Evidence map›Paper›PMID 38840164›Full record

ArticleEpigenetics & chromatin2024

Imprinted DNA methylation of the H19 ICR is established and maintained in vivo in the absence of Kaiso.

Hitomi Matsuzaki, Minami Kimura, Mizuki Morihashi, Keiji Tanimoto

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Article in Epigenetics & chromatin, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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2citing papers in PubMed
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3 · Its place in the literature

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2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

4 authors.

Hitomi MatsuzakiInstitute of Life and Environmental Sciences, Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, 305-8577, Japan. matsuzaki@tara.tsukuba.ac.jp.
Minami KimuraGraduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Mizuki MorihashiGraduate School of Science and Technology, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Keiji TanimotoInstitute of Life and Environmental Sciences, Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki, 305-8577, Japan.

Funding

Japan Society for the Promotion of Science KAKENHI JP19KK0384Japan Society for the Promotion of Science KAKENHI JP20K21360Takeda Science Foundation Bioscience Research Grant
6 · The paper itself

Abstract

backgroundPaternal allele-specific DNA methylation of the imprinting control region (H19 ICR) controls genomic imprinting at the Igf2/H19 locus. We previously demonstrated that the mouse H19 ICR transgene acquires imprinted DNA methylation in preimplantation mouse embryos. This activity is also present in the endogenous H19 ICR and protects it from genome-wide reprogramming after fertilization. We also identified a 118-bp sequence within the H19 ICR that is responsible for post-fertilization imprinted methylation. Two mutations, one in the five RCTG motifs and the other a 36-bp deletion both in the 118-bp segment, caused complete and partial loss, respectively, of methylation following paternal transmission in each transgenic mouse. Interestingly, these mutations overlap with the binding site for the transcription factor Kaiso, which is reportedly involved in maintaining paternal methylation at the human H19 ICR (IC1) in cultured cells. In this study, we investigated if Kaiso regulates imprinted DNA methylation of the H19 ICR in vivo.

resultsNeither Kaiso deletion nor mutation of Kaiso binding sites in the 118-bp region affected DNA methylation of the mouse H19 ICR transgene. The endogenous mouse H19 ICR was methylated in a wild-type manner in Kaiso-null mutant mice. Additionally, the human IC1 transgene acquired imprinted DNA methylation after fertilization in the absence of Kaiso.

conclusionsOur results indicate that Kaiso is not essential for either post-fertilization imprinted DNA methylation of the transgenic H19 ICR in mouse or for methylation imprinting of the endogenous mouse H19 ICR.

Indexed as

DNA MethylationGenomic ImprintingRNA, Long NoncodingTranscription FactorsAnimalsBinding SitesFemaleMaleMiceMice, TransgenicRepressor ProteinsH19 long non-coding RNARepressor ProteinsRNA, Long NoncodingTranscription FactorsZfp-57 protein, mouseDNA methylationGenomic imprintingImprinting control region

Identifiers

PMID38840164
PMCPMC11151560

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