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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (4): 393-395.

• 研究原著 • 上一篇    下一篇

洛美利嗪对人白血病细胞K562/ADM多药耐药的逆转作用

吴玉林, 祝浩杰1, 刘国卿1   

  1. 中国药科大学生理教研室,南京 210009,江苏;
    1中国药科大学药理教研室,南京 210009,江苏
  • 收稿日期:2003-03-20 修回日期:2003-04-01 出版日期:2003-08-26 发布日期:2020-11-19
  • 通讯作者: 刘国卿,男,教授,博士生导师,研究方向:神经药理、脑血管药理。Tel:025-3271340 E-mail:liugq@vip.163.com

Reversal oflomerizine on multidrug resistance in humanleukemia cellline K562 ADM

WU Yu-Lin, ZHU Hao-Jie1, lIU Guo-Qing1   

  1. Department ofPhysiology,ChinaPharmaceutical University,Nanjing 210009,Jiangsu,China;
    1Department ofPharmacology,ChinaPharmaceutical University,Nanjing 210009,Jiangsu,China
  • Received:2003-03-20 Revised:2003-04-01 Online:2003-08-26 Published:2020-11-19

摘要: 目的 研究洛美利嗪(lomerizine,Lom)对人白血病细胞K562/ADM 多药耐药逆转作用及机制。方法 使用MTT 法检测Lom 对K562/ADM 多药耐药细胞柔红霉素(DNR)细胞毒性的影响,使用荧光分光光度计和流式细胞术分析Lom 对K562/ADM 多药耐药细胞胞内P-糖蛋白(P-glycoprotein,P-gp)底物-罗丹明123 (rhodamine123,Rh123)的累积情况。结果 lom 能明显提高DNR 对K562/ADM 多药耐药细胞的细胞毒作用,并可使胞内Rh123 的浓度增加。K562敏感细胞株则不受影响。结论 lom 能显著地抑制K562/ADM 多药耐药细胞上P-gP的活性,提高P-gp底物的胞内浓度,并增强其他抗癌药的细胞毒作用。

关键词: 药理学, 洛美利嗪, P-糖蛋白, P-糖蛋白抑制剂, 多药耐药性

Abstract: AIM: To investigate the efficacy oflomerizine on multidrug resistance(MDR)reversal and its mechanism.METHODS: Cytotoxicity of daunomycin(DNR)on K562/ADM was assessed by MTT assay in thePresence oflomerizine.Fluorescence ofP-glycoprotein(P-gp)substrate rhodamine123(Rh123)in K562/ADM was measured by fluorescence spectrophotometry and flow cytometry.RESULTS: Lomerizine could significantly increase the chemosensitivity of K562/ADM to DNR and intracellular content of Rh123.No effect was found in K562 cells.CONCLUSION: Lomerizine shows significant inhibition on the activity ofP-gPin K562/ADM,increases intracellular accumulation ofP-gPsubstrates,and enhances cytotoxicity of other anticancer drugs.

Key words: pharmacology, lomerizine, P-glycoprotein, P-glycoprotein inhibitor, multidrug resistance

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