Recombinant Human VEGF (aa 207-318) Protein

(9 citations)   
  • Purity
    >97%, by SDS-PAGE under reducing conditions and visualized by silver stain
  • Endotoxin Level
    <0.01 EU per 1 μg of the protein by the LAL method.
  • Activity
    Measured in a cell proliferation assay using HUVEC human umbilical vein endothelial cells. Conn, G. et al. (1990) Proc. Natl. Acad. Sci. USA 87:1323. The ED50 for this effect is 0.75-3.75 ng/mL.
  • Source
    E. coli-derived Ala207-Arg318
  • Accession #
  • N-terminal Sequence
    Analysis
    Ala207
  • Structure / Form
    Disulfide-linked homodimer
  • Predicted Molecular Mass
    14.1 kDa (monomer)
Carrier Free
What does CF mean?
CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.
What formulation is right for me?
In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.
298-VS
 
298-VS/CF
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA with BSA as a carrier protein.
Formulation Lyophilized from a 0.2 μm filtered solution in Acetonitrile and TFA.
Reconstitution Reconstitute at 50 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Reconstitution Reconstitute at 50 µg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Data Images

Recombinant Human VEGF (aa 207-318) (Catalog # 298-VS) stimulates cell proliferation in HUVEC human umbilical vein endothelial cells in a dose-dependent manner. The ED50 is 0.75-3.75 ng/mL.

1 μg/lane of Recombinant Human VEGF (aa 207-318) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing bands at 13 kDa and 36 kDa, respectively.

Background: VEGF

Vascular endothelial growth factor (VEGF or VEGF-A), also known as vascular permeability factor (VPF), is a potent mediator of both angiogenesis and vasculogenesis in the fetus and adult (1 - 3). It is a member of the PDGF family that is characterized by the presence of eight conserved cysteine residues and a cysteine knot structure (4). Humans express alternately spliced isoforms of 121, 145, 165, 183, 189, and 206 amino acids (aa) in length (4). VEGF165 appears to be the most abundant and potent isoform, followed by VEGF121 and VEGF189 (3, 4). VEGF121 is the only form that lacks a basic heparin-binding region and is freely diffusible (4). Mouse embryos expressing only the corresponding isoform (VEGF120) do not survive to term, and show defects in skeletogenesis (5). Human VEGF121 shares 87% aa sequence identity with corresponding regions of mouse and rat, 93% with feline, equine and bovine, and 91%, 95% and 96% with ovine, canine and porcine VEGF, respectively. VEGF binds the type I transmembrane receptor tyrosine kinases VEGF R1 (also called Flt-1) and VEGF R2 (Flk-1/KDR) on endothelial cells (4). Although VEGF affinity is highest for binding to VEGF R1, VEGF R2 appears to be the primary mediator of VEGF angiogenic activity (3, 4). VEGF165 binds the semaphorin receptor, Neuropilin-1; VEGF121 binding has also been reported (6). VEGF is required during embryogenesis to regulate the proliferation, migration, and survival of endothelial cells (3, 4). In adults, VEGF functions mainly in wound healing and the female reproductive cycle (3). Pathologically, it is involved in tumor angiogenesis and vascular leakage (7, 8). Circulating VEGF levels correlate with disease activity in autoimmune diseases such as rheumatoid arthritis, multiple sclerosis and systemic lupus erythematosus (9). VEGF is induced by hypoxia and cytokines such as IL-1, IL-6, IL-8, oncostatin M and TNF-alpha (3, 4, 10).

