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- 2015
肿瘤坏死因子α调节乳腺癌SK-BR-3细胞中KLF4表达及其机制研究DOI: 10.3971/j.issn.1000-8578.2015.02.004 Keywords: 肿瘤坏死因子&alpha,乳腺癌SK-BR-3细胞,Krü,ppel样因子4,凋亡,Immune Killing Effect of Silencing TIPE2 Expression on T Lymphocytes Against Lung Adenocarcinoma Cells LA795,Effects of Gastrodin on Expression of IL-1β and TNFα of Spinal Cord in Chemotherapy-induced Neuropathic Pain,Inhibitory Effects on HepG2 Cells from Genetic Engineering Cells Secreted Tumor Necrosis Factor,Synergistic Activity of TNF-a with Superoxide Anion,SOD or Hydroxyl Radical on Human bladder Cancer Abstract: 摘要 目的 探讨肿瘤坏死因子α(TNFα)对乳腺癌SK-BR-3细胞中Krüppel样因子4(KLF4)表达的影响,明确KLF4在促进乳腺癌SK-BR-3细胞凋亡中的作用机制。方法 用不同浓度TNFα(0、1、5、10、20 ng/mL)刺激乳腺癌SK-BR-3细胞,采用Western blot法检测KLF4表达水平;用流式细胞术和DAPI染色法分析细胞凋亡情况。结果 随着刺激浓度的增高,KLF4表达水平呈剂量依赖性逐渐增多。流式细胞术和DAPI染色显示,TNFα可诱导乳腺癌SK-BR-3细胞凋亡。构建pAd-GFP和pAd-GFPKLF4腺病毒表达载体,在乳腺癌SK-BR-3细胞中过表达GFP或GFP-KLF4,再给予TNFα刺激后,流式细胞术观察结果显示,KLF4过表达可促进乳腺癌SK-BR-3细胞凋亡。结论 TNFα可诱导乳腺癌SKBR- 3细胞中KLF4表达,KLF4参与了TNFα诱导的乳腺癌SK-BR-3细胞凋亡过程
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