Back to the future: transgenerational transmission of xenobiotic-induced epigenetic remodeling

Epigenetics : Official Journal of the DNA Methylation Society
Josep C Jiménez-ChillarónPaulo J Oliveira

Abstract

Epigenetics, or regulation of gene expression independent of DNA sequence, is the missing link between genotype and phenotype. Epigenetic memory, mediated by histone and DNA modifications, is controlled by a set of specialized enzymes, metabolite availability, and signaling pathways. A mostly unstudied subject is how sub-toxic exposure to several xenobiotics during specific developmental stages can alter the epigenome and contribute to the development of disease phenotypes later in life. Furthermore, it has been shown that exposure to low-dose xenobiotics can also result in further epigenetic remodeling in the germ line and contribute to increase disease risk in the next generation (multigenerational and transgenerational effects). We here offer a perspective on current but still incomplete knowledge of xenobiotic-induced epigenetic alterations, and their possible transgenerational transmission. We also propose several molecular mechanisms by which the epigenetic landscape may be altered by environmental xenobiotics and hypothesize how diet and physical activity may counteract epigenetic alterations.

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Citations

Feb 2, 2018·Current Molecular Biology Reports·Sam HoufflynAdelheid Soubry
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Nov 8, 2021·The Science of the Total Environment·Gerhard P AignerMartina Höckner

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Methods Mentioned

BETA
histone acetylation
acetylation

Related Concepts

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