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-  2016 

莱菔硫烷抑制肺癌干细胞增殖的体外实验

DOI: 10.3971/j.issn.1000-8578.2016.07.003

Keywords: A Meta-analysis,Effect of Rap2a on Invasion and Metastasis of Lung Cancer Cells and Its Related Mechanism,Immune Killing Effect of Silencing TIPE2 Expression on T Lymphocytes Against Lung Adenocarcinoma Cells LA795,NSCLC的疫苗治疗研究进展,Experiment of Different Administration Sequences of Apatinib and Paclitaxel on Lung Cancer,Expressions of MACC1 and c-Met Proteins in Lung Adenocarcinoma and Their Correlation with Postoperative Recurrence,Cryptotanshinone Promotes Apoptosis of A549 Cells via Inhibiting Cap-dependent mRNA Translation,Clinical Investigation on Qingfei Mixture Combined with Chemotherapy on Middle and Advanced Non-small Cell Lung Cancer,Effect of Vascular Endothelial Cadherin on Invasion and Metastasis of Non-small Cell Lung Cancer Cells and Related Mechanism

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Abstract:

摘要 目的 研究莱菔硫烷(sulforaphane, SFN)对肺癌干细胞增殖的影响及其机制。方法 采用MTT法分析SFN对H460细胞增殖的影响;应用流式细胞术(FACS)检测SFN对细胞凋亡和侧群细胞比例的影响;肿瘤球培养法分析SFN对肿瘤球生长的影响;使用shRNA慢病毒载体构建β-catenin低表达细胞株,并应用蛋白电泳法检测在β-catenin正常或低表达情况下莱菔硫烷对β-catenin、Oct4、Sox2、c-Myc、Nanog等基因表达的影响。结果 SFN有效抑制H460细胞增殖,IC50为11.2 μmol/L。SFN处理72 h后,细胞凋亡呈剂量依赖性增高。SFN有效抑制原代肿瘤球和2代肿瘤球的生长,在较低浓度(1.0 μmol/L)下即有明显的抑制作用。FACS检测提示侧群细胞比例随SFN浓度增高而减少。SFN浓度依赖性地抑制β-catenin、Oct4、Sox2、c-Myc和Nanog等蛋白表达。在低表达β-catenin情况下,Oct4、Sox2、c-Myc、Nanog等基因表达水平与SFN浓度相关。结论 SFN通过β-catenin和干性相关基因(Sox2、c-Myc、Nanog和Oct4)特异地抑制肺癌干细胞的增殖

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