VEGF Antibody (VG76e) - Azide and BSA Free

Novus Biologicals | Catalog # NBP2-81006

Novus Biologicals
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Key Product Details

Species Reactivity

Human, Rat, Porcine, Bovine, Sheep

Applications

Immunohistochemistry, Immunohistochemistry-Paraffin, Western Blot, ELISA, Immunocytochemistry/ Immunofluorescence, Radioimmunoassay

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # VG76e

Format

Azide and BSA Free
View all VEGF Primary Antibodies »

Product Specifications

Immunogen

Recombinant human VEGF189 expressed in E.coli [UniProt# P15692]

Reactivity Notes

Mixed results in Cow and Pig (IHC only). Customers have reported success staining sheep tissue (see review).

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Theoretical MW

40 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Scientific Data Images for VEGF Antibody (VG76e) - Azide and BSA Free

Western Blot: VEGF Antibody (VG76e)Azide and BSA Free [NBP2-81006]

Western Blot: VEGF Antibody (VG76e)Azide and BSA Free [NBP2-81006]

Western Blot: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006] - Analysis of VEGF in human kidney protein (30ug). Image from the standard format of this antibody.
Immunocytochemistry/ Immunofluorescence: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006]

Immunocytochemistry/ Immunofluorescence: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006]

Immunocytochemistry/Immunofluorescence: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006] - Immunofluorescent analysis of VEGF using NB100-648. This image submitted through a verified customer review. Image from the standard format of this antibody.
Immunohistochemistry: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006]

Immunohistochemistry: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006]

Immunohistochemistry: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006] - IHC analysis of VEGF in fetal sheep brain tissue. Image courtesy of anonymous customer review. Image from the standard format of this antibody.
Immunohistochemistry: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006]

Immunohistochemistry: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006]

Immunohistochemistry: VEGF Antibody (VG76e) - Azide and BSA Free [NBP2-81006] - IHC-P analysis of VEGF in sheep tonsil using NB100-648. This image was submitted through a verified customer review. Image from the standard format of this antibody.

Applications for VEGF Antibody (VG76e) - Azide and BSA Free

Application
Recommended Usage

ELISA

1:100-1:2000

Immunocytochemistry/ Immunofluorescence

1:50-1:200

Immunohistochemistry

1:200

Immunohistochemistry-Paraffin

1:200

Radioimmunoassay

reported in scientific literature

Western Blot

0.5-2ug/ml
Application Notes
In Western blot a band is observed between 38-44 kDa. With IHC-paraffin sections, microwave treatment with Tris HCl pH 10 buffer (NOT citrate buffer) is necessary. VEGF-A is a hetero dimer, consisting of 2 chains of approximately 24kDa each.

Formulation, Preparation, and Storage

Purification

Protein G purified

Formulation

PBS

Format

Azide and BSA Free

Preservative

No Preservative

Concentration

1 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.

Background: VEGF

Vascular endothelial growth factor (VEGF), also called VEGF-A and vascular permeability factor (VPF), is a secreted homodimeric glycoprotein belonging to the VEGF family with a role in stimulating angiogenesis and vasculogenesis (1,2). More specifically, VEGF-A secretion from most cell types contributes to promoting endothelial cell proliferation and migration, inhibiting apoptosis, increasing vascular permeability, and wound healing (1). The VEGF family consists of several members including VEGF-A, VEGF-B, VEGF-C, VEGF-D, VEGF-E, VEGF-F, and placenta growth factor (PLGF) (1-4). As a result of alternative splicing of the eight exon VEGFA gene, there are several VEGF-A protein isoforms of 121, 145, 165, 183, 189, and 206 amino acids (aa) in length, with VEGF121 and VEGF165 being the two most expressed isoforms (1,5). Full length VEGF-A monomer has a 26 aa signal sequence plus a 206 aa (VEGF206) sequence, with a theoretic molecular weight (MW) of 27 kDa, containing VEGF receptor 1 (VEGFR1) and VEGR2 binding sites and heparin-binding domains (1-3,5,6). VEGF121 lacks heparin affinity and binds the receptor tyrosine kinases (RTKs) VEGFR1 and VEGFR2, whereas VEGF165 has moderate affinity for heparin and, in addition to being a ligand for VEGFR1 and VEGFR2, can also bind the co-receptors neuropilin 1 (NRP1) and NRP2 (1,5). Hypoxia and hypoxia-related genes such as HIF-1, EGF, and PDGF are major regulators angiogenesis and VEGF expression (1,3). VEGF signaling initiated by ligand binding to its receptors results in activation of different pathways including PI3K and MAPK and ultimately guides endothelial cell proliferation, migration, and survival (1,3). While VEGF plays an important role in promoting normal angiogenesis and blood vessel formation, its expression is often upregulated in tumors and other angiogenesis-related pathologies like osteroarthritis (OA) (1-5,7). Given its function, VEGF and its receptors have become a therapeutic target for treating cancer and blocking angiogenesis (4,5,7). A recombinant humanized monoclonal anti-VEGFA antibody called bevacizumab (Avastin) was first approved by the FDA in 2004 for the treatment of a number of cancers (1-3,5). Cancer patients may experience resistance to anti-VEGF antibodies and, as such, clinical studies are exploring combination treatment options with chemotherapies and immune-checkpoint inhibitors (3,5).

