中国口腔颌面外科杂志 ›› 2017, Vol. 15 ›› Issue (2): 136-141.doi: 10.19438/j.cjoms.2017.02.008

• 论文 • 上一篇    下一篇

低氧激活HIF-1α诱导舌鳞癌细胞上皮-间质转化

吴泽键1, 周斌2, 陈伟生1, 吴晓平1, 黄志权2   

  1. 1.普宁市人民医院 口腔科,广东 普宁 515300;
    2.中山大学附属孙逸仙纪念医院 口腔颌面外科,广东 广州 510120
  • 收稿日期:2016-06-27 出版日期:2017-03-20 发布日期:2017-04-13
  • 通讯作者: 黄志权,E-mail:zhiquanhuang1978@126.com
  • 作者简介:吴泽键(1982-),男,学士,主治医师, E-mail:350455497@qq.com

Hypoxia induces epithelial-to-mesenchymal transition in human tongue squamous cell carcinoma via hypoxia inducible factor-1α

WU Ze-jian1, ZHOU Bin2, CHEN Wei-sheng1, WU Xiao-ping1, HUANG Zhi-quan2   

  1. 1.Department of Stomatology, People's Hospital of Puning City. Puning 515300;
    2.Department of Oral and Maxillofacial Surgery, Sun Yat-sen Memorial Hospital Affiliated to Sun Yat-sen University. Guangzhou 510120, Guangdong Province, China
  • Received:2016-06-27 Online:2017-03-20 Published:2017-04-13
  • Contact: 广东省自然科学基金(2016A030313348); 中央高校基本科研业务费专项资金(16ykjc17)

摘要: 目的:探讨低氧微环境诱导人舌鳞癌细胞上皮-间质转化以及HIF-1α在该过程中的作用。方法 体外常氧(20% O2)或低氧(1% O2)状态下培养舌鳞癌SCC9、CAL27细胞48 h,Western免疫印迹和实时定量PCR检测上皮间质标记蛋白vimentin、fibronectin和E-cadherin的表达变化和HIF-1α的表达水平,Transwell小室检测细胞的迁移能力。通过小干扰RNA(HIF-1α-Si)转染舌鳞癌细胞,检测HIF-1α、vimentin、fibronectin与E-cadherin蛋白表达以及细胞迁移能力的变化。应用SPSS13.0软件包对数据进行独立样本t检验。结果 人舌鳞癌细胞SCC9、CAL27在低氧环境中培养48 h后,间质标志蛋白vimentin和fibronectin在蛋白和mRNA水平均显著升高,上皮标志蛋白E-cadherin表达降低,HIF-1α表达上调,细胞迁移能力显著增强。小干扰RNA(siRNA)转染舌鳞癌细胞SCC9、CAL27并于低氧下培养后,HIF-1α表达显著降低,vimentin和fibronectin表达也显著降低,E-cadherin表达升高,细胞迁移能力显著下降。结论 低氧通过上调HIF-1α表达而促进人舌鳞癌细胞发生上皮-间质转化及转移。

关键词: 低氧, 舌鳞状细胞癌, 上皮-间质转化, 低氧诱导因子1α

Abstract: PURPOSE : To investigate the effect of hypoxia on epithelial-to-mesenchymal transition in human tongue squamous cell carcinoma (TSCC) and the role of HIF-1α in this process. METHODS : TSCC cell lines SCC9 and CAL27 were cultured under hypoxia (1% O2) or normoxia (20% O2) for 48 h. Western blot and qRT-PCR were used to detect expression of vimentin, fibronectin, E-cadherin and HIF-1α at protein and mRNA level, respectively. Transwell assay was used to detect cell invasion. After transfected HIF-1α with siRNA, HIF-1α, vimentin, fibronectin and E-cadherin expression, as well as invasion, were furthered detected in SCC9 and CAL27 cells. SPSS 13.0 software package was used for statistical analysis. RESULTS : Both SCC9 and CAL27 cells under hypoxia for 48 h showed upregulated vimentin and fibronectin, downregulated E-cadherin and upregulated HIF-1α expression, as well as increased invasion. After knocking down of HIF-1α with siRNA, HIF-1α, vimentin and fibronectin were significantly downregulated but E-cadherin was upregulated in SCC9 and CAL27 cells under hypoxia, with decreased invasion. CONCLUSION : Hypoxia induces epithelial-to-mesenchymal transition and metastasis of TSCC via upregulating HIF-1α.

Key words: Hypoxia, Tongue squamous cell carcinoma, Epithelial-to-mesenchymal transition, HIF-1α

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