摘要
目的探讨青蒿琥酯联合来那度胺对多发性骨髓瘤耐药(MM.1R)细胞株增殖的影响并分析其作用机制。方法实验设4组,空白对照组只加RPMI 1640培养液、来那度胺组加20μmol/L来那度胺、青蒿琥酯组加25μg/m L青蒿琥酯、来那度胺联合青蒿琥酯组加20μmol/L来那度胺浓度和25μg/m L青蒿琥酯浓度,终体积为200μL,分别对MM.1R细胞株处理24和48 h,MTT法检测细胞增殖;Western blot检测来那度胺联合青蒿琥酯处理24和48 h,MM.1R细胞株NF-κB P65蛋白,Bcl-2家族抗凋亡蛋白Bcl-xl、Mcl-1、p-Bad,多药耐药基因MDR1蛋白表达产物P-gp的表达水平。结果来那度胺、青蒿琥酯、来那度胺联合青蒿琥酯处理24和48 h,各组抑制率分别为15.16%、28.28%、45.98%和17.19%、34.53%、65.16%,与对照组比较差异均有统计学意义(P<0.05,P<0.01),来那度胺联合青蒿琥酯组抑制率高于单药处理组(P<0.05),两药联合有良好的协同效应,两药联合处理48 h抑制率高于24 h,抑制效应呈时间依赖性;来那度胺联合青蒿琥酯处理24和48 h,MM.1R细胞株P-gp、NF-κB P65、Bcl-xl、Mcl-1、p-Bad表达量均低于对照组(P<0.05),两药联合处理48 h,MM.1R细胞株NF-κB P65、Bcl-xl、Mcl-1、p-Bad蛋白表达量低于24 h(P<0.05),表现出时间依赖性。结论青蒿琥酯、来那度胺可抑制耐药MM细胞增殖,两药联合有协同效应,时间依赖性下调NF-κB P65蛋白、Bcl-2家族抗凋亡蛋白Bcl-xl、Mcl-1、p-Bad的表达,降低P-gp表达水平可能为其逆转肿瘤细胞耐药的作用机制。
Objective To investigate the combination effect of artesunate and lenalidomide on the proliferation of bortezomib- resistant multiple myeloma cell line MM. 1R,and its molecular mechanism. Methods MM. 1R cells were cultured in RPMI 1640 and treated with DMSO( control group),lenalidomide( 20 μmol / L),artesunate( 25 μg / m L),or lenalidomide( 20 μmol / L) plus artesunate( 25 μg / m L),separately. After 24 or 48 h,the cell proliferation rates were assessed by MTT assay,and the NF- κB( P65),Bcl- xl,Mcl- 1,p- Bad,and P- gp protein levels were measured by Western blot. Results The inhibitory rate of cell proliferation was 15. 16% by lenalidomide for 24 h,28. 28% by lenalidomide for 48 h,45. 98% by artesunate for 24 h,17. 19% by artesunate for 24 h,34. 53% by lenalidomide plus artesunate for 24 h,or 65. 16% by lenalidomide plus artesunate for 48 h( P〈0. 05). NF- κB( P65),Bcl- xl,Mcl- 1,p-Bad,and P- gp proteins were down- regulated by lenalidomide plus artesunate treatment in a time- dependent manner.Conclusion Both artesunate and lenalidomide inhibit MM. 1R cell proliferation. Combination of artesunate with lenalidomide can enlarge this effect through down- regulating NF- κB( P65),Bcl- xl,Mcl- 1,p- Bad,and P- gp.
作者
欧瑞明
周长华
谭友平
刘爽
钟启
张青
杜苑苑
郑丽玲
刘志
黄竞
OU Rui-ming ZHOU Chang-hua TAN You-ping LIU Shuang ZHONG Qi ZHANG Qing DU Yuan-yuan ZHENG Li-ling LIU Zhi HUANG Jing(Department of Hematology, Guangdong No. 2 People's Provincial Hospital, Guangzhou 510317, China.)
出处
《广东医学》
CAS
北大核心
2017年第4期501-504,共4页
Guangdong Medical Journal
基金
国家自然科学基金资助项目(编号:81400168)
广东省医学科研基金立项项目(编号:A2013128)
广东省中医药局建设中医药强省科研课题(编号:20131104)
广东省第二人民医院引进人才科研启动基金(编号:YY2014-002)
关键词
青蒿琥酯
来那度胺
骨髓瘤
耐药
artesunate
lenalidomide
multiple myeloma
drug-assistant