天津医药 ›› 2016, Vol. 44 ›› Issue (5): 560-563.doi: 10.11958/20150257

• 细胞与分子生物学 • 上一篇    下一篇

高胰岛素对 MCF-7/ADR 细胞化疗敏感性的影响

朱楠楠 1,穆兰 2, 李代清 1?   

  1. 1天津医科大学代谢病医院, 卫生部激素与发育重点实验室 (邮编 300070); 2天津医科大学肿瘤医院, 国家肿瘤临床医学研究 中心, 天津市 “肿瘤防治” 重点实验室, 乳腺癌防治教育部重点实验室
  • 收稿日期:2015-10-23 修回日期:2015-11-12 出版日期:2016-05-15 发布日期:2016-05-18
  • 通讯作者: ∆通讯作者 E-mail:Daiqingli68@163.com E-mail:1107263860@qq.com
  • 作者简介:朱楠楠 (1990), 女, 硕士在读, 主要从事糖尿病治疗对肿瘤耐药影响方面研究
  • 基金资助:
    国家自然科学基金资助项目 (81472472)

Effects of high insulin on chemotherapeutic sensitivity in MCF-7/ADR cells

ZHU Nannan1, MU Lan2, LI Daiqing1?   

  1. 1 Key Laboratory of Hormones and Development (Ministry of Health), Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China; 2 Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Key Laboratory of Breast Cancer Prevention and Therapy, Ministry of Education, Tianjin Medical Universit
  • Received:2015-10-23 Revised:2015-11-12 Published:2016-05-15 Online:2016-05-18
  • Contact: ∆Corresponding Author E-mail:Daiqingli68@163.com E-mail:1107263860@qq.com

摘要: 摘要:目的 分析高胰岛素对 MCF-7/ADR 细胞 P-糖蛋白(P-gp)表达和功能的影响, 并初步探讨胰岛素对 MCF-7/ADR 细胞化疗敏感性的影响。方法 用不同胰岛素浓度(0.001、 0.005、 0.01、 0.05、 0.10 μmol/L)的全细胞培 养基干预 MCF-7/ADR 细胞, 分别采用 Real-time PCR 法检测细胞中 P-gp mRNA 表达, Western Blot 法检测细胞中 P-gp 蛋白表达水平, 罗丹明 123 荧光实验测定 P-gp 的外排功能变化, MTT 法检测 MCF-7/ADR 细胞活性及化疗敏 感性。结果 0.10 μmol/L 的胰岛素可促进 MCF-7/ADR 细胞增殖, 0.05 及 0.10 μmol/L 浓度的胰岛素可增加 MCF-7/ ADR 细胞 P-gp mRNA 及蛋白水平表达, 并能增加 P-gp 的外排功能, 降低 MCF-7/ADR 细胞对表阿霉素的化疗敏感 性。结论 高浓度胰岛素可能通过促进 MCF-7/ADR 细胞 P-gp 的表达和功能, 增加乳腺癌细胞化疗耐药性, 从而降 低 MCF-7/ADR 细胞的化疗敏感性。

关键词: 胰岛素, P 糖蛋白, 抗药性, 肿瘤, 表柔比星, MCF-7/ADR 细胞

Abstract: Abstract:Objective To analyse the effects of high insulin on the expression and function of P-glycoprotein (P-gp), and preliminarily investigate the influence of insulin on chemotherapeutic sensitivity in MCF- 7/ADR cells. Methods MCF-7/ADR cells were cultured with different concentrations of insulin(0.001, 0.005, 0.01, 0.05 and 0.1 μmol/L). Real time PCR was used to detect the expression of P-gp mRNA. Western blot assay was used to detect the expression level of P gp. Rhodamine 123 was used to detect the efflux function level of P-gp. Cell viability and chemotherapeutic sensitivity were detected by MTT assay. Results High concentration of insulin (0.1 μmol/L) promoted the proliferation of MCF- 7/ADR cells. The concentration of insulin (0.05 and 0.1 μmol/L) accelerated P- gp mRNA and protein expression, which also augmented the efflux function of P-glycoprotein and reduced the chemotherapeutic sensitivity to epirubicin. Conclusion High concentration of insulin may influence the drug resistance of breast cancer cells by promoting the expression and function of P-glycoprotein of MCF-7/ADR cells.

Key words: insulin, P-glycoprotein;, drug resistance, neoplasm, Epirubicin, MCF-7/ADR cell