Human Phospho-VEGFR3/Flt-4 DuoSet IC ELISA Summary
* Provided that the recommended microplates, buffers, diluents, substrates and solutions are used, and the assay is run as summarized in the Assay Procedure provided.
- Optimized capture and detection antibody pairings and recommended concentrations save lengthy development time
- Development protocols are provided to guide further assay optimization
- Assay can be customized to your specific needs
- Available in 2, 5, and 15-(96-well) plate pack sizes
- Economical alternative to Western blot
- Capture Antibody
- Conjugated Detection Antibody
- Calibrated Immunoassay Standard or Control
Other Reagents Required
PBS: (Catalog # DY006), or 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na2HPO4, 1.5 mM KH2O4, pH 7.2 - 7.4, 0.2 µm filtered
Wash Buffer: (Catalog # WA126), or equivalent
Substrate Solution: 1:1 mixture of Color Reagent A (H2O2) and Color Reagent B (Tetramethylbenzidine) (Catalog # DY999)
Stop Solution: 2 N H2SO4 (Catalog # DY994)
Microplates: R&D Systems (Catalog # DY990), or equivalent
Plate Sealers: ELISA Plate Sealers (Catalog # DY992), or equivalent
*For the Lysis Buffer, IC Diluent, and Blocking BUffer recommended for a specific DuoSet ELISA Development Kit, please see the product
Figure 1. The Human Phospho-VEGF R3 DuoSet IC ELISA is more sensitive than immunoprecipitation (IP)-Western analysis Lysates prepared from human VEGF R3 transfected NS0 cells (NS0-hVEGF R3) were diluted in a series and analyzed by (A) IP-Western blot and (B) this DuoSet IC ELISA. IPs were done using an anti-VEGF R3 monoclonal antibody and goat anti-mouse agarose. Immunoblots were incubated with a biotinylated anti-phosphotyrosine monoclonal antibody (Catalog # BAM1676) to detect phospho-VEGF R3. Bands were visualized with Streptavidin-HRP (Cat # DY998) followed by chemiluminescent detection using WesternGloTM Chemiluminescent Detection Substrate (Catalog # AR004). Human Phospho-VEGF R3 can be detected in this DuoSet IC ELISA by using approximately 10 to 15 times less lysate than is needed for a conventional IP-Western blot.
Figure 2. The specificity of the Human Phospho-VEGF R3 DuoSet IC ELISA is confirmed by receptor competition The indicated amounts of recombinant extracellular domains of human VEGF R3 (Catalog #349-F4), human VEGF R1 (Catalog #321-FL), human VEGF R2 (Catalog #357-KD) or human Tie-2 (Catalog #313-TI) were added to 20 μg NS0-hVEGF R3 cell lysate and analyzed using this DuoSet IC ELISA. Competition was observed only with recombinant human VEGF R3.
Preparation and Storage
VEGF R1 (Flt-1), VEGF R2 (KDR/Flk-1), and VEGF R3 (Flt-4) belong to the class III subfamily of receptor tyrosine kinases (RTKs). All three receptors contain seven immunoglobulin-like repeats in their extracellular domain and kinase insert domains in their intracellular region. They are best known for regulating VEGF family-mediated vasculogenesis, angiogenesis, and lymphangiogenesis. They are also mediators of neurotrophic activity and regulators of hematopoietic development. VEGF R2 is thought to be the primary inducer of VEGF-mediated blood vessel growth, while VEGF R3 plays a significant role in VEGF-C and VEGF-D-mediated lymphangiogenesis.
Citations for Human Phospho-VEGFR3/Flt-4 DuoSet IC ELISA
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.
Citations: Showing 1 - 3
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Proteolytic activation defines distinct lymphangiogenic mechanisms for VEGFC and VEGFD
J Clin Invest, 2016;0(0):.
Sample Types: Cell Lysates
The propeptides of VEGF-D determine heparin binding, receptor heterodimerization, and effects on tumor biology.
Authors: Harris, Nicole C, Davydova, Natalia, Roufail, Sally, Paquet-Fifield, Sophie, Paavonen, Karri, Karnezis, Tara, Zhang, You-Fang, Sato, Teruhiko, Rothacker, Julie, Nice, Edouard, Stacker, Steven A, Achen, Marc G
J Biol Chem, 2013;288(12):8176-86.
Sample Types: Cell Lysates
Differential effects of the vascular endothelial growth factor receptor inhibitor PTK787/ZK222584 on tumor angiogenesis and tumor lymphangiogenesis.
Authors: Schomber T, Zumsteg A, Strittmatter K, Crnic I, Antoniadis H, Littlewood-Evans A, Wood J, Christofori G
Mol. Cancer Ther., 2009;8(1):55-63.
Species: Transgenic Mouse
Sample Types: Tissue Homogenates
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