Blockade of vascular endothelial growth factor receptor-3 signaling inhibits fibroblast growth factor-2-induced lymphangiogenesis in mouse cornea

Proc Natl Acad Sci U S A. 2002 Jun 25;99(13):8868-73. doi: 10.1073/pnas.062040199. Epub 2002 Jun 17.

Abstract

Vascular endothelial growth factor receptor-3 (VEGFR-3) is a major mediator of lymphangiogenesis. Recently, VEGFR-3 ligands, VEGF-C, and VEGF-D were reported to promote tumor lymphangiogenesis and lymphatic metastasis, and these processes were inhibited by blocking of the VEGFR-3-signaling pathway. Here, we have adapted the mouse corneal angiogenesis assay to study potential lymphangiogenic factors and inhibitors. Immunohistochemical analysis with lymphatic endothelial markers showed that VEGF-C induces lymphatic as well as blood vessel growth in the cornea. By contrast, VEGF induced angiogenesis but not lymphangiogenesis. Fibroblast growth factor-2 (FGF-2) stimulated both lymphangiogenesis and angiogenesis. FGF-2 up-regulated VEGF-C expression in vascular endothelial and perivascular cells. Furthermore, administration of blocking anti-VEGFR-3 antibodies inhibited the FGF-2-induced lymphangiogenesis. These findings show that VEGFR-3 can mediate lymphangiogenesis induced by other growth factors. Because increased expression of FGF-2 and VEGF-C has been associated with lymphatic metastasis, our results provide a potential strategy for the inhibition of lymphatic metastasis in cancer therapy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cornea / growth & development*
  • Fibroblast Growth Factor 2 / physiology*
  • Lymphatic System / growth & development*
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Neutralization Tests
  • Receptor Protein-Tyrosine Kinases / antagonists & inhibitors*
  • Receptor Protein-Tyrosine Kinases / immunology
  • Receptor Protein-Tyrosine Kinases / metabolism
  • Receptors, Growth Factor / antagonists & inhibitors*
  • Receptors, Growth Factor / immunology
  • Receptors, Growth Factor / metabolism
  • Signal Transduction*
  • Vascular Endothelial Growth Factor Receptor-3

Substances

  • Receptors, Growth Factor
  • Fibroblast Growth Factor 2
  • Receptor Protein-Tyrosine Kinases
  • Vascular Endothelial Growth Factor Receptor-3