Cited by 100Genetic Syndromes and ImprintingEpigenetics and DNA MethylationCancer-related molecular mechanisms research

Uncoupling antisense-mediated silencing and DNA methylation in the imprinted Gnas cluster

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Williamson, Christine M., Ball, Simon T., Dawson, Claire, Mehta, Stuti, Beechey, Colin V., Fray, Martin, Teboul, Lydia, Dear, T. Neil +2 more·2011·PLoS Genetics

Abstract

There is increasing evidence that non-coding macroRNAs are major elements for silencing imprinted genes, but their mechanism of action is poorly understood. Within the imprinted Gnas cluster on mouse chromosome 2, Nespas is a paternally expressed macroRNA that arises from an imprinting control region and runs antisense to Nesp, a paternally repressed protein coding transcript. Here we report a knock-in mouse allele that behaves as a Nespas hypomorph. The hypomorph mediates down-regulation of Nesp in cis through chromatin modification at the Nesp promoter but in the absence of somatic DNA methylation. Notably there is reduced demethylation of H3K4me3, sufficient for down-regulation of Nesp, but insufficient for DNA methylation; in addition, there is depletion of the H3K36me3 mark permissive for DNA methylation. We propose an order of events for the regulation of a somatic imprint on the wild-type allele whereby Nespas modulates demethylation of H3K4me3 resulting in repression of Nesp followed by DNA methylation. This study demonstrates that a non-coding antisense transcript or its transcription is associated with silencing an overlapping protein-coding gene by a mechanism independent of DNA methylation. These results have broad implications for understanding the hierarchy of events in epigenetic silencing by macroRNAs.

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Authors
Williamson, C. M., Ball, S. T., Dawson, C., Mehta, S., Beechey, C. V., Fray, M., Teboul, L., Dear, T. N., Kelsey, G., & Peters, J.
Affiliations
  • Medical Research Council (GB)
  • Babraham Institute (GB)
  • Mary Lyon Centre at MRC Harwell (GB)
Corresponding author
Peters, Jo
Venue
PLoS Genetics
Published
2011-03-24
Volume
7
Issue
3
Pages
e1001347
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2030487003
Cited by
100
References
49
Citations by year
2026: 2 · 2025: 3 · 2024: 1 · 2023: 4 · 2022: 4 · 2021: 10 · 2020: 3 · 2019: 6 · 2018: 4 · 2017: 4 · 2016: 9 · 2015: 9 · 2014: 5 · 2013: 15 · 2012: 13
FWCI
8.18
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • Directorate for Biological Sciences
  • Medical Research Council
  • Biotechnology and Biological Sciences Research Council
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Syndromes and Imprinting
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer-related molecular mechanisms research
Keywords
genomic imprinting, NESP, non-coding RNA, DNA methylation, H3K36me3, chromatin modification, epigenetic silencing, paternally expressed genes, imprinting control regions, cis-regulation
MeSH terms
Alleles, Animals, Chromogranins, Female, Gene Expression Regulation, Histones, Male, Mutation, RNA, Antisense, Gene Targeting, Genomic Imprinting, DNA Methylation, GTP-Binding Protein alpha Subunits, Gs, Gene Silencing, Gene Order, Animals, Genetically Modified, Mice

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