双酚A和邻苯二甲酸二丁酯对人乳腺癌细胞株MCF-7细胞增殖的影响

The Effect of Bisphenol A and Dibutyphthlate Treated With Rat Liver S9 on Proliferation of MCF-7 Cells

目的研究环境内分泌干扰物双酚A、邻苯二甲酸二丁酯在经大鼠肝微粒体酶混合物(S9)作用后对雌激素受体阳性的人乳腺癌细胞株MCF-7增殖作用的影响。方法分别将不同浓度的阳性对照物(17β-雌二醇)以及受试物双酚A、邻苯二甲酸二丁酯经大鼠肝S9酶系作用后,用其代谢产物刺激体外培养的MCF-7细胞,用四甲基偶氮唑盐(MTT)法测定细胞增殖的量。结果17β-雌二醇和邻苯二甲酸二丁酯经S9代谢后,其促进MCF-7细胞增殖的活性降低,而经S代谢后的双酚A则表现为较强的促进MCF-7细胞增殖的活性。结论17β-雌二醇和邻苯二甲酸二丁酯经S9代谢后雌激素活性减弱,而双酚A经S代谢后雌激素活性增强。

Objective To study the effect of bisphenol A (BPA) and dibutyphthlate (DBP) treated with Rat Liver S9 on proliferation MCF-7 cells. Methods Added the positive control 17β-estradiol (E2) and compounds of BPA and DBP with the effect of Rat Liver S9 to MCF-7 cells proliferation respectively and determinated the quantity of MCF-7 cells with MTT assay. Results The activity of E2 and DBP stimulated MCF-7 cells decreasing significantly with the effect of Liver S9 than without the effect of Liver S9, while BPA stimulated MCF-7 cells increasing significantly with the effect of Liver S9 than that without the effect of Liver S9. Conclusion E2 and DBP have a lower estrogenic activity with the effect of S9 than without the effect of S9. BPA shows a higher estrogenic activity with the effect of S9 than without the effect of S9.