Roles for hypoxia-regulated genes during cervical carcinogenesis: Somatic evolution during the hypoxia-glycolysis-acidosis sequence

Wen Ying Lee, Soon Cen Huang, Keng Fu Hsu, Ching Cherng Tzeng, Wan Lin Shen

研究成果: Article

48 引文 斯高帕斯(Scopus)

摘要

Objectives.: Malignant phenotypic traits are caused by microenvironmental selection pressures during carcinogenesis. Hypoxia can drive a tumor toward a more aggressive malignant phenotype. The objective was to better understand the role of the hypoxia-regulated genes in cervical carcinogenesis. Methods.: We analyzed the expression of the hypoxia-regulated genes, including hypoxia-inducible factor-1α (HIF-1α), erythropoietin (Epo), vascular endothelial growth factor (VEGF), glucose transporter 1 (GLUT1), carbonic anhydrase IX (CAIX), and MET, in cervical cell lines and human tissue samples of cervical intraepithelial neoplasia (CIN I-III) and invasive squamous cell carcinoma (ISCC). Results.: CAIX and MET were expressed in cervical carcinoma cell lines, but not in normal or human papillomavirus-immortalized cervical cells. In clinical tissue samples, Epo, VEGF, GLUT1, and CAIX were not detected in normal squamous epithelia. GLUT1 was expressed in nearly all cases of CIN and ISCC, however, CAIX was expressed only in CIN III and ISCC. HIF-1α and MET expression was confined to the basal cells in normal squamous epithelia and was detected in the dysplastic cells of CIN and ISCC. Conclusions.: The role of HIF-1α and MET changes from response to proliferation to tumor progression during cervical carcinogenesis. GLUT1 expression, a glycolytic phenotype adaptive to glycolysis, occurs early during cervical carcinogenesis and is a specific marker for dysplasia or carcinoma. MET and CAIX may contribute tumor progression in later stage. CAIX expression, an acid-resistant phenotype, may be a powerful adaptive advantage during carcinogenesis. Successful adaptation to the hypoxia-glycolysis-acidosis sequence in a microenvironment is crucial during carcinogenesis.

原文English
頁(從 - 到)377-384
頁數8
期刊Gynecologic oncology
108
發行號2
DOIs
出版狀態Published - 2008 二月 1

    指紋

All Science Journal Classification (ASJC) codes

  • Oncology
  • Obstetrics and Gynaecology

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