Antiangiogenic proteins require plasma fibronectin or vitronectin for in vivo activity

Ming Yi, Takao Sakai, Reinhard Fässler, Erkki Ruoslahti

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)


Fragmentation of various extracellular matrix and blood proteins generates antiangiogenic substances that are physiological regulators of angiogenesis. Some of these compounds are in clinical trials as inhibitors of tumor angiogenesis. Anastellin, an antiangiogenic protein fragment derived from fibronectin, was unable to inhibit matrigel plug angiogenesis in mice that lack plasma fibronectin. Anastellin was fully active in mice that are null for vitronectin, which, like fibronectin, is a major adhesion protein in the blood. An antiangiogenic form of antithrombin showed the opposite pattern. The activity of endostatin was impaired in both fibronectin- and vitronectin-deficient mice. These results suggest a shared mechanism of action for antiangiogenic factors derived from extracellular matrix and plasma proteins: these factors form complexes with adhesion proteins in plasma to create an active antiangiogenic substance.

Original languageEnglish
Pages (from-to)11435-11438
Number of pages4
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number20
Publication statusPublished - 30-09-2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General


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