Metalloproteases Cleave the Urokinase-Type Plasminogen Activator Receptor in the D1-D2 Linker Region and Expose Epitopes not Present in the intact Soluble Receptor

Abstract excerpt

Proteolytic cleavage of the urokinase plasminogen activator receptor (uPA(R)) prevents the binding of uPA and vitronectin while generating biologically active uPAR fragments. We have recently shown that matrix metalloproteinase-12 (MMP-12) releases cellular uPAR-antigen from stimulated human micro-vascular endothelial cells providing a novel feedback mechanism between the plasminogen activation and MMP systems....

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