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Updated: Jun 2, 2026
12:42
Heterotypic Three-dimensional In Vitro Modeling of Stromal-Epithelial Interactions During Ovarian Cancer Initiation and Progression
Published on: August 28, 2012
Proteases associated with gynecological tumors
C Ruppert1, S Ehrenforth, B Tutschek
1UNIV FRANKFURT,CTR INTERNAL MED,DEPT ANGIOL,D-60596 FRANKFURT,GERMANY.
International Journal of Oncology
|May 14, 2011
Summary
Tumor proteases like urokinase plasminogen activator (uPA) and plasminogen activator inhibitor-1 (PAI-1) are elevated in malignant tissues, offering potential prognostic markers. Tissue plasminogen activator (tPA) in breast cancer correlates with a better prognosis.
Area of Science:
- Oncology
- Biochemistry
- Molecular Biology
Background:
- Proteases play a crucial role in tumor invasion and metastasis by degrading extracellular matrix.
- Tumor-associated protease levels have significant prognostic and therapeutic implications.
Purpose of the Study:
- To investigate the levels of urokinase plasminogen activator (uPA), tissue plasminogen activator (tPA), and plasminogen activator inhibitor-1 (PAI-1) in malignant versus non-malignant tissues.
- To explore the correlation of these proteases with other prognostic factors like estrogen receptor (ER), progesterone receptor (PrgR), and epidermal growth factor receptors (EGFR).
Main Methods:
- Analysis of 318 frozen tumor samples and corresponding non-malignant tissues.
- Quantification of uPA, tPA, and PAI-1 using Enzyme-Linked Immunosorbent Assay (ELISA).
- Measurement of cathepsin D via Radioimmunoassay (RIA) and ER, PrgR, EGFR by biochemical assays.
Main Results:
- Significantly elevated levels of uPA, PAI-1, and cathepsin D were observed in malignant tissues.
- PAI-1 levels were particularly high in cervical carcinoma.
- Increased tPA levels in breast cancer tissue were associated with a more favorable clinical prognosis and positively correlated with ER levels.
Conclusions:
- Routine estimation of tumor-associated proteases (uPA, tPA, PAI-1, cathepsin D) may serve as independent prognostic markers.
- These markers could aid therapeutic decisions for gynecological tumors and breast cancer.
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