References

1. Melincovici CS, Bosca AB, susman S, et al. Vascular endothelial growth factor (VEGF) - key factor in normal and pathological angiogenesis. Rom J Morphol Embryol. 2018;59(2):455-467.

2. Shaik F, Cuthbert GA, Homer-Vanniasinkam S, Muench SP, Ponnambalam S, Harrison MA. Structural Basis for Vascular Endothelial Growth Factor Receptor Activation and Implications for Disease Therapy. Biomolecules. 2020;10(12):1673. https://doi.org/10.3390/biom10121673

3. Apte RS, Chen DS, Ferrara N. VEGF in Signaling and Disease: Beyond Discovery and Development. Cell. 2019;176(6):1248-1264. https://doi.org/10.1016/j.cell.2019.01.021

4. Matsumoto K, Ema M. Roles of VEGF-A signalling in development, regeneration, and tumours. J Biochem. 2014;156(1):1-10. https://doi.org/10.1093/jb/mvu031

5. Itatani Y, Kawada K, Yamamoto T, Sakai Y. Resistance to Anti-Angiogenic Therapy in Cancer-Alterations to Anti-VEGF Pathway. Int J Mol Sci. 2018;19(4):1232. Published 2018 Apr 18. doi:10.3390/ijms19041232

6. Uniprot (P15692)

7. Hamilton JL, Nagao M, Levine BR, Chen D, Olsen BR, Im HJ. Targeting VEGF and Its Receptors for the Treatment of Osteoarthritis and Associated Pain. J Bone Miner Res. 2016;31(5):911-924. https://doi.org/10.1002/jbmr.2828

Long Name

Vascular Endothelial Growth Factor

Alternate Names

MVCD1, VAS, Vasculotropin, VEGF-A, VEGFA, VPF

Gene Symbol

VEGFA

Additional VEGF Products

Product Documents for VEGF Antibody (VG76e) - Azide and BSA Free

Certificate of Analysis

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Product Specific Notices for VEGF Antibody (VG76e) - Azide and BSA Free

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Protocols

Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

FAQs for VEGF Antibody (VG76e) - Azide and BSA Free

Showing  1 - 2 of 2 FAQs Showing All

  • Q: What is the heparin binding activity of FGF and VEGF?

    A: These proteins are not assayed for their ability to bind Heparin. More information about the FGF family of growth factors is available in this review article: Basilico, C. (1992) Adv. Can. Res. 59:115.

  • Q: Why is the molecular weight of VEGF different from the similar antibody, for some companies the the molecular weight is 40KD)?

    A: I can't comment on another company's antibody because I don't have any information about their products. I can tell you that VEGF is expressed in a variety of isoforms and is subject to various post-translational modifications that influence its apparent molecular weight in an SDS-PAGE gel compared to the theoretical molecular weight.

  • Q: What is the heparin binding activity of FGF and VEGF?

    A: These proteins are not assayed for their ability to bind Heparin. More information about the FGF family of growth factors is available in this review article: Basilico, C. (1992) Adv. Can. Res. 59:115.

  • Q: Why is the molecular weight of VEGF different from the similar antibody, for some companies the the molecular weight is 40KD)?

    A: I can't comment on another company's antibody because I don't have any information about their products. I can tell you that VEGF is expressed in a variety of isoforms and is subject to various post-translational modifications that influence its apparent molecular weight in an SDS-PAGE gel compared to the theoretical molecular weight.

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