Gestational oral low-dose estradiol-17β induces altered DNA methylation of CDKN2D and PSAT1 in embryos and adult offspring

Scientific Reports
Vera A van der WeijdenSusanne E Ulbrich

Abstract

Endocrine disrupting chemicals (EDC) interfere with the natural hormone balance and may induce epigenetic changes through exposure during sensitive periods of development. In this study, the effects of short-term estradiol-17β (E2) exposure on various tissues of pregnant sows (F0) and on day 10 blastocysts (F1) were assessed. Intergenerational effects were investigated in the liver of 1-year old female offspring (F1). During gestation, sows were orally exposed to two low doses and a high dose of E2 (0.05, 10, and 1000 µg/kg body weight/day). In F0, perturbed tissue specific mRNA expression of cell cycle regulation and tumour suppressor genes was found at low and high dose exposure, being most pronounced in the endometrium and corpus luteum. The liver showed the most significant DNA hypomethylation in three target genes; CDKN2D, PSAT1, and RASSF1. For CDKN2D and PSAT1, differential methylation in blastocysts was similar as observed in the F0 liver. Whereas blastocysts showed hypomethylation, the liver of 1-year old offspring showed subtle, but significant hypermethylation. We show that the level of effect of estrogenic EDC, with the periconceptual period as a sensitive time window, is at much lower concentration than currently p...Continue Reading

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Citations

Jan 18, 2020·Environmental Health Perspectives·Felicia Fei-Lei Chung, Zdenko Herceg
Jun 2, 2020·Epigenetics : Official Journal of the DNA Methylation Society·Jibran Sualeh MuhammadMawieh Hamad
May 6, 2020·International Journal of Molecular Sciences·Tamás KovácsIstván M Ábrahám

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Methods Mentioned

BETA
Assay
Methylation Assay
electrophoresis
chips

Software Mentioned

Fluidigm
Primer Blast
PyroMark Assay Design
SPSS
PyroMark Q48 Autoprep
Meth Primer

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