文章摘要
茅昌飞 1 唐金海 1 △ 孙大伟 2 吴建中.BPA 激活 GPER-EGFR-ERK1 /2 信号通路诱导乳腺癌细胞增殖[J].,2015,15(6):1024-1027
BPA 激活 GPER-EGFR-ERK1 /2 信号通路诱导乳腺癌细胞增殖
Involvement of GPER-EGFR-ERK1 /2 in Bisphenol A Induced Breast CancerCell Proliferation
  
DOI:
中文关键词: 双酚 A  GPER  乳腺癌  细胞增殖
英文关键词: Bisphenol A  GPER  Breast cancer  Proliferati
基金项目:
作者单位
茅昌飞 1 唐金海 1 △ 孙大伟 2 吴建中 (1南京医科大学附属江苏省肿瘤医院 江苏 南京 21 0009 2 南京中医药大学 江苏 南京 210023) 
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中文摘要:
      目的: 研究雌激素 G 蛋白 偶联受体( G protein-coupled estrogen receptor, GPER)- 表皮生长因子受体( epidermal growthfactor receptor, EGFR)- 细胞外调节蛋白 激酶 1/2 (extracellular regulated protein kinases, ERK)信号通路在双酚 A 促乳腺癌细胞 SKBR-3 增殖中的作用 。方法: 采用 CCK8 试剂盒检测 SKBR-3 细胞的增殖情况, 利用 Western Blot 观察 ERK1 /2 磷酸化变化。结果: 与 对照 组相比, 10-11~ 10-7 M 浓度的双酚 A 具有促乳腺癌细胞增殖作用 , 10-9M 浓度的双酚 A 可诱导细胞增殖最大效应(细胞活力高于对 照组约 38.84 %, P<0.001);预孵 GPER、 EGFR、 ERK1/2 特异性抑制 剂 G15、 AG-1478、PD98059 后, 双酚 A 诱导的乳腺癌细胞增殖 明 显减少, 细胞活力 与单纯双酚 A( 10-9 M)处理相比降低约 1 4.27 %、12.23 %和 17.98 %( P<0.05); 双酚 A( 10-9 M)处理细胞 0.5、 1、 3 小时后, 发现磷酸化的细胞外信号调节激酶( p-ERK)的 表达明 显高于对照组, 双酚 A 可快速激活 ERK1 /2; 而阻断 GPR30 和 EGFR 后, ERK1 /2 的磷酸化表达减少。 结论: 双酚 A 诱导的乳腺癌细胞增殖可能与 GPR30-EGFR-ERK1 /2 信号通路有关, 但不是 唯一通路。 深入研究双酚 A 对促进乳腺癌细胞增殖机制, 可能为 乳腺癌的防治提供新的方向。
英文摘要:
      Objective:To explore the effect of Bisphenol A on the proliferation of human breast cancer cells (SKBR-3) via GPER-EGFR-ERK1/2 signaling pathway.Methods:CCK8 assay was used to detect the proliferation of SKBR-3 cells, and Western Blotting was applied to observe phosphorylation of ERK1/2.Results:Cell proliferation increased significantly with treatment of 10-11-10-7 M BPA after 24 h, and 10-9 M BPA can induce cell proliferation maximum effect (cell viability higher approximately 38.84 % compared with the control, P<0.001 ); with pre-incubation of G15, AG-1478 and PD98059 (specific antagonist of GPER, EGFR and ERK1 /2), cell proliferation decreased remarkably. Cell viability had a decrease of approximately 14.27 %, 1 2.23 % and 17.98 % compared with BPA (10-9 M) treatment (P<0.05); 0.5, 1, 3 h after BPA (10-9 M) treatment, phosphorylated extracellular signal-regulated kinase (p-ERK) expression increased significantly, indicating that ERK 1 /2 was activated rapidly; after blocking GPR30 and EGFR, ERK 1 /2 phosphorylation decreased.Conclusion:GPR30-EGFR-ERK 1/2 signaling pathway was involved in BPA-induced breast cancer cell proliferation. In-depth research of BPA to breast cancer cell proliferation may provide a new direction for the prevention and treatment of breast cancer.
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