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Cancer Detect Prev. 2004;28(2):88-93.

Up-regulation of hypoxia-inducible factor 1alpha is an early event in prostate carcinogenesis.

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  • 1Department of Hematology and Oncology, Winship Cancer Institute, Emory University, 1365-B Clifton Road, N.E. Room B4328, Atlanta, GA 30322, USA. hua.zhong@emoryhealthcare.org

Abstract

Hypoxia-inducible factor 1 (HIF-1) activates the transcription of genes encoding glucose transporters, glycolytic enzymes, and vascular endothelial growth factor (VEGF). HIF-1alpha is a major subunit of HIF-1 heterodimer. In this study, an immunohistochemical analysis of HIF-1alpha was focused on clinical specimens containing high-grade prostate intraepithelial neoplasia lesions since high-grade prostate intraepithelial neoplasia is considered the precursor of a majority of invasive prostate adenocarcinoma and presents the increased activity of angiogenesis. HIF-1alpha was up-regulated in 11 of 14 high-grade prostate intraepithelial neoplasia lesions identified in a total 10 prostate biopsies relative to the respective normal epithelium, stromal cells, and benign prostatic hyperplasia (BPH). Moreover, up-regulation of HIF-1alpha in adjacent prostate cancer lesions was more enhanced than in high-grade prostate intraepithelial neoplasia. The results suggest that up-regulation of HIF-1alpha is an early event in prostate carcinogenesis, and that HIF-1alpha may become a potential target for prostate cancer prevention and a surrogate biomarker for monitoring pre-malignant lesions of the prostate.

PMID:
15068831
[PubMed - indexed for MEDLINE]
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