Catalog #CP224

RecombiMAb anti-mouse/human VEGF-A (LALA-PG)

Clone B20-4.1.1-CP224
Reactivities Mouse, Human
Applications in vivo VEGF-A neutralization
in vitro VEGF-A neutralization
ELISA
Isotype Mouse IgG2a (LALA-PG), κ

$560.00 - $14,859.50

$560.00 - $14.00

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  • 100 mg - $14,859.50
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  • 5 mg - $2,170.50
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Product Description

B20-4.1.1-CP224 is a recombinant monoclonal antibody that reacts with both mouse and human vascular endothelial growth factor A (VEGF-A). This antibody binds to all isoforms of VEGF-A, and it does not show any detectable cross-reactivity against VEGF-B, VEGF-C, VEGF-D, and placental growth factor. VEGF-A is a ~45 kDa homodimeric, disulfide-linked glycoprotein that plays a central role in endothelial cell proliferation, migration, angiogenesis, vasculogenesis, and vascular permeability. Solid tumors often depend on angiogenesis for growth and neovascularization, and inhibition of VEGF-A with neutralizing antibodies represents a key therapeutic strategy in cancer biology. In preclinical research, B20-4.1.1 is a well-characterized anti-VEGF-A antibody that potently neutralizes both murine and human VEGF-A. This clone effectively blocks the interaction of all isoforms of VEGF-A with its receptors, VEGFR1 (Flt-1) and VEGFR2 (Flk-1/KDR). Bevacizumab biosimilar antibodies, on the other hand, do not reliably neutralize murine VEGF-A to block VEGFR signaling, limiting their utility in mouse models. B20-4.1.1-CP224 has a mouse IgG2a Fc that includes the silencing mutations LALA-PG, rendering it unable to bind endogenous murine Fcγ receptors or C1q to induce antibody-dependent cell-mediated cytotoxicity (ADCC) or complement-dependent cytotoxicity (CDC). This allows for the evaluation of the anti-angiogenic effect without the contribution of Fc-mediated effector functions. Studies have demonstrated Fc-silent B20-4.1.1 with IgG2a LALA-PG isotype exhibited an increased therapeutic effect on lesion size in a laser‑induced choroidal neovascularization (CNV) mouse model compared to B20-4.1.1 with an effector competent mouse IgG2a isotype. This suggests removing FcγR/C1q interactions does not impair—and may even enhance—the anti‑angiogenic effect of B20-4.1.1 in certain disease models.

Specifications

Isotype Mouse IgG2a (LALA-PG), κ
Recommended Isotype Control(s) RecombiMAb mouse IgG2a (LALA-PG) isotype control, anti-hen egg lysozyme
Recommended Dilution Buffer InVivoPure pH 7.0 Dilution Buffer
Conjugation This product is unconjugated. Conjugation is available via our Antibody Conjugation Services.
Mutations LALA-PG
Immunogen Human VEGF
Reported Applications in vivo VEGF-A neutralization
in vitro VEGF-A neutralization
ELISA
Formulation PBS, pH 7.0
Contains no stabilizers or preservatives
Endotoxin ≤0.5EU/mg (≤0.0005EU/μg)
Determined by LAL assay
Aggregation <5%
Determined by SEC
Purity ≥95%
Determined by SDS-PAGE
Sterility 0.2 µm filtration
Production Purified from mammalian cell supernatant in an animal-free facility
Purification Protein A
Molecular Weight 150 kDa
Murine Pathogen Tests Ectromelia/Mousepox Virus: Negative
Hantavirus: Negative
K Virus: Negative
Lactate Dehydrogenase-Elevating Virus: Negative
Lymphocytic Choriomeningitis virus: Negative
Mouse Adenovirus: Negative
Mouse Cytomegalovirus: Negative
Mouse Hepatitis Virus: Negative
Mouse Minute Virus: Negative
Mouse Norovirus: Negative
Mouse Parvovirus: Negative
Mouse Rotavirus: Negative
Mycoplasma Pulmonis: Negative
Pneumonia Virus of Mice: Negative
Polyoma Virus: Negative
Reovirus Screen: Negative
Sendai Virus: Negative
Theiler’s Murine Encephalomyelitis: Negative
Storage The antibody solution should be stored at the stock concentration at 4°C. Do not freeze.
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Application References

  • in vivo VEGF-A neutralization in vitro VEGF-A neutralization
    Gjølberg TT, Wik JA, Johannessen H, Krüger S, Bassi N, Christopoulos PF, Bern M, Foss S, Petrovski G, Moe MC, Haraldsen G, Fosse JH, Skålhegg BS, Andersen JT, Sundlisæter E (2023). "Antibody blockade of Jagged1 attenuates choroidal neovascularization

    Antibody-based blocking of vascular endothelial growth factor (VEGF) reduces choroidal neovascularization (CNV) and retinal edema, rescuing vision in patients with neovascular age-related macular degeneration (nAMD). However, poor response and resistance to anti-VEGF treatment occurs. We report that targeting the Notch ligand Jagged1 by a monoclonal antibody reduces neovascular lesion size, number of activated phagocytes and inflammatory markers and vascular leakage in an experimental CNV mouse model. Additionally, we demonstrate that Jagged1 is expressed in mouse and human eyes, and that Jagged1 expression is independent of VEGF signaling in human endothelial cells. When anti-Jagged1 was combined with anti-VEGF in mice, the decrease in lesion size exceeded that of either antibody alone. The therapeutic effect was solely dependent on blocking, as engineering antibodies to abolish effector functions did not impair the therapeutic effect. Targeting of Jagged1 alone or in combination with anti-VEGF may thus be an attractive strategy to attenuate CNV-bearing diseases.

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Additional Formats

  1. Catalog #CP202
    RecombiMAb anti-mouse/human VEGF-A Read more