Catalog #BE0461

InVivoMAb anti-mouse/human/canine HER2 (domain III) (CD340)

Clone H2Mab-19
Reactivities Mouse, Human, Canine
Isotype Mouse IgG2b, κ

$178.00 - $4,651.50

$178.00 - $4.00

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  • 100 mg - $4,651.50
  • 50 mg - $3,286.00
  • 25 mg - $2,183.00
  • 5 mg - $652.00
  • 1 mg - $178.00
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Product Description

The H2Mab-19 monoclonal antibody reacts with domain III of mouse, human and canine receptor tyrosine-protein kinase erbB-2 (ERBB2), also known as human epidermal growth factor receptor 2 (HER2), CD340, or NEU. HER2 is a 185 kDa transmembrane receptor tyrosine kinase that is part of the EGFR family. The HER2 receptor contains a cytoplasmic tyrosine kinase domain, multiple cytoplasmic tyrosine residues that function as phosphorylation sites, a hydrophobic single-pass transmembrane domain, and an extensive extracellular domain (ECD) subdivided into four functional domains (I, II, III, and IV). Domains I and III facilitate ligand binding, domain II reinforces protein-protein interactions during dimerization, and domain IV stabilizes interactions between HER2 and its dimerization partner. HER2 lacks identified ligands; nonetheless, its homodimerization (HER2/HER2) and heterodimerization (EGFR/HER2, HER2/HER3, and HER2/HER4) facilitate HER2 activation, subsequently modulating downstream signaling pathways, including PI3K/Akt/mTOR and NF-kB. HER2 is essential for cell proliferation, survival, and differentiation, and in cancers, dysregulated HER2 signaling or its overexpression often correlates with aggressive tumor growth. In addition to breast cancer, HER2 is overexpressed in gastric, gastroesophageal, colorectal, lung, endometrial, and ovarian cancers. The H2Mab-19 antibody has been shown to have anti-tumor activity in HER2+ xenograft models.

Specifications

Isotype Mouse IgG2b, κ
Recommended Isotype Control(s) InVivoMAb mouse IgG2b isotype control, unknown specificity
Recommended Dilution Buffer InVivoPure pH 7.0 Dilution Buffer
Immunogen Recombinant human HER2 extracellular domain
Reported Applications in vivo antitumor activity in HER2+ models
in vitro induction of ADCC in HER2+ cells
in vitro induction of CDC in HER2+ cells
Immunohistochemistry (frozen)
Flow cytometry
Formulation PBS, pH 7.0
Contains no stabilizers or preservatives
Endotoxin ≤1EU/mg (≤0.001EU/μg)
Determined by LAL assay
Purity ≥95%
Determined by SDS-PAGE
Sterility 0.2 µm filtration
Production Purified from cell culture supernatant in an animal-free facility
Purification Protein A
Molecular Weight 150 kDa
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 antitumor activity in HER2+ xenograft model Flow Cytometry Immunohistochemistry (frozen) in vitro induction of ADCC in HER2+ cells in vitro induction of CDC in HER2+ cells
    Takei J, Kaneko MK, Ohishi T, Kawada M, Harada H, Kato Y (2020). "H2Mab-19, an anti-human epidermal growth factor receptor 2 monoclonal antibody exerts antitumor activity in mouse oral cancer xenografts" Exp Ther Med 20(2):846-853.

    Human epidermal growth factor receptor 2 (HER2) is reported to be overexpressed in breast cancers and is associated with poor clinical outcome. Trastuzumab is a humanized anti-HER2 antibody that offers significant survival benefits to patients with HER2-overexpressing breast cancer. In this study, a novel anti-HER2 monoclonal antibody (mAb), H2Mab-19 (IgG2b, kappa) was developed. Antibody-dependent cellular cytotoxicity (ADCC), complement-dependent cytotoxicity (CDC), and antitumor activity of H2Mab-19 were investigated using both breast cancer and oral cancer cell lines. H2Mab-19 demonstrated cytotoxicity in BT-474 (a human breast cancer cell line) and HSC-2 or SAS (human oral cancer cell lines). H2Mab-19 also possessed both ADCC and CDC activity against BT-474, HSC-2, and SAS cell lines. In comparison to control mouse IgG, H2Mab-19 significantly reduced tumor development in BT-474, HSC-2, and SAS xenografts. Collectively, these results suggest that treatment with H2Mab-19 may be a useful therapy for patients with HER2-expressing breast and oral cancers.

