Urokinase-type plasminogen activator (uPA) and its inhibitor plasminogen activator inhibitor type 1 (PAI-1) play a key role in tumor-associated processes such as the degradation of extracellular matrix proteins, tissue remodeling, cell adhesion, migration, and invasion. High antigen levels of uPA and PAI-1 in tumor tissue of various solid malignant tumors, including breast cancer, are associated with poor patient prognosis. Quantitative real-time PCR (QPCR) assays based on the LightCycler technology were established to quantify uPA and PAI-1 mRNA expression in (breast cancer) cell lines as well as in tumor tissue of breast cancer patients, and was examined as a potential alternative to the measurement of the respective antigen levels. In conclusion, the implementation of mRNA quantification of uPA and PAI-1 in breast tumors is unable to serve as a one-to-one substitution for antigen determination by ELISA.
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Urokinase-type plasminogen activator (uPA) and its inhibitor plasminogen activator inhibitor type 1 (PAI-1) play a key role in tumor-associated processes such as the degradation of extracellular matrix proteins, tissue remodeling, cell adhesion, migration, and invasion. High antigen levels of uPA and PAI-1 in tumor tissue of various solid malignant tumors, including breast cancer, are associated with poor patient prognosis. Quantitative real-time PCR (QPCR) assays based on the LightCycler techno...
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