Anti-VEGF/VEGFA Antibody Picoband® Fluoro488 Conjugated

VEGF, a homodimeric glycoprotein of relative molecular mass 45,000, is the only mitogen that specifically acts on endothelial cells. It may be a major regulator of tumor angiogenesis in vivo. It is, however, structurally related to platelet-derived growth factor. VEGF shares homology with the PDGF A chain and B chain, including conservation of all 8 cysteines found in PDGFA and PDGFB. VEGF gene contains 8 exons. VEGF induces remodeling and enhances TH2-mediated sensitization and inflammation in the lung. And this gene also can regulate haematopoietic stem cell survival by an internal autocrine loop mechanism. What’s more, it also stimulates neurogenesis in vitro and in vivo.

E.coli-derived human VEGF recombinant protein (Position: A27-R191) . Human VEGF shares 78% amino acid (aa) sequence identity with both mouse and rat VEGF.

Isoform VEGF189, isoform VEGF165 and isoform VEGF121 are widely expressed. Isoform VEGF206 and isoform VEGF145 are not widely expressed. A higher level expression seen in pituitary tumors as compared to the pituitary gland. .

Angiogenesis, Cancer, Cancer Metabolism, Cardiovascular, Growth Factors, Growth Factors/Hormones, Metabolism, Metabolism Processes, Pathways and Processes, Response To Hypoxia, Signal Transduction

Growth factor active in angiogenesis, vasculogenesis and endothelial cell growth. Induces endothelial cell proliferation, promotes cell migration, inhibits apoptosis and induces permeabilization of blood vessels. Binds to the FLT1/VEGFR1 and KDR/VEGFR2 receptors, heparan sulfate and heparin. NRP1/Neuropilin-1 binds isoforms VEGF-165 and VEGF-145. Isoform VEGF165B binds to KDR but does not activate downstream signaling pathways, does not activate angiogenesis and inhibits tumor growth. .

1. Lee, C. G.; Link, H.; Baluk, P.; Homer, R. J.; Chapoval, S.; Bhandari, V.; Kang, M. J.; Cohn, L.; Kim, Y. K.; McDonald, D. M.; Elias, J. A. : Vascular endothelial growth factor (VEGF) induces remodeling and enhances TH2-mediated sensitization and inflammation in the lung. Nature Med. 10: 1095-1103, 2004. 2. Gerber, H.-P.; Malik, A. K.; Solar, G. P.; Sherman, D.; Liang, X. H.; Meng, G.; Hong, K.; Marsters, J. C.; Ferrara, N. : VEGF regulates haematopoietic stem cell survival by an internal autocrine loop mechanism. Nature 417: 954-958, 2002. 3. Jin, K.; Zhu, Y.; Sun, Y.; Mao, X. O.; Xie, L.; Greenberg, D. A. : Vascular endothelial growth factor (VEGF) stimulates neurogenesis in vitro and in vivo. Proc. Nat. Acad. Sci. 99: 11946-11950, 2002.

Secreted . VEGF121 is acidic and freely secreted. VEGF165 is more basic, has heparin-binding properties and, although a signicant proportion remains cell-associated, most is freely secreted. VEGF189 is very basic, it is cell-associated after secretion and is bound avidly by heparin and the extracellular matrix, although it may be released as a soluble form by heparin, heparinase or plasmin.