吉林大学学报(医学版)

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五味子提取物对脑胶质瘤神经球细胞增殖的抑制作用

齐玲1,金宏2,沈楠2,李蕴潜3, 赵东海1,田晶1   


  1. (1.吉林医药学院基础医学院病理学教研室,吉林 吉林 132013;2.吉林医药学院实验中心,吉林 吉林 132013;3.吉林大学第一医院神经外科,吉林 长春 130021)
  • 收稿日期:2013-04-17 出版日期:2013-09-28 发布日期:2013-09-28
  • 通讯作者: 齐 玲 E-mail:(Tel:0432-64560027,E-mail:qiling1718@163.com)
  • 作者简介:齐 玲(1974-),女,吉林省吉林市人,副教授,医学博士,主要从事肿瘤药物研究。
  • 基金资助:

    国家自然科学基金资助课题(81201671);吉林省教育厅科研基金资助课题(2011281,2012330)

Inhibitory effect of Schisandra chinensis extract on proliferation of  neurospheres of glioma

QI Ling1,JIN Hong2,SHEN Nan2,LI Yun-qian3,ZHAO Dong-hai1,TIAN Jing1   

  1. (1.Department of Pathology,Jilin Medical College,Jilin 132013,China;2.ExperimentalCenter,Jilin Medical College,Jilin 132013,China;3.Department of Neurosurgery,First Hospital,Jilin University,Changchun 130021,China)
  • Received:2013-04-17 Online:2013-09-28 Published:2013-09-28

摘要:

目的:探讨五味子提取物对脑胶质瘤神经球细胞生长的作用,并初步探讨其可能的机制。方法:培养脑胶质瘤SHG-44细胞,将其置入干细胞培养液[神经培养基加入B27添加物、表皮生长因子(EGF)和碱性成纤维细胞生长因子(bFGF)]中进行培养,3代以后用于实验。将脑胶质瘤SHG-44细胞分为对照组,50、100和200 mg•L-1 五味子提取物组,MTT法检测各组神经球细胞的增殖抑制率,酶联免疫吸附实验检测五味子提取物作用后神经球培养上清中Bcl-2、Bax和caspase-3 蛋白表达水平。结果:MTT法检测,与对照组比较,50、100和200 mg•L-1 五味子提取物组SHG-44神经球细胞24、48和72 h时增殖抑制率均升高(P<0.01);酶联免疫吸附实验,不同浓度五味子提取物作用神经球48 h后,培养上清中Bcl-2和Bax蛋白表达水平均下降,以Bcl-2蛋白表达水平下降更为明显,与对照组比较,100和200 mg•L-1 五味子提取物组Bcl-2蛋白表达水平明显下降(P<0.05或P<0.01);与对照组比较,不同浓度五味子提取物组Bax/Bcl-2值均升高(P<0.05或P<0.01),50 mg•L-1 五味子提取物组培养上清中caspase-3蛋白水平较对照组明显升高(P<0.01)。结论:五味子提取物可能是通过上调Bax/Bcl-2值后促凋亡因素占优势,使神经球细胞凋亡而抑制胶质瘤神经球细胞的生长。

关键词: 五味子, 胶质瘤, 神经球, Bax蛋白, Bcl-2蛋白, caspase-3蛋白

Abstract:

Abstract:Objective
To explore the effect of Schisandra chinensis extract on neurospheres of glioma and to study the possible mechanism of inhibition.Methods Glioma SHG-44 cells were cultured in stem cells media (containing neurobasal media supplemented with B27,EGF and bFGF) and the neuroshperes were used in this experiment after 3 passages.Neurospheres were cultured and divided into control,50,100 and 200 mg•L-1  Schisandra chinensis extract groups.The influence of Schisandra chinensis extract in proliferation of neuroshperes was measured by MTT assay.The levels of Bcl-2,Bax and caspase-3 proteins were measured by ELISA. Results  Compared with control group,the inhibitory rates of proliferation of neurospheres in 50,100 and 200 mg•L-1  Schisandra chinensis extract groups were significantly decreased after treated for 24,48 and 72 h (P<0.01). The ELISA results showed that compared with control group,the secretion of Bcl-2 and Bax protein was decreased,especially the levels of Bcl-2 protein in 100 and 200 mg•L-1  Schisandra chinensis extract groups (P<0.05 or P<0.01);compared with control group,the ratios of Bax/Bcl-2 in 50,100 and 200 mg•L-1  Schisandra chinensis extract groups were increased (P<0.01).Compared with respective control group,the expression of caspase-3 protein in 50 mg•L-1  group was significantly increased (P<0.01).Conclusion Schisandra chinensis extracts might up-regulate the ratio of Bax/Bcl-2 and promote the secretion of apoptosis factors to induce the apoptosis and inhibit the growth of glioma neuroshperes.

Key words: Schisandra chinensis, glioma, neuroshpere, bax protein, bcl-2 protein, caspase-3 protein

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