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Old Dogs and New Tricks, Proteases, Inhibitors, and Cell Migration

A new model for the actions of plasminogen activator inhibitors (PAIs) on cell migration may resolve the conflicting research data on these proteins in metastasis and angiogenesis. Results from two groups reveal a role for PAI-1 in promoting cycles of attachment and detachment of the cell from the extracellular matrix that is independent of its role as an enzymatic inhibitor of urokinase-type plasminogen activator (uPA). Through the formation of a complex of integrins, uPA and its receptor, and the clearance receptors of the low-density lipoprotein family, PAI-1 may promote endocytosis and recycling of these adhesion-controlling proteins, allowing cycling of cellular attachment and detachment.

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Classifications


Resource Type: Diagram, Illustration, Journal article/Issue, Review
Audience Level: Undergraduate upper division 15-16, Graduate, Professional (degree program)

Author and Copyright


Authors and Editors: Steingrimur Stefansson of Vascular Biology Department, American Red Cross, Daniel A. Lawrence of Jerome H. Holland Laboratory for the Biomedical Sciences, American Red Cross
Publisher: American Association for the Advancement of Science
Format: application/pdf, image/gif, image/jpeg, text/html
Copyright and other restrictions: Yes
Cost: Yes

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Collection:
STKE/Science Signaling


     
   

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