How Urokinase-Type Plasminogen Activator Affects Ovarian Cancer Cell Invasion
Author Information
Author(s): H. Kobayashi, H. Ohi, H. Shinohara, M. Sugimura, T. Fujii, T. Terao, M. Schmitt, L. Goretzki, N. Chucholowski, F. Jinicke, H. Graef
Primary Institution: Hamamatsu University School of Medicine
Hypothesis
Can saturation of urokinase-type plasminogen activator receptors inhibit ovarian cancer cell invasion?
Conclusion
Saturation of uPA receptors with inactive fragments significantly reduces the invasion of ovarian cancer cells.
Supporting Evidence
- Pro-uPA can bind to specific receptors on cancer cells, which are not fully saturated.
- Saturation of these receptors with inactive uPA fragments reduces cancer cell invasion.
- Experiments showed a dose-dependent inhibition of invasion with certain uPA polypeptides.
- Blocking invasion did not affect the cancer cells' ability to migrate towards chemoattractants.
Takeaway
This study shows that blocking certain receptors on cancer cells can stop them from invading other tissues.
Methodology
The study involved incubating pro-uPA with proteinases and assessing the invasion of ovarian cancer cells in vitro using reconstituted basement membranes.
Limitations
The study did not explore the effects of other proteinases that may also influence invasion.
Participant Demographics
The study used ovarian cancer cell line HOC-I derived from a recurrent region of ovarian endometrioid carcinoma.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
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