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Heparanase-1 gene expression in normal, hyperplastic and neoplastic prostatic tissue.
S Stadlmann1, P L Moser, J Pollheimer
1Institute of Pathology, University of Innsbruck, Muellerstrasse 44, 6020 Innsbruck, Austria. sylvia.stadlmann@uibk.ac.at
European Journal of Cancer (Oxford, England : 1990)
|October 3, 2003
Summary
Heparanase-1 (Hpa-1) mRNA expression is common in normal prostate tissue but decreases with prostate cancer progression. Loss of Hpa-1 gene expression may indicate dedifferentiation in prostate cancer cells.
Area of Science:
- Oncology
- Molecular Biology
- Urology
Background:
- Heparanase-1 (Hpa-1) is linked to tumor invasion and metastasis.
- Understanding Hpa-1's role in prostate cancer is crucial for diagnosis and treatment.
Purpose of the Study:
- To investigate the clinicopathological significance of Hpa-1 mRNA expression in prostate cancer.
- To analyze Hpa-1 mRNA expression in both cancerous and non-cancerous prostate tissues.
Main Methods:
- One-step polymerase chain reaction (PCR) on laser microdissected prostatic gland cells.
- In situ hybridization for cell type-specific Hpa-1 mRNA expression analysis.
Main Results:
- Hpa-1 mRNA was detected in 50% of normal and 40% of hyperplastic prostate tissues.
- 42% of prostate carcinomas tested were positive for Hpa-1 mRNA.
- Hpa-1 mRNA expression was significantly higher in non-cancerous tissue compared to invasive cancers (P<0.05).
- Hpa-1 mRNA expression correlated with tumor differentiation and stage (P<0.05).
Conclusions:
- Hpa-1 gene expression may be lost during the dedifferentiation of prostate gland cells.
- Reduced Hpa-1 expression in tumors suggests a potential role in prostate cancer progression.