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• 基础研究 • 上一篇    下一篇

微乳丹参酮逆转肿瘤多药耐药的作用

刘长剑,刘建国,于铁成,罗宗键   

  1. 吉林大学第一医院骨科,吉林 长春 130021
  • 收稿日期:2006-04-17 修回日期:1900-01-01 出版日期:2007-03-28 发布日期:2007-03-28
  • 通讯作者: 刘建国

Reversal effect of Tan microemulsion on multidrug resistance

LIU Chang-jian, LIU Jian-guo, YU Tie-cheng, LUO Zong-jian   

  1. Department of Orthopaedics, First Hospital, Jilin University, Changchun 130021, China
  • Received:2006-04-17 Revised:1900-01-01 Online:2007-03-28 Published:2007-03-28
  • Contact: LIU Jian-guo

摘要: 目的:观察中药新剂型微乳丹参酮对人白血病敏感细胞株(sensitive K562 cell line, KS)及其阿霉素(ADM)耐药株(ADM resistant K562 cell line,KA)的多药耐药性逆转效果,并探讨其可能机制。方法:用中药制剂微乳丹参酮作为逆转剂, 丹参酮和空白微乳体系作为对照,作用于耐药株,采用MTT法、流式细胞术、荧光强度法检测逆转前后相关指标变化。结果:微乳丹参酮、空白微乳体系及丹参酮均可显著降低KA的耐药性,微乳丹参酮的作用最强,逆转倍数显著高于空白微乳体系和丹参酮两组(P<0.05)。微乳丹参酮、空白微乳体系及丹参酮均可降低KA的P-gp和Bcl-2表达水平,使肿瘤细胞凋亡比率上升,微乳丹参酮的作用最强,使肿瘤细胞在ADM作用下的凋亡比率增加(P<0.05)。三者均可使细胞内ADM药 物浓度升高,微乳丹参酮作用后的KA细胞中ADM的浓度最高,与空白微乳体系和丹参酮组比较,差异有显著性(P<0.05)。结论: P-gp药物外排和Bcl-2高表达引起的凋亡抑制是多药耐药的发生机制之一。微乳丹参酮有很强的多药耐药逆转作用,可显著增加KA细胞内ADM药物浓度。

关键词: 微乳, K562细胞, 基因, bcl-2, P糖蛋白, 抗药性, 多药

Abstract: To investigate the reveral effect of Tanshitone(Tan) Microemulsion on multidrug resistance(MDR) of sensitive K562 cell line(KS) and ADM resistant K562 cell line (KA) and the mechanism. Methods The reversal effect of Tan Microemulsion (Tan and Microemulsion as controls) on MDR of KA cells was observed. The inhibitory effect of cell growth was investigated by MTT. The apoptosis of KS and KA cell lines was observed by flow cytometry.The intracellular drug concentration was measured by detecting fluorescent density. Results The result showed that Tan Microemulsion,Microemulsion and Tan reduced the expression levels of P-gp and Bcl-2 in KA cells and Tan Microemulsion had the most significant effect. The MDR reversal folds of Tan Microemulsion of KA was highest among all 3 groups(P<0.05). The intracellular concentration of ADM improved significantly by Tan Microemulsion, Microemulsion and Tan. The intracellular concentration of ADM treated by Tan Microemulsion was higest(P<0.05). Conclusion Tan Microemulsion can reverse the MDR of KA cells to some extent and increase the ADM concentration of KA cells.

Key words: microemulsion, K562 cells, genes, bcl-2, p-glycoprotein, drug resistance, multiple

中图分类号: 

  • R73-36