The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Determined by the dose-dependent stimulation of the proliferation of human umbilical vein endothelial cells (HUVEC) using a concentration range of 0.2-0.4 ng/ml.
% SDS-PAGE. ab50078 purity was determined also by HPLC
Endotoxin level is less than 0.1 ng per µg (1EU/µg).
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Preparation and Storage
Stability and Storage
Shipped at 4°C. The lyophilized protein is stable for a few weeks at room temperature. Store at -20°C long term.
This product is an active protein and may elicit a biological response in vivo, handle with caution.
ReconstitutionReconsitute to 1mg/ml in distilled water
vascular endothelial growth factor
Vascular endothelial growth factor A
Vascular permeability factor
FunctionGrowth 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.
Tissue specificityIsoform VEGF189, isoform VEGF165 and isoform VEGF121 are widely expressed. Isoform VEGF206 and isoform VEGF145 are not widely expressed.
Involvement in diseaseDefects in VEGFA are a cause of susceptibility to microvascular complications of diabetes type 1 (MVCD1) [MIM:603933]. These are pathological conditions that develop in numerous tissues and organs as a consequence of diabetes mellitus. They include diabetic retinopathy, diabetic nephropathy leading to end-stage renal disease, and diabetic neuropathy. Diabetic retinopathy remains the major cause of new-onset blindness among diabetic adults. It is characterized by vascular permeability and increased tissue ischemia and angiogenesis.
Sequence similaritiesBelongs to the PDGF/VEGF growth factor family.
Cellular localizationSecreted. 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.
References for Recombinant human VEGFA protein (ab50078)
This product has been referenced in:
Kim GI et al. Electrochemical detection of vascular endothelial growth factors (VEGFs) using VEGF antibody fragments modified Au NPs/ITO electrode. Biosens Bioelectron25:1717-22 (2010).
Read more (PubMed: 20047825) »