METHOD FOR INHIBITING ANGIOGENESIS USING MOLECULES THAT ENHANCE PLASMIN FORMATION OR PROLONG PLASMIN ACTIVITY

摘要

Angiogenesis, the generation of new blood vessels, is a complex process that is controlled by a multitude of factors such as the extracellular matrix, components of the blood clotting system and angiogenic factors. The formation of blood vessels is accompanied by the formation of a so-called provisional matrix. Endothelial cells use the provisional matrix, among others, as a substrate for adhesion, migration and invasion. The provisional matrix is continuously build up and broken down until the new vessel is properly formed. This remodeling of the provisional matrix is regulated by the balanced action of various proteins. A key protein in the remodeling of the provisional matrix is the serine protease plasmin. The present invention provides means and methods based on proteinaceous molecules that enhance or sustain levels of plasmin near or at the site of unwanted angiogenesis through activation off plasminogen through tissue plasminogen activator. Through the means and methods of the invention the remodeling process of the provisional matrix can be tailored toward specific needs.