http://jcps.bjmu.edu.cn

中国药学(英文版) ›› 2016, Vol. 25 ›› Issue (7): 489-501.DOI: 10.5246/jcps.2016.07.054

• 【研究论文】 • 上一篇    下一篇

抗耐药长春瑞滨脂质体及其抗耐药性乳腺癌的效应与机制研究

谢红军, 刘磊, 曾凡, 沐黎敏, 赵曜, 阎妍, 胡英杰, 吴佳栓, 卜英子, 张婧莹, 吕万良*   

  1. 北京大学医学部 药学院 分子药剂学与新释药系统北京市重点实验室, 天然药物及仿生药物国家重点实验室, 北京 100191
  • 收稿日期:2016-03-27 修回日期:2016-04-15 出版日期:2016-07-19 发布日期:2016-04-02
  • 通讯作者: Tel./Fax: +86-010-82802683, E-mail: luwl@bjmu.edu.cn
  • 基金资助:

    Key Grant of Beijing Natural Science Foundation (Grant No. 7131009), and the National Science Foundation of China (Grant No. 81373343).

Efficacy and mechanism of antiresistant vinorelbine liposomes in treating resistant breast cancer cells

Hongjun Xie, Lei Liu, Fan Zeng, Limin Mu, Yao Zhao, Yan Yan, Yingjie Hu, Jiashuan Wu, Yingzi Bu, Jingying Zhang, Wanliang Lu*   

  1. Beijing Key Laboratory of Molecular Pharmaceutics and New Drug System, State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science  Center, Beijing 100191, China
  • Received:2016-03-27 Revised:2016-04-15 Online:2016-07-19 Published:2016-04-02
  • Contact: Tel./Fax: +86-010-82802683, E-mail: luwl@bjmu.edu.cn
  • Supported by:

    Key Grant of Beijing Natural Science Foundation (Grant No. 7131009), and the National Science Foundation of China (Grant No. 81373343).

摘要:

在乳腺癌的综合治疗策略中, 化疗药物对于清除癌细胞起关键作用。但是, 抗癌药物的多药耐药性是化疗成功的主要障碍之一。本研究旨在构建一种抗耐药长春瑞滨脂质体并考察其抗耐药性乳腺癌的效应与机制。以耐药性人乳腺癌MCF-7/adr细胞为模型进行效应和机制研究; 将长春瑞滨包封于脂质体内核、将他莫昔芬和地喹氯铵修饰脂质体表面, 制备了抗耐药长春瑞滨脂质体, 其平均粒径约100 nm。该脂质体表现出较强的体外杀伤耐药性乳腺癌效果, 其作用机制与如下因素有关: 增加耐药性癌细胞中药物摄取; 降低耐药性癌细胞膜转运蛋白ABCB1ABCC10的表达; 载药脂质体靶向性作用于线粒体并诱导癌细胞凋亡。诱导凋亡信号通路包括: 激活凋亡酶caspase (8, 9, 3); 诱导线粒体释放细胞色素c; 激活Bax活性并抑制Mcl-1活性; 诱导产生活性氧ROS。因此, 本研究构建了一种新的抗耐药长春瑞滨脂质体, 可望用于耐药性乳腺癌的治疗, 并为耐药性乳腺癌的治疗提供一种备选策略。

关键词: 抗耐药长春瑞滨脂质体, 线粒体靶向, 凋亡信号通路, 疗效, 耐药性乳腺

Abstract:

Among the comprehensive treatment strategies of breast cancer, chemotherapy plays a crucial role in eliminating cancer cells. However, multidrug resistance is one of the major obstacles to successful treatment. The objectives of this study were to construct an antiresistant vinorelbine liposomes and to demonstrate the efficacy and mechanism for treating resistant breast cancer cells. The study was performed using breast cancer MCF-7/adr cells. The antiresistant vinorelbine liposomes were modified with tamoxifen and dequalinium. The average particle size of antiresistant vinorelbine liposomes were approximately 100 nm, and they showed a robust overall anticancer efficacy by direct killing and by apoptosis induction. The mechanisms were associated with increased cellular uptake, decreased ABCB1 and ABCC10 transporters, and targeting to mitochondria. The apoptosis signaling pathways were ralated to activiated caspases (8, 9, 3), induced release of cytochrome c from mitochondria, activated Bax, inhibited Mcl-1, and generation of ROS. The new antiresistant vinorelbine liposomes could be a useful formulation deserving further development, and the present study provides a potential strategy for circumventing drug resistance in breast cancer.

Key words: Antiresistant vinorelbine liposomes, Mitochondrial targeting, Apoptosis signaling pathways, Efficacy, Resistant breast cancer

中图分类号: 

Supporting: