Fluorotelomer alcohols induce hepatic vitellogenin through activation of the estrogen receptor in male medaka (Oryzias latipes)

Fluorotelomer alcohols induce hepatic vitellogenin through activation of the estrogen receptor in male medaka (Oryzias latipes)
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DOI:
10.1016/j.chemosphere.2008.01.065
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发表时间:
2008-05-01
期刊:
影响因子:
8.8
通讯作者:
Arizono, Koji
Arizono, Koji
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Ishibashi, Hiroshi;Yamauchi, Ryoko;Arizono, Koji

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在这里,我们报告的两个氟调聚物醇,如1H,1H,2 H,2 H-全氟癸-1-醇(6:2 FTOH)和1H,1H,2 H,2 H-全氟癸-1-醇(8:2 FTOH),在雄性青鳉(Oryzias latipes)体内雌激素样作用。体外酵母双杂交试验表明,在用6:2 FTOH、8:2 FTOH或2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-十九碳氟-1-癸醇(NFDH)处理后,青鳉雌激素受体α(ER α)和共激活因子TIF 2之间存在显著的剂量依赖性相互作用。供试化合物对青鳉雌激素受体α的雌激素效应的相对等级依次为雌二醇-17 β(100)>> 6:2 FTOH(0.16)> NFDH(0.016)> 8:2 FTOH(0.0044)。相比之下,在用全氟辛烷磺酸(PFOS)、全氟辛酸(PFOA)、全氟壬酸(PFNA)、全氟十二烷酸(PFDA)或全氟十一烷酸(PFUnDA)处理后,未观察到与ER α的相互作用。肝卵黄蛋白原(VTG)蛋白的表达分析表明,雌激素的潜力,6:2 FTOH和8:2 FTOH,表明诱导VTG合成在雄性青鳉的肝脏。我们还研究了两种ER亚型(ER α和β)和两种VTG(VTG I和VTG II)的mRNA表达水平在暴露于FTOH后的雄性青鳉的肝脏。实时定量聚合酶链反应分析显示,肝脏ER α,VTG I,和VTG II mRNA快速响应FTOH,如6:2 FTOH和8:2 FTOH后8小时曝光,而没有这些化合物对ERP mRNA转录的影响进行了观察。来自体外和体内测定的这些结果强烈表明,某些FTOH,如6:2 FTOH和8:2 FTOH,通过激活雄性青鳉中的ER α诱导肝VTG。(c)2008爱思唯尔有限公司保留所有权利。
Here we report on the in vivo estrogenic effects of two fluorotelomer alcohols, such as 1H,1H,2H,2H-perfluorodecan-1-ol (6:2 FTOH) and 1H,1H,2H,2H-perfluorodecan-1-ol (8:2 FTOH), in male medaka (Oryzias latipes). An in vitro yeast two-hybrid assay indicated a significant, dose-dependent interaction between medaka estrogen receptor alpha (ER alpha) and coactivator TIF2 upon treatment with 6:2 FTOH, 8:2 FTOH or 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-nonadecafluoro-1-decanol (NFDH). The relative ranks of tested chemicals on the estrogenic effects for medaka ER alpha descended in the order of estradiol-17 beta (100) >> 6:2 FTOH (0.16) > NFDH (0.016) > 8:2 FTOH (0.0044). In contrast, no interaction with the ER alpha was observed upon treatment with perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorododecanoic acid (PFDA) or perfluoroundecanoic acid (PFUnDA). Expression analysis of hepatic vitellogenin (VTG) protein showed estrogenic potentials with, 6:2 FTOH and 8:2 FTOH, indicative of the induction of VTG synthesis in the livers of male medaka. We also investigated mRNA expression levels of two ER subtypes (ER alpha and beta) and two VTGs (VTG I and VTG II) in the livers of male medaka following exposure to FTOHs. Quantitative real-time polymerase chain reaction analyses revealed that hepatic ER alpha, VTG I, and VTG II mRNA responded rapidly to FTOHs such as 6:2 FTOH and 8:2 FTOH after 8-h exposure, whereas no effects of these compounds on ERP mRNA transcription were observed. These results from both in vitro and in vivo assays strongly suggest that certain FTOHs, such as 6:2 FTOH and 8:2 FTOH, induce hepatic VTG through activation of ER alpha in male medaka. (c) 2008 Elsevier Ltd. All rights reserved.