What is a Biosimilar antibody?

Name: Human ErbB2/Her2 (Based on Research Grade Trastuzumab Biosimilar) Antibody
Brand: R&D Systems
SKU: MAB9896
Price: 449 USD

A Biosimilar antibody is a non-therpeutic, recombinantly-expressed antibody which has the same sequence as the corresponding therapeutic antibody. It is for research use only. The nomenclature of the Biosimilar antibody includes the name of the therapeutic antibody. For example, Catalog # MAB9577 is called Human EGFR (Research Grade CetuxiMab Biosimilar) antibody.

Human ErbB2/Her2 (Based on Research Grade Trastuzumab Biosimilar) Antibody

Catalog #: MAB9896 Datasheet / COA / SDS

Recombinant Monoclonal Antibody For Research Use Only

Catalog #	Availability	Size / Price	Qty
MAB9896-100
MAB9896-SP

Detection of ErbB2/Her2 in MCF-7 human cell line by Flow Cytometry.

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Human ErbB2/Her2 (Based on Research Grade Trastuzumab Biosimilar) Antibody Summary

Species Reactivity

Human

Specificity

Detects human ErbB2/Her2 in Western blots. This non-therapeutic antibody uses the same variable region sequence as the therapeutic antibodyTrastuzumab and uses a mouse IgG1 backbone structure. This product is for research use only.

Source

Recombinant Monoclonal Mouse IgG₁ Clone # H2M5B

Purification

Protein A or G purified from cell culture supernatant

Immunogen

Human ErbB2/Her2

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Flow Cytometry

0.25 µg/10⁶ cells

See below

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Inhibition of Cell Growth

Measured by its ability to inhibit proliferation in the SK‑BR‑3 human breast cancer cell line. Brodowicz, T. et al. (1997) Int. J. Cancer 73:875. The ED₅₀ for this effect is typically 20-100 ng/mL.

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Flow Cytometry

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Detection of ErbB2/Her2 in MCF-7 human cell line by Flow Cytometry. MCF-7 human cell line was stained with Mouse Anti-Human ErbB2/Her2 Monoclonal Antibody (Catalog # MAB9896, filled histogram) or Mouse IgG1 isotype control (Catalog # MAB002, open histogram) followed by anti-Mouse IgG PE-conjugated Secondary Antibody (Catalog # F0102B). View our protocol for Staining Membrane-associated Proteins.

Inhibition of Cell Growth

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Inhibition of Cell Proliferation by ErbB2/Her2 (Based on Research Grade Trastuzumab Biosimilar) Antibody. Mouse Anti-Human ErbB2/Her2 (Based on Research Grade Trastuzumab Biosimilar) Monoclonal Antibody (Catalog # MAB9896) inhibits proliferation in the SK-BR-3 human breast cancer cell line as measured by Resazurin (Catalog # AR002). The ED₅₀ for this effect is typically 20-100 ng/mL.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: ErbB2/Her2

Trastuzumab is a biosimilar directed against the extracellular domain of Her2 (ErbB2). This product uses the variable region sequence of Trastuzumab and has replaced the human IgG1 backbone structure with mouse IgG1.

Long Name

Receptor Tyrosine Protein Kinase ErbB2

Entrez Gene IDs

2064 (Human); 13866 (Mouse); 24337 (Rat); 102146608 (Cynomolgus Monkey)

Alternate Names

CD340 antigen; CD340; c-erb B2/neu protein; EC 2.7.10; EGFR2; ErbB2; HER2; HER-2; HER2EC 2.7.10.1; herstatin; Metastatic lymph node gene 19 protein; MLN 19; MLN19; Neu Oncogene; NEUHER-2/neu; neuroblastoma/glioblastoma derived oncogene homolog; NGL; NGLTKR1; p185erbB2; Proto-oncogene c-ErbB-2; Proto-oncogene Neu; receptor tyrosine-protein kinase erbB-2; TKR1; Tyrosine kinase-type cell surface receptor HER2; v-erb-b2 avian erythroblastic leukemia viral oncogene homolog 2(neuro/glioblastoma derived oncogene homolog); v-erb-b2 erythroblastic leukemia viral oncogene homolog 2, neuro/glioblastomaderived oncogene homolog (avian)

Product Datasheets

Product Datasheet

COA

SDS

Related Research Areas

FAQs

Does this Biosimilar antibody have the same sequence as the therapeutic antibody?
- The Biosimilar antibody has the same variable region and constant region sequence as the therapeutic antibody, except for Catalog numbers MAB9677, MAB9575, MAB9577, MAB9589, and their conjugates. These four antibodies have the same variable region as the Biosimilar, but not the same constant region.
What is a Biosimilar antibody?
- A Biosimilar antibody is a non-therpeutic, recombinantly-expressed antibody which has the same sequence as the corresponding therapeutic antibody. It is for research use only. The nomenclature of the Biosimilar antibody includes the name of the therapeutic antibody. For example, Catalog # MAB9577 is called Human EGFR (Research Grade CetuxiMab Biosimilar) antibody.

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