The urokinase plasminogen activator and its receptor

Summary

The urinary-type plasminogen activator, or uPA, controls matrix degradation through the conversion of plasminogen into plasmin and is regarded as the critical trigger for plasmin generation during cell migration and invasion, under physiological and pathological conditions (such as cancer metastasis).The proteolytic activity of uPA is responsible for the activation or release of several growth factors and modulates the cell survival/apoptosis ratio through the dynamic control of cell-matrix contacts. The urokinase receptor (uPAR), binding to the EGF-like domain of uPA, directs membrane-associated extracellular proteolysis and signals through transmembrane proteins, thus regulating cell migration, adhesion and cytoskeletal status. However, recent evidence highlights an intricate relationship linking the uPA/uPAR system to cell growth and apoptosis.

Keywords

Urokinase - urokinase receptor - cell proliferation - tumour progression - apoptosis

• References

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