FWCI
18.36
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
  • Apollo (University of Cambridge) (submittedVersion, cc-by-nc-nd)
  • Apollo
Funders
  • European Research Council (268569)
  • Cancer Research UK (RG72100)
  • Horizon 2020 (732678)
  • Wellcome Trust (WT203144, C6946/A24843)
  • Kay Kendall Leukaemia Fund (337778, RG86786, RG88664)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA modifications and cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA regulation and disease
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
Keywords
METTL1, let-7 microRNA, 7-methylguanosine, RNA methylation, microRNA biogenesis, cell migration, RNA modification
MeSH terms
A549 Cells, Base Sequence, Biological Assay, Cell Movement, Guanosine, Humans, Methylation, Methyltransferases, Nucleic Acid Conformation, RNA Processing, Post-Transcriptional, Caco-2 Cells, MicroRNAs, Cell Proliferation, HEK293 Cells

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