Vascular smooth muscle cell growth-promoting factor/F-spondin inhibits angiogenesis via the blockade of integrin αvβ3 on vascular endothelial cells

Yoshito Terai, Mayumi Abe, Kaoru Miyamoto, Masamichi Koike, Motoo Yamasaki, Masatsugu Ueda, Minoru Ueki, Yasufumi Sato

研究成果: Article査読

45 被引用数 (Scopus)

抄録

Vascular smooth muscle cell growth-promoting factor (VSGP) was originally isolated from bovine ovarian follicular fluid as a stimulator of vascular smooth muscle cell proliferation. Homology searches indicate that bovine and human VSGPs are orthologs of rat F-spondin. Here, we examined whether recombinant human VSGP/F-spondin affected the biological activities of endothelial cells. VSGP/F-spondin did not affect the proliferation of human umbilical vein endothelial cells (HUVECs); however, it did inhibit VEGF- or bFGF-stimulated HUVEC migration. To clarify the mechanism of this inhibitory effect, we examined the adhesion of HUVECs to extracellular matrix proteins. VSGP/F-spondin specifically inhibited the spreading of HUVECs on vitronectin via the functional blockade of integrin αvβ3. As a result, VSGP/F-spondin inhibited the tyrosine phosphorylation of focal adhesion kinase (FAK) when HUVECs were plated on vitronectin. Moreover, VSGP/F-spondin inhibited the activation of Akt when HUVECs on vitronectin were stimulated with VEGF. VSGP/F-spondin inhibited tube formation by HUVECs in vitro and neovascularization in the rat cornea in vivo. These results indicate that VSGP/F-spondin inhibits angiogenesis at least in part by the blockade of endothelial integrin αvβ3.

本文言語English
ページ(範囲)394-402
ページ数9
ジャーナルJournal of Cellular Physiology
188
3
DOI
出版ステータスPublished - 2001

ASJC Scopus subject areas

  • Physiology
  • Clinical Biochemistry
  • Cell Biology

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