  • References:
    1. Leung, D.W. et al. (1989) Science 246:1306. 
    2. Keck, P.J. et al. (1989) Science 246:1309. 
    3. Byrne, A.M. et al. (2005) J. Cell. Mol. Med. 9:777.
    4. Robinson, C.J. and S.E. Stringer (2001) J. Cell. Sci. 114:853.
    5. Zelzer, E. et al. (2002) Development 129:1893.
    6. Pan, Q. et al. (2007) J. Biol. Chem. 282:24049.
    7. Weis, S.M. and D.A. Cheresh (2005) Nature 437:497.
    8. Thurston, G. (2002) J. Anat. 200:575.
    9. Carvalho, J.F. et al. (2007) J. Clin. Immunol. 27:246.
    10. Angelo, L.S. and R. Kurzrock (2007) Clin. Cancer Res. 13:2825.
  • Long Name:
    Vascular Endothelial Growth Factor
  • Entrez Gene IDs:
    7422 (Human); 22339 (Mouse); 83785 (Rat); 281572 (Bovine); 403802 (Canine); 493845 (Feline); 30682 (Zebrafish)
  • Alternate Names:
    MVCD1; VAS; vascular endothelial growth factor A; Vascular permeability factor; Vasculotropin; VEGF; VEGFA; VEGF-A; VEGFMGC70609; VPF; VPFvascular endothelial growth factor
Related Research Areas
Citations:

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

9 Citations: Showing 1 - 9
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Species
Applications
Sample Type
  1. Bone marrow cells recruited through the neuropilin-1 receptor promote arterial formation at the sites of adult neoangiogenesis in mice.
    Authors: Zacchigna S, Pattarini L, Zentilin L, Moimas S, Carrer A, Sinigaglia M, Arsic N, Tafuro S, Sinagra G, Giacca M
    J. Clin. Invest., 2008;118(6):2062-75.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  2. Th1/Th2 cytokines reciprocally regulate in vitro pulmonary angiogenesis via CXC chemokine synthesis.
    Authors: Matsuda A, Fukuda S, Matsumoto K, Saito H
    Am. J. Respir. Cell Mol. Biol., 2007;38(2):168-75.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  3. Vascular endothelial growth factor can signal through platelet-derived growth factor receptors.
    Authors: Ball SG, Shuttleworth CA, Kielty CM
    J. Cell Biol., 2007;177(3):489-500.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  4. Neuropilin-1 binds to VEGF121 and regulates endothelial cell migration and sprouting.
    Authors: Pan Q, Chathery Y, Wu Y, Rathore N, Tong RK, Peale F, Bagri A, Tessier-Lavigne M, Koch AW, Watts RJ
    J. Biol. Chem., 2007;282(33):24049-56.
    Species: Human
    Sample Type: Recombinant Protein
    Application: Binding Assay
  5. Mechanisms of endothelial cell protection by blockade of the JAK2 pathway.
    Authors: Neria F, Caramelo C, Peinado H, Gonzalez-Pacheco FR, Deudero JJ, de Solis AJ, Fernandez-Sanchez R, Penate S, Cano A, Castilla MA
    Am. J. Physiol., Cell Physiol., 2006;292(3):C1123-31.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  6. Low molecular weight fucoidan increases VEGF165-induced endothelial cell migration by enhancing VEGF165 binding to VEGFR-2 and NRP1.
    Authors: Lake AC, Vassy R, Di Benedetto M, Lavigne D, Le Visage C, Perret GY, Letourneur D
    J. Biol. Chem., 2006;281(49):37844-52.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay
  7. Ligand-induced internalization selects use of common receptor neuropilin-1 by VEGF165 and semaphorin3A.
    Authors: Narazaki M, Tosato G
    Blood, 2006;107(10):3892-901.
    Species: N/A
    Sample Type: N/A
    Application: ELISA Standard
  8. Microvascular patterning is controlled by fine-tuning the Akt signal.
    Authors: Sun JF, Phung T, Shiojima I, Felske T, Upalakalin JN, Feng D, Kornaga T, Dor T, Dvorak AM, Walsh K, Benjamin LE
    Proc. Natl. Acad. Sci. U.S.A., 2005;102(1):128-33.
    Species: Bovine
    Sample Type: Whole Cells
    Application: Bioassay
  9. VEGF164(165) as the pathological isoform: differential leukocyte and endothelial responses through VEGFR1 and VEGFR2.
    Authors: Usui T, Ishida S, Yamashiro K, Kaji Y, Poulaki V, Moore J, Moore T, Amano S, Horikawa Y, Dartt D, Golding M, Shima DT, Adamis AP
    Invest. Ophthalmol. Vis. Sci., 2004;45(2):368-74.
    Species: Human
    Sample Type: Whole Cells
    Application: Bioassay

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