Cited by 556Genetic Syndromes and ImprintingGenomics and Chromatin DynamicsEpigenetics and DNA Methylation

Interaction between differentially methylated regions partitions the imprinted genes Igf2 and H19 into parent-specific chromatin loops

Murrell, Adele, Heeson, Sarah, Reik, Wolf·2004·Nature Genetics

Abstract

Imprinted genes are expressed from only one of the parental alleles and are marked epigenetically by DNA methylation and histone modifications. The paternally expressed gene insulin-like growth-factor 2 (Igf2) is separated by approximately 100 kb from the maternally expressed noncoding gene H19 on mouse distal chromosome 7. Differentially methylated regions in Igf2 and H19 contain chromatin boundaries, silencers and activators and regulate the reciprocal expression of the two genes in a methylation-sensitive manner by allowing them exclusive access to a shared set of enhancers. Various chromatin models have been proposed that separate Igf2 and H19 into active and silent domains. Here we used a GAL4 knock-in approach as well as the chromosome conformation capture technique to show that the differentially methylated regions in the imprinted genes Igf2 and H19 interact in mice. These interactions are epigenetically regulated and partition maternal and paternal chromatin into distinct loops. This generates a simple epigenetic switch for Igf2 through which it moves between an active and a silent chromatin domain.

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Crossref · 10.1038/ng1402

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  • An insulated neighborhood on the maternal allele allows an enhancer-promoter interaction that activates the H19 gene but not the IGF2 gene, which is excluded from the neighborhood.

    “An insulated neighborhood on the maternal allele allows an enhancer-promoter interaction that activates the H19 gene but not the IGF2 gene, which is excluded from the neighborhood.”

    From Insulated Neighborhoods: Structural and Functional Units of Mammalian Gene Control (2016) · cites this paper as Murrell et al., 2004

  • Parent-of-origin specific gene activity at the imprinted IGF2/H19 locus is controlled by allele-specific CTCF-CTCF interactions that constrain enhancer-gene contacts in a DNA methylation-dependent manner.

    “Parent-of-origin specific gene activity at the imprinted IGF2/H19 locus is controlled by allele-specific CTCF-CTCF interactions that constrain enhancer-gene contacts in a DNA methylation-dependent manner (Figure 6A) (Kurukuti et al., 2006; Murrell et al., 2004).”

    From Insulated Neighborhoods: Structural and Functional Units of Mammalian Gene Control (2016) · cites this paper as Murrell et al., 2004

  • A larger insulated neighborhood is formed on the paternal allele to allow an enhancer-promoter interaction that activates the IGF2 gene.

    “A larger insulated neighborhood is formed on the paternal allele to allow an enhancer-promoter interaction that activates the IGF2 gene.”

    From Insulated Neighborhoods: Structural and Functional Units of Mammalian Gene Control (2016) · cites this paper as Murrell et al., 2004

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Authors
Murrell, A., Heeson, S., & Reik, W.
Affiliations
Babraham Institute (GB)
Corresponding author
  • Murrell, Adele
  • Reik, Wolf
Venue
Nature Genetics
Published
2004-07-25
Volume
36
Issue
8
Pages
889-893
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2085509761
Cited by
556
References
30
Citations by year
2026: 7 · 2025: 4 · 2024: 13 · 2023: 5 · 2022: 8 · 2021: 8 · 2020: 10 · 2019: 13 · 2018: 16 · 2017: 15 · 2016: 18 · 2015: 26 · 2014: 27 · 2013: 30 · 2012: 50
FWCI
22.42
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Genetics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Syndromes and Imprinting
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Epigenetics and DNA Methylation
Keywords
genomic imprinting, insulin-like growth factor II, H19, differentially methylated regions, chromatin looping, DNA methylation, epigenetic regulation, chromosome conformation, epigenetic switch, mouse chromosome 7, gene silencing
MeSH terms
Animals, Chromatin, Insulin-Like Growth Factor II, Mice, Transgenic, Molecular Sequence Data, Genomic Imprinting, DNA Methylation, RNA, Untranslated, Mice, RNA, Long Noncoding

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