In utero exposures to environmental organic pollutants disrupt epigenetic marks linked to fetoplacental development

Abstract

While the developing fetus is largely shielded from the external environment through the protective barrier provided by the placenta, it is increasingly appreciated that environmental agents are able to cross and even accumulate in this vital organ for fetal development. To examine the potential influence of environmental pollutants on the placenta, we assessed the relationship between polybrominated diphenyl ethers (PBDEs), polychlorinated biphenyls (PCBs), 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE) and several epigenetic marks linked to fetoplacental development. We measured IGF2/H19 imprint control region methylation, IGF2 and H19 expression, IGF2 loss of imprinting (LOI) and global DNA methylation levels in placenta (n = 116) collected in a formative research project of the National Children's Study to explore the relationship between these epigenetic marks and the selected organic environmental pollutants. A positive association was observed between global DNA methylation and total PBDE levels (P <0.01) and between H19 expression and total PCB levels (P = 0.04). These findings suggest that differences in specific epigenetic marks linked to fetoplacental development occur in association with some, but not all, measured environmental exposures.

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@inproceedings{Kappil2016InUE, title={In utero exposures to environmental organic pollutants disrupt epigenetic marks linked to fetoplacental development}, author={Maya A. Kappil and Qian Li and An Li and Priyanthi S. Dassanayake and Yulin Xia and Jessica A. Nanes and Philip J . Landrigan and Christopher J. Stodgell and Kjersti Aagaard and Eric E. Schadt and Nancy Dole and Michael W. Varner and John H Moye and Carol H. Kasten and Richard K. Miller and Yula Y. Ma and Jia Chen and Luca Lambertini}, booktitle={Environmental epigenetics}, year={2016} }