解剖学报 ›› 2020, Vol. 51 ›› Issue (6): 906-911.doi: 10.16098/j.issn.0529-1356.2020.06.015

• 肿瘤生物学 • 上一篇    下一篇

芸香苷逆转人大肠癌LoVo/5-氟尿嘧啶细胞耐药性及其机制

王婷婷1 刘超怡2 李秀芬3 李娜1* 刘安丽1   

  1. 1.郑州澍青医学高等专科学校组织胚胎学与病理学教研室,郑州 450064; 2.黄河科技学院微生物学免疫学教研室,郑州 450003; 3.河南应用技术职业学院基础医学教研室,郑州 450003 
  • 收稿日期:2019-05-09 修回日期:2019-11-01 出版日期:2020-12-06 发布日期:2020-12-06
  • 通讯作者: 李娜 E-mail:2877987015@qq.com
  • 基金资助:
    河南省高等学校青年骨干教师培养项目

Reversal effect of rutin on drug resistance in human colorectal cancer LoVo/5-fluorouracil cells and its mechanisms

WANG Ting-ting1  LIU Chao-yi2  LI Xiu-fen3  LI Na1*  LIU An-li1   

  1. 1.Department of Histoembryology and Pathology, Zhengzhou Shuqing Medical College, Zhengzhou 450064, China; 2.Department of Microbiology and Immunology, Huanghe Science and Technology University, Zhengzhou 450003, China; 3.Department of Basic Medicine, He’nan Vocational College of Applied Technology, Zhengzhou 450003, China
  • Received:2019-05-09 Revised:2019-11-01 Online:2020-12-06 Published:2020-12-06
  • Contact: LI Na E-mail:2877987015@qq.com

摘要:

目的  探讨芸香苷(RT)对大肠癌耐药株LoVo/5-氟尿嘧啶(5-FU)细胞耐药性的影响及其机制。  方法  采用浓度梯度递增法建立耐药株LoVo/5-FU细胞;用不同剂量的RT和(或)5-FU处理48 h后,采用细胞计数试剂盒8(CCK-8)法检测细胞活力,流式细胞术检测细胞凋亡和细胞周期,RT-PCR法检测P-糖蛋白(P-gp)和多药耐药相关蛋白1(MRP1)的mRNA表达水平,Western blotting法检测P-gp、MRP1、磷酸化蛋白激酶B(p-Akt)、Akt、Survivin、细胞周期蛋白A(cyclin A)和细胞周期素依赖性蛋白激酶2(CDK2)的蛋白表达水平。  结果  LoVo/5-FU细胞中P-gp、MRP1和Survivin蛋白表达水平均显著高于LoVo细胞;5-FU和RT对LoVo/-FU细胞的半数抑制浓度(IC50)分别为21.77 mg/L和98.43 mg/L;在10 mg/L RT作用下,5-FU对LoVo/5-FU细胞的IC50 降至10.64 mg/L,逆转倍数为2.05;RT可协同增强5-FU引起的LoVo/5-FU细胞凋亡和S期阻滞,抑制P-gp和MRP1基因表达以及Akt磷酸化,下调Survivin、cyclin A和CDK2蛋白水平。  结论  RT可通过抑制Akt信号通路以及耐药相关蛋白的表达反转LoVo/5-FU细胞对5-FU的耐药性。

关键词: 芸香苷, 5-氟尿嘧啶, 大肠癌LoVo/5-FU细胞系, 逆转耐药, 免疫印迹法,

Abstract:

 Objective  To investigate the effects of rutin (RT) on 5-fluorouracil (5-FU) resistance in human colorectal cancer LoVo/5-FU cells and its possible mechanism.   Methods The drug-resistant LoVo/5-FU cells were established by stepwise exposure to 5-FU. LoVo and LoVo/5-FU cells were cultured in vitro and treated with RT and(or)5-FU for 48 hours, and then the cell viability were detected by cell counting kit-8(CCK-8) assay. The cell apoptosis and cell cycle were analyzed by flow cytometry. The mRNA expression levels of P-glycoprotein (P-gp) and multidrug resistance associated protein 1 (MRP1) were measured by RT-PCR. The protein levels of P-gp, MRP1, phosphorylated protein kinase B(p-Akt), Survivin, cyclin A and cyclin dependent kinase 2 (CDK2) were measured by Western blotting.   Results  LoVo/5-FU cells had a significantly higher protein levels of P-gp, MRP1 and survivin than LoVo cells. The 50% inhibitory concentration(IC50) value of LoVo/5-FU cells to 5-FU and RT was 21.77 mg/L and 98.43 mg/L respectively. Under the influence of RT (10 mg/L), the IC50 value of LoVo/5-FU cells to 5-FU reduced to 10.64 mg/L with a reversal fold of 2.05. RT resulted in an enhance of 5-FU-induced apoptosis and S phase arrest, inactivation of Akt, and lower expression of P-gp, MRP1, survivin, cyclin A and CDK2 in LoVo/5-FU cells.   Conclusion  RT can reverse the drug resistance of LoVo/5-FU cells through down-regulating the expression of drug-resistant related protein and suppressing Akt signaling pathway.

Key words: Rutin, 5-fluorouracil, Colorectal cancer LoVo/5-FU cell, Reversal of drug resistance, Western blotting, Human

中图分类号: