Defining estrogenic mechanisms of bisphenol A analogs through high throughput microscopy-based contextual assays.

Defining estrogenic mechanisms of bisphenol A analogs through high throughput microscopy-based contextual assays.
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DOI:
10.1016/j.chembiol.2014.03.013
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发表时间:
2014-06-19
影响因子:
--
通讯作者:
Mancini MA
Mancini MA
中科院分区:
生物1区
文献类型:
--
作者:
Stossi F;Bolt MJ;Ashcroft FJ;Lamerdin JE;Melnick JS;Powell RT;Dandekar RD;Mancini MG;Walker CL;Westwick JK;Mancini MA

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Environmental exposures to chemically heterogeneous endocrine disrupting chemicals (EDCs) mimic or interfere with hormone actions, and negatively impact human health. Despite public interest and the prevalence of EDCs in the environment, methods to mechanistically classify these diverse chemicals in a high throughput (HT) manner have not been actively explored. Here, we describe the use of multi-parametric, HT microscopy-based platforms to examine how a prototypical EDC, Bisphenol A (BPA), and eighteen poorly studied analogs (BPXs), affect estrogen receptor (ER). We show that short exposure to BPA and most BPXs induce ERα and/or ERβ and change levels of target gene transcription. Many BPXs exhibit higher affinity for ERβ and act as ERβ antagonists, while they act largely as agonists or mixed agonists/antagonists on ERα. Finally, despite binding to ERs, some BPXs exhibit lower levels of activity. Our comprehensive view of BPXs activities allows their classification and evaluation of potential harmful effects. The strategy described here used on a large scale basis likely offers a faster, more cost-effective way to identify safer BPA alternatives.
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