Vascular endothelial growth factor (VEGF) receptor-2 signaling mediates VEGF-C(deltaNdeltaC)- and VEGF-A-induced angiogenesis in vitro.

Authors: Tille, JC  Wang, X  Lipson, KE  McMahon, G  Ferrara, N  Zhu, Z  Hicklin, DJ  Sleeman, JP  Eriksson, U  Alitalo, K  Pepper, MS 
Citation: Tille JC, etal., Exp Cell Res. 2003 May 1;285(2):286-98.
Pubmed: (View Article at PubMed) PMID:12706123

Angiogenesis and lymphangiogenesis are regulated by members of the vascular endothelial growth factor (VEGF) family of cytokines, which mediate their effects via tyrosine kinase VEGF receptors -1, -2, and -3. We have used wild-type and mutant forms of VEGFs -A, -B, and -C, a pan-VEGFR tyrosine kinase inhibitor (SU5416) as well as neutralizing anti-VEGFR-2 antibodies, to determine which VEGF receptor(s) are required for bovine endothelial cell invasion and tube formation in vitro. This was compared to the ability of these cytokines to induce expression of members of the plasminogen activator (PA)-plasmin system. We found that cytokines which bind VEGFR-2 (human VEGF-A, human VFM23A, human VEGF-C(deltaNdeltaC), and rat VEGF-C(152)) induced invasion, tube formation, urokinase-type-PA, tissue-type-PA, and PA inhibitor-1, invasion and tube formation as well as signaling via the MAP kinase pathway were efficiently blocked by SU5416 and anti-VEGFR-2 antibodies. In contrast, cytokines and mutants which exclusively bind VEGFR-1 (human VFM17 and human VEGF-B) had no effect on invasion and tube formation or on the regulation of gene expression. We were unable to identify cytokines which selectively stimulate bovine VEGFR-3 in our system. Taken together, these findings point to the central role of VEGFR-2 in the angiogenic signaling pathways induced by VEGF-C(deltaNdeltaC) and VEGF-A.

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CRRD Object Information
CRRD ID: 1580593
Created: 2006-08-14
Species: All species
Last Modified: 2006-08-14
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.