Growth Factors
Product List
VEGF E (Orf Virus)
Vascular Endothelial Growth Factor-E Recombinant (Orf Virus)
VEGF Equine
Vascular Endothelial Growth Factor Equine Recombinant
VEGF Equine Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 2 x 165 amino acids and having a total molecular mass of 38.6 kDa.
The VEGF is purified by proprietary chromatographic techniques.
Escherichia Coli.
VEGF Human
Vascular Endothelial Growth Factor Human Recombinant
The VEGF is purified by proprietary chromatographic techniques.
VEGF Human (121 a.a.), His
Vascular Endothelial Growth Factor-121 Human Recombinant, His Tag
The VEGF-121 is fused to a 20 amino acid His tag at N-terminus and purified by proprietary chromatographic techniques.
VEGF Human, Baculovirus
Vascular Endothelial Growth Factor Human Recombinant, Baculovirus
VEGF produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 171 amino acids (27-191 a.a.) and having a molecular mass of 19.9 kDa.
VEGF is expressed with a 6 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.
VEGF Human, CHO
Vascular Endothelial Growth Factor Human Recombinant, CHO
The VEGF is purified by proprietary chromatographic techniques.
VEGF Human, HEK
Vascular Endothelial Growth Factor Human Recombinant, HEK
VEGF Human, His
Vascular Endothelial Growth Factor Human Recombinant, His
The VEGF is fused to a 20 a.a His-tag at N-terminus and is purified by proprietary chromatographic techniques.
VEGF Human, Plant
Vascular Endothelial Growth Factor Human Recombinant, Plant
Vascular Endothelial Growth Factor Human Recombinant produced in Oryza Sativa has a molecular mass of 19.2kDa. The VEGF is purified by proprietary chromatographic techniques.
Rice Grain
VEGF Human, Yeast
Vascular Endothelial Growth Factor Human Recombinant, Yeast
Introduction
Vascular Endothelial Growth Factor (VEGF) is a signal protein produced by many cells that stimulates the formation of blood vessels. It is a sub-family of growth factors, specifically the platelet-derived growth factor family of cystine-knot growth factors . The VEGF family in mammals comprises five members: VEGF-A, VEGF-B, VEGF-C, VEGF-D, and Placenta Growth Factor (PGF) . Additionally, VEGF-related proteins encoded by viruses (VEGF-E) and in the venom of some snakes (VEGF-F) have also been discovered .
VEGF proteins are crucial signaling molecules involved in vasculogenesis (the formation of the embryonic circulatory system) and angiogenesis (the growth of blood vessels from pre-existing vasculature) . They are expressed in various tissues, particularly in vascularized tissues . VEGF is also involved in the formation of new blood vessels during embryonic development, after injury, and in muscles following exercise . The expression of VEGF is regulated by factors such as oxygen tension, cytokines, and differentiation .
The primary function of VEGF is to promote the growth of new blood vessels. It plays a critical role in embryonic development, wound healing, and the formation of collateral circulation to bypass blocked vessels . VEGF is also involved in immune responses by being chemotactic for granulocytes and macrophages . It contributes to pathological conditions such as tumor growth and metastasis, as well as vascular diseases in the retina .
VEGF exerts its effects by binding to tyrosine kinase receptors (VEGFRs) on the cell surface, leading to receptor dimerization and activation through transphosphorylation . The primary receptors for VEGF are VEGFR-1 (Flt-1) and VEGFR-2 (KDR/Flk-1) . These receptors activate downstream signaling cascades that promote endothelial cell proliferation, migration, and survival . VEGF also interacts with co-receptors such as neuropilins, which modulate its activity .
The expression and activity of VEGF are tightly regulated at multiple levels. Transcriptional regulation is influenced by oxygen levels, with hypoxia being a major inducer of VEGF gene transcription . Other regulatory factors include growth factors, hormones, and oncogenes . Post-translational modifications, such as phosphorylation, also play a role in modulating VEGF activity . Additionally, VEGF signaling is regulated by the availability of its receptors and the presence of co-receptors .
VEGF has significant applications in biomedical research, diagnostics, and therapeutics. In research, recombinant VEGF proteins are used to study angiogenesis and related signaling pathways . Clinically, VEGF inhibitors such as bevacizumab (Avastin) are used to treat cancers by inhibiting tumor angiogenesis . VEGF is also targeted in therapies for age-related macular degeneration and diabetic retinopathy . Diagnostic tools measuring VEGF levels can help in assessing disease progression and treatment efficacy .
VEGF plays a vital role throughout the life cycle, from development to aging and disease. During embryogenesis, VEGF is essential for the formation of the vascular system . In adults, it is involved in physiological processes such as wound healing, menstrual cycles, and pregnancy . VEGF also contributes to pathological conditions, including cancer, retinopathy, and inflammatory diseases . Its role in promoting angiogenesis makes it a critical factor in both normal physiology and disease states .
