吉林大学学报(医学版)

• 基础研究 • 上一篇    下一篇

硼替佐米通过内质网应激途径增强力达霉素对人多发
性骨髓瘤细胞SKO-007凋亡诱导作用 

甄永占1,纪春梅2,赵毓芳1,闫 丰3,刘学军3,王梅梅1,徐爱军1   

  1. 1.河北联合大学基础医学院组织学与胚胎学教研室,河北 唐山063000;2.河北省唐山
    市协和医院呼吸内科,河北 唐山 063000;3.河北联合大学附属医院肿瘤科,
    河北 唐山 063000
  • 收稿日期:2013-03-30 发布日期:2013-12-12
  • 通讯作者: 甄永占(Tel:0315-3725754,E-mail:yongzhanzhen @126.com) E-mail:yongzhanzhen @126.com
  • 作者简介:甄永占(1970-),女,河北省唐山市人,副教授,医学博士,主要从事肿瘤分子药理学研究。
  • 基金资助:

     河北省科技厅自然科学基金资助课题 (H2012401030)

Apoptosis-induction of lidamycin in human multiple 
myeloma SKO-007 cells enhanced by bortezomid through
 endoplasmic reticulum stress pathway

ZHEN Yong-zhan1,JI Chun-mei2,ZHAO Yu-fang1,YAN Feng3,LIU Xue-jun3,WANG Mei-mei1,XU Ai-jun1
   

  1. (1.Department of Histology and Embryology,College of Basic Medical Sciences,Hebei United University,
    Tangshan 063000,China;2. Department of Respiratory Medicine,Xiehe Hospital of Tangshan City,Hebei 
    Province,Tangshan 063000,China;3. Department of Oncology,Affiliated Hospital,Hebei United University,Tangshan 063000,China)
  • Received:2013-03-30 Published:2013-12-12

摘要:

目的:研究力达霉素(LDM)联合硼替佐米(BZM)的抗骨髓瘤作用,并探讨两药联合
协同抗骨髓瘤的作用机制。方法:选取处于对数生长期人多发性骨髓瘤细胞SKO-007随机分
为对照组、LDM组、BZM组和LDM+BZM联合组,采用MTS法和流式细胞术检测各组细胞存活率
、细胞周期分布和凋亡率;采用Western blotting 法检测各组SKO-007细胞凋亡相关蛋白
和内质网应激(ER
S)相关蛋白的表达量。结果:细胞培养48 h后,LDM+BZM联合组细胞存活率显著低于LDM组
、BZM组和对照组(P<0.05);LDM+BZM联合组
SKO-007细胞
G2/M期的细胞比例、细胞凋亡率、caspase-3和poly ADP-ribose polymerase (PAR
P)的
切割片段蛋白表达量、GRP78/Bip蛋白表达量、CHOP/GADDl53蛋白表达量和c-Jun氨基末端

激酶(JNK)蛋白磷酸化(p-JNK)

达量明显高于LDM组、BZM组和对照组(P<0.05)。结论:BZM通过上调caspase-
3和
PARP的切割片段蛋白表达量,进一步激活 ERS介导的凋亡途径,增强LDM的抗骨髓瘤作用。
[关键词] 

关键词: 硼替佐米, 力达霉素, 多发性骨髓瘤, 联合用药, 内质网应激

Abstract:

Objective To investigate the effect of lidamycin (LDM) combined with bortezomid (BZM) against multiple myeloma and the mechanism of the combination treatment.

Methods The human multiple myeloma SKO-007 cells in logarithm growth phase were selected and  randomly divided into control group,LDM group,BZM group,and BZM combined with LDM group. MTS assay was used to detect the survival  rate of SKO-007 cells and  flow cytometry  was used to analyze
the distribution of cell cycle and  apoptotic rate of the proliferation cells in various groups;the expression levels of protein associated with apoptosis and endoplasmic reticulum stress (ERS) of SKO-007 cells in various groups were detected by Western blotting method.
Results After  culture for 48 h,the survival  rate of the  cells  in BZM combined with LDM group was lower than
those  in control,LDM and BZM groups (P<0.05). The percentage of cells at  G2/M phase, the  apoptotic rate  of cells,
 the expression levels  of cleaved caspase-3 and poly ADP-ribose polymerase (PARP) of SKO-007 cells,the expressio
n levels  of GRP78/Bip,CHOP/GADDl53,and phosphorylation of c-Jun NH2-terminal kinase (p-JNK
) in BZM combined with LDM group were higher than those in control,LDM and BZM
 groups (all P<0.05). Conclusion BZM can greatly enhance the efficacy of LDM against
multiple myeloma by increasing the levels of cleaved caspase-3 and PARP,and remarkably increase the apoptosis induced by LDM through further activation of ERS.

Key words: bortezomid, lidamycin, multiple myeloma, combination therapy, endoplasmic reticulum stress

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