基础医学与临床 ›› 2012, Vol. 32 ›› Issue (3): 317-321.

• 研究论文 • 上一篇    下一篇

肺癌细胞低氧干预后DLL4的表达及其对内皮细胞迁移的影响

韩建群1,秦伟伟1,李宏伟2,修瑞娟2   

  1. 1. 中国医学科学院微循环研究所
    2. 中国医学科学院北京协和医学院微循环研究所
  • 收稿日期:2011-12-05 修回日期:2011-12-26 出版日期:2012-03-05 发布日期:2012-02-27
  • 通讯作者: 修瑞娟 E-mail:xiurj@yahoo.com.cn
  • 基金资助:
    北京协和青年基金

Expression of DLL4 in cobalt chloride treated A549 cells and its influence on migration of endothelial cells

  • Received:2011-12-05 Revised:2011-12-26 Online:2012-03-05 Published:2012-02-27
  • Contact: Rui-juan XIU E-mail:xiurj@yahoo.com.cn

摘要: 摘要:目的 探讨氯化钴化学模拟低氧对肺癌细胞DLL4(delta like ligand 4)表达的影响及其与内皮细胞迁移的关系,为寻找抗肿瘤血管新生的潜在靶点提供理论依据。方法 EdU掺入法测定细胞增殖变化;采用免疫荧光细胞染色和western-blot测定DLL4和 HIF-1α(hypoxia induced factor 1α)在A549细胞中的表达;细胞划痕实验检测内皮细胞的迁移变化。结果 低浓度氯化钴(200 μmol/L )化学模拟低氧干预12小时后,A549细胞增殖没有明显抑制,DLL4和 HIF-1α的表达均明显上调,培养上清液促进细胞划痕实验中内皮细胞的迁移。结论 化学模拟低氧明显上调A549细胞DLL4的表达,其对内皮细胞的迁移趋化作用提示其为抗肿瘤血管新生治疗的潜在靶点。

关键词: 肺癌, DLL4, 内皮细胞迁移

Abstract: Abstract: Objective To explore the expression of DLL4 in A549 after CoCl2 treatment and elucidate the relationship between hypoxia induced factor-1α (HIF-1α) and delta like legend 4 (DLL4). Migration of endothelial cells in the condition of cancer culture supernatant was also observed. Methods Cell proliferation was detected by EdU incorporation assay. Expression of DLL4 and HIF-1α were detected by immunofluorescence staining and western-blot. Migration of endothelial cells was measured in a cell scratch wound model. Results The viability and proliferation of A549 were not significantly decreased after the CoCl2 (200 μmol/L) treatment. Expression of HIF-1α and DLL4 were increased in A549 after CoCl2 treatment compared to normal condition. Culture supernatant from CoCl2 treated A549 could enhance the migration of endothelial cells. Conclusion HIF-1α and DLL4 could be stimulated under hypoxic condition in A549. A549 in hypoxic condition can trigger the migration of endothelial cells, which is critical to angiogenesis. DLL4 might participate in tumor angiogenesis and it is a promising target in tumor treatment.

Key words: lung cancer, DLL4, migration of endothelial cell

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