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Biochem Biophys Res Commun. 2008 Nov 21;376(3):563-7. doi: 10.1016/j.bbrc.2008.09.028. Epub 2008 Sep 17.

Genome-wide analysis of epigenomic alterations in fetal mouse forebrain after exposure to low doses of bisphenol A.

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  • 1Department of Pathology and Applied Neurobiology, Graduate School of Medical Sciences, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji Kajii-cho, Kamigyo-ku, Kyoto 602-8566, Japan.


Bisphenol A (BPA) is one of endocrine disrupting chemicals, being distributed widely in the environment. We have been studying the low dose effects of BPA on murine forebrain development. Here, we have investigated the genome-wide effect of maternal exposure to BPA on the epigenome in mouse forebrain at E12.5 and at E14.5. We scanned CpG methylation status in 2500 NotI loci, representing 48 (de)methylated unique loci. Methylation status in most of them was primarily developmental stage-dependent. Each of almost all cloned NotI loci was located in a CpG island (CGI) adjacent to 5' end of the transcriptional unit. The mRNA expression of two functionally related genes changed with development as well as the exposure to BPA. In both genes, changes at the transcriptional level correlated well with the changes in NotI methylation status. Taken together, epigenetic alterations in promoter-associated CGIs after exposure to BPA may underlie some effects on brain development.

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