VEGF-B human

VEGFB (vascular endothelial growth factor B) is encoded by the gene mapped to human chromosome 11q13. The encoded protein is one of the seven members of the VEGF family, which also includes VEGF-A, VEGF-C, VEGF-D, VEGF-E, VEGF-F, and PIGF (placental growth factor). All these members contain a common VEGF homology domain. This domain forms the core region and contains a cystine knot motif composed of eight invariant cysteine residues. VEGFB, discovered in 1995, is highly expressed in adult myocardium, skeletal muscle, and pancreas. This gene contains seven exons and alternative splicing results in the synthesis of two isoforms, VEGF-B167 and VEGF-B186, with molecular weight of 21kDa and 32kDa, respectively. These isoforms show differential level of expression, with VEGF-B167 being the predominantly expressed isoform.

VEGFB (vascular endothelial growth factor B) acts on the receptors VEGFR-1 (VEGF receptor) and NRP-1 (neuropilin). This protein induces coronary vessel growth and cardiac hypertrophy, which might confer protection to heart against ischemic damage and heart failure. It might have a role in metabolic functions as it shows high expression levels in tissues with highly active energy metabolism. VEGFB is also thought to be involved in neuroprotection. This protein is involved in fetal angiogenesis, functions as a mitogen for endothelial cells (ECs), survival factor for multiple types of cells such as neurons, vascular cells and myocytes.

Lyophilized from 0.22 μm filtered solution in PBS. Generally 5-8% Mannitol or trehalose is added as a protectant before lyophilization.

Centrifuge the vial prior to opening. Reconstitute in sterile PBS, pH 7.4 to a concentration of 50 μg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 month. For extended storage, it is recommended to store at -20°C.