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  Genome-wide quantitative analysis of histone H3 lysine 4 trimethylation in wild house mouse liver: environmental change causes epigenetic plasticity

Börsch-Haubold, A., Montero, I., Konrad, K., & Haubold, B. (2014). Genome-wide quantitative analysis of histone H3 lysine 4 trimethylation in wild house mouse liver: environmental change causes epigenetic plasticity. PLoS ONE, 9(5): e97568. doi:10.1371/journal.pone.0097568.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8672-B Version Permalink: http://hdl.handle.net/21.11116/0000-0005-1A0E-0
Genre: Journal Article

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Börsch-Haubold, Angelika1, Author              
Montero, Inka, Author
Konrad, Kathryn, Author
Haubold, Bernhard1, Author              
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1Research Group Bioinformatics, Department Evolutionary Genetics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445644              

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 Abstract: In mammals, exposure to toxic or disease-causing environments can change epigenetic marks that are inherited independently of the intrauterine environment. Such inheritance of molecular phenotypes may be adaptive. However, studies demonstrating molecular evidence for epigenetic inheritance have so far relied on extreme treatments, and are confined to inbred animals. We therefore investigated whether epigenomic changes could be detected after a non-drastic change in the environment of an outbred organism. We kept two populations of wild-caught house mice (Mus musculus domesticus) for several generations in semi-natural enclosures on either standard diet and light cycle, or on an energyenriched diet with longer daylight to simulate summer. As epigenetic marker for active chromatin we quantified genomewide histone-3 lysine-4 trimethylation (H3K4me3) from liver samples by chromatin immunoprecipitation and highthroughput sequencing as well as by quantitative polymerase chain reaction. The treatment caused a significant increase of H3K4me3 at metabolic genes such as lipid and cholesterol regulators, monooxygenases, and a bile acid transporter. In addition, genes involved in immune processes, cell cycle, and transcription and translation processes were also differently marked. When we transferred young mice of both populations to cages and bred them under standard conditions, most of the H3K4me3 differences were lost. The few loci with stable H3K4me3 changes did not cluster in metabolic functional categories. This is, to our knowledge, the first quantitative study of an epigenetic marker in an outbred mammalian organism. We demonstrate genome-wide epigenetic plasticity in response to a realistic environmental stimulus. In contrast to disease models, the bulk of the epigenomic changes we observed were not heritable.

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Language(s): eng - English
 Dates: 2014-01-312014-04-172014-05-212014
 Publication Status: Published in print
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 Identifiers: DOI: 10.1371/journal.pone.0097568
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Title: PLoS ONE
Source Genre: Journal
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Publ. Info: San Francisco, CA : Public Library of Science
Pages: - Volume / Issue: 9 (5) Sequence Number: e97568 Start / End Page: - Identifier: ISSN: 1932-6203
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000277850