Loss of BRCA1 leads to an increased sensitivity to Bisphenol A

Authors
Laundette P. JonesAishia SampsonHyo Jin KangHee Jeong KimYong-Weon YiSun Young KwonJanice K. BabusAntai WangInsoo Bae
Department
Dept. of Pathology (병리학)
Issue Date
2010
Citation
Toxicology Letters, Vol.199(3) : 261-268, 2010
ISSN
0378-4274
Abstract
Humans are chronically exposed to the plasticizer, Bisphenol A (BPA), that can adversely affect the normal hormonal regulation of cellular functions by mimicking the actions of estrogen. This biological response to BPA may vary according to an individual’s genetic characteristics (e.g., BRCA1 mutations or deletion). In this study, both cell culture and mouse models were used to elucidate whether the loss of BRCA1 function could affect BPA-mediated cell proliferation. In studies using BPA levels comparable to human exposures,we found that loss of BRCA1 enhances BPA-induced cell proliferation in both systems. In vitro, we found that loss of BRCA1 enhances BPA-induced ER signaling. In vivo, we found that BPA admin- istration stimulates mammary gland epithelial tissue/cell proliferation leading to hyperplasia in Brca1 mutant mice compared to wild-type control mice. These results suggest that the biological responses in BRCA1-deficient cells may depend on environmental exposures, specifically BPA. © 2010 Elsevier Ireland Ltd. All rights reserved Keywords: Brca1 Mammary gland Bisphenol A Mice
Keywords
Brca1Mammary glandBisphenol AMice
URI
http://kumel.medlib.dsmc.or.kr/handle/2015.oak/34675
Appears in Collections:
1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Pathology (병리학)
Keimyung Author(s)
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