  • in vivo antitumor activity in HER2+ xenograft model Flow Cytometry
    Kato Y, Ohishi T, Sano M, Asano T, Sayama Y, Takei J, Kawada M, Kaneko MK (2020). "H2Mab-19 Anti-Human Epidermal Growth Factor Receptor 2 Monoclonal Antibody Therapy Exerts Antitumor Activity in Pancreatic Cancer Xenograft Models" Monoclon

    Overexpression of human epidermal growth factor receptor 2 (HER2) has been reported in breast cancer, gastric, lung, colorectal, oral, and pancreatic cancers. HER2 expression is associated with poor clinical outcomes. An anti-HER2 humanized antibody, trastuzumab, has improved survival rates in patients with HER2-overexpressing breast and gastric cancers. Previously, we established a novel anti-HER2 monoclonal antibody (mAb), H2Mab-19 (IgG2b, kappa). It has also been characterized for breast, oral, and colon cancers. In this study, we investigated the antitumor activities of H2Mab-19 in pancreatic cancer xenograft models. We selected MIA PaCa-2, a pancreatic cancer cell line which expresses HER2. H2Mab-19 showed high binding affinity (KD: 1.2 × 10-8 M) against MIA PaCa-2 cells. Furthermore, H2Mab-19 significantly reduced tumor development in a MIA PaCa-2 xenograft model. These results suggest that treatment with H2Mab-19 may be a useful therapy for patients with HER2-expressing pancreatic cancers.

  • in vivo antitumor activity in HER2+ xenograft model in vitro induction of ADCC in HER2+ cells in vitro induction of CDC in HER2+ cells Flow Cytometry
    Kato Y, Ohishi T, Takei J, Nakamura T, Sano M, Asano T, Sayama Y, Hosono H, Kawada M, Kaneko MK (2020). "An Anti-Human Epidermal Growth Factor Receptor 2 Monoclonal Antibody H2Mab-19 Exerts Antitumor Activity in Mouse Colon Cancer Xenograf

    Trastuzumab is a humanized antibody against human epidermal growth factor receptor 2 (HER2) that offers significant survival benefits to patients with HER2-overexpressing breast or gastric cancer. HER2 is also known to be overexpressed in colon cancers. In this study, a novel anti-HER2 monoclonal antibody (mAb), H2Mab-19 (IgG2b, κ) was characterized for its anticancer activity in colon cancers. H2Mab-19 showed both antibody-dependent cellular cytotoxicity and complement-dependent cytotoxicity activities against Caco-2, a colon cancer cell line. Furthermore, H2Mab-19 significantly reduced tumor development in a Caco-2 xenograft model. These results suggest that treatment with H2Mab-19 may be a useful therapy for patients with HER2-expressing colon cancers.

  • in vivo antitumor activity in HER2+ xenograft model Flow Cytometry
    Kato Y, Ohishi T, Takei J, Nakamura T, Kawada M, Kaneko MK (2020). "An Antihuman Epidermal Growth Factor Receptor 2 Monoclonal Antibody (H2Mab-19) Exerts Antitumor Activity in Glioblastoma Xenograft Models" Monoclon Antib Immunodiagn Immun

    Overexpression of human epidermal growth factor receptor 2 (HER2) has been reported in glioblastoma as well as breast, gastric, lung, colorectal, and pancreatic cancers. Its expression is associated with poor clinical outcomes. Anti-HER2 antibodies have provided significant survival benefits to patients with HER2-overexpressing breast and gastric cancers. We recently developed an anti-HER2 monoclonal antibody (mAb), H2Mab-19 (IgG2b, kappa), by immunizing mice with the extracellular domain of HER2, which is expressed in LN229 glioblastoma cells. In this study, we investigated the antitumor activity of H2Mab-19 in an LN229 glioblastoma xenograft model. H2Mab-19 showed high binding affinity (KD: 1.1 × 10-8 M) against LN229 cells. Furthermore, H2Mab-19 significantly reduced tumor development in an LN229 xenograft. These results suggest that treatment with H2Mab-19 may be a useful therapy for patients with HER2-expressing glioblastomas.

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