多药耐药细胞株A549/Gem 的建立<br /> 及其生物学特性研究

Journal Title: Chinese Journal of Lung Cancer - Year 2008, Vol 11, Issue 1

Abstract

肺癌是对人类健康和生命危害最大的恶性肿瘤。肺癌转移是肺癌的恶性标志和特征,也是肺癌病人治疗失败和死亡的主要原因。人参皂苷Rg3具有明显的抗肿瘤效应,该研究将应用双向凝胶电泳技术探讨人参皂苷Rg3抗肺癌侵袭转移分子作用机制。方法 筛选人参皂苷Rg3作用于人肺巨细胞癌高转移细胞株的半抑制浓度(IC50),用0.1倍半抑制浓度(0.1×C50)的Rg3溶液作用人肺巨细胞癌高转移细胞株95D 72 h,利用固相PH梯度双向凝胶电泳分离Rg3处理前后人肺巨细胞癌高转移细胞株95D的总蛋白,用图像分析软件比较分析Rg3处理前后细胞间的差异表达蛋白质。对15个差异表达的蛋白质点通过MALD-TOF-MS/MS,LC-MS/MS和蛋白质数据库检索进行鉴定。结果 人参皂苷Rg3作用人肺巨细胞癌高转移细胞株95D的半抑制浓度为100 μg/ml。有12个蛋白点仅在对照组细胞株中出现,有6个蛋白点仅在药物处理组出现;在对照组与药物处理组中都存在,但在对照组中高表达的蛋白点有7个,在药物处理组中高表达的蛋白点有2个。通过对差异明显的15个蛋白质点进行质谱鉴定和蛋白质数据库查询,发现氯离子通道蛋白1(Chloride intracellular channel protein 1)、泛素结合酶E2-25 Kda(Ubiquitin-Conjugating Enzyme E2-25 Kda)等蛋白只在对照组有表达;14-3-3θ蛋白(14-3-3 protein theta)、Ski作用蛋白(SKI-interacting protein)只在药物处理组有表达;膜联蛋白A2(annexin A2)、肌动蛋白结合蛋白Ⅱ同构体b(profilin 2 isoform b)等蛋白在对照组的表达量显著高于药物处理组;14-3-3ζ蛋白(14-3-3 protein zeta),真核翻译起始因子4H(Eukaryotic translation initiation factor 4H )在药物处理组的表达量显著高于对照组。结论 该研究结果提示Rg3处理前后人肺巨细胞癌高转移细胞株蛋白质组的表达存在明显差异, 鉴定的差异蛋白质多与肿瘤的侵袭转移相关。这些差异蛋白质有可能为进一步发现与肺癌转移相关的分子标志物和阐明人参皂苷Rg3抗肺癌侵袭转移的分子作用机制提供线索。

Authors and Affiliations

Weixia WANG, Guangxian LIU, Li LIN, Xiaoling ZHENG, Yunfeng ZHU , Xiaobing LI , Xiaoqing LIU

Keywords

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多药耐药细胞株A549/Gem 的建立<br /> 及其生物学特性研究

肺癌是对人类健康和生命危害最大的恶性肿瘤。肺癌转移是肺癌的恶性标志和特征,也是肺癌病人治疗失败和死亡的主要原因。人参皂苷Rg3具有明显的抗肿瘤效应,该研究将应用双向凝胶电泳技术探讨人参皂苷Rg3抗肺癌侵袭转移分子作用机制。方法...

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  • EP ID EP84102
  • DOI 10.3779/j.issn.1009-3419.2008.01
  • Views 102
  • Downloads 0

How To Cite

Weixia WANG, Guangxian LIU, Li LIN, Xiaoling ZHENG, Yunfeng ZHU, Xiaobing LI, Xiaoqing LIU (2008). 多药耐药细胞株A549/Gem 的建立<br /> 及其生物学特性研究. Chinese Journal of Lung Cancer, 11(1), 55-61. https://europub.co.uk/articles/-A-84102