Omburtamab
Based on 1 Customer Validation
Omburtamab (Mab 8H9) is a mouse monoclonal immunoglobulin G1 (IgG1) antibody targeting B7-H3. Omburtamab specifically binds to the glycoprotein antigen B7-H3, which is widely expressed on the surface of tumor cells. As a targeting carrier for recombinant toxins, it delivers PE38 to inhibit cellular protein synthesis and induce cytotoxicity in antigen-expressing cancer cells. Omburtamab can be used in research related to glioma, breast cancer, osteosarcoma and neuroblastoma.
For research use only. We do not sell to patients.
- Purity : 99.16%
- CAS No.: 1895083-75-6
- Molecular Weight:144.98 kDa
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Storage:Shipping with dry ice
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Description
Isotype
Mouse IgG2a kappa
Recommend Isotype Controls
Species Reactivity
Mouse
IC50 & Target
B7-H3/CD276
In Vitro
Omburtamab (15 mg/mL; 1-48 h) demonstrates sustained cell-surface retention and resistance to immune modulation in U2OS and NMB7 cells[3].
Omburtamab (15 mg/mL; 30 min) shows reduced binding to HTB82, U2OS, and NMB7 cells following treatment with varying concentrations of Protease E, indicating that the recognized antigen is protease-sensitive[3].
Omburtamab (1 mg; 16 h) immunoprecipitates a protein antigen of approximately 90 kDa (58 kDa after deglycosylation) from NMB7, LAN-1, HTB82, U2OS, HeLa, and 293 cells[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:CRL1427 and other tumor cell lines
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Concentration:15 mg/ml
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Incubation Time:1 h
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Result:Exhibited moderate to strong immunofluorescence binding reactivity on the tested tumor cell membranes.
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Cell Line:U2OS and NMB7
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Concentration:15 mg/ml
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Incubation Time:1, 2, 4, 8, 12, 24, 36, 48 h
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Result:Did not show a significant loss of binding during the 48-hour culture period, indicating it is not easily modulated off or internalized from the cell surface.
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Cell Line:NMB7, LAN-1, HTB82, U2OS, HeLa, 293
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Concentration:1 mg
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Incubation Time:16 h
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Result:Specifically immunoprecipitated a broad band protein of approximately 90 kDa (a single 58 kDa band after N-glycanase treatment).
In Vivo
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Female athymic nude mice (6-8 weeks old) were subcutaneously implanted in the flank with 5 x 106 LAN-1 neuroblastoma cells[4]
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Dosage:50 μCi, corresponding to 13-30 μg
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Administration:i.v.; single dose; 48 h
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Result:Exhibited excellent in vivo tumor-targeting specificity.
Clinical Trial
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | 2011-05 | PHASE1 |
Gene ID
Accession
Conjugated
Unconjugated
Reconsititution
The product can be reconstituted/diluted with sterile PBS or saline.
Format
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IgG1-kappa
Application
ELISA, FACS, Functional assay
Verified Bioactivity
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Immobilized CD276/B7-H3 Protein, Human (433a.a, HEK293, His, HY-P70652) can bind Omburtamab. The EC50 for this effect is 45.43 ng/mL. -
Flow cytometric analysis of 1.5×106 THP-1 cells with Omburtamab (HY-P99157, red). Cells were fixed with 4% paraformaldehyde and permeabilised with 90% methanol. Then stained with the primary antibody at 1/200 dilution for an hour at 4℃. Alexa Goat Anti-Human IgG H&L (AF488) (HY-P83776) was used as the secondary antibody at 1/1,000 dilution for 30 minutes at 4℃. Human IgG1 kappa Isotype Control (HY-P99001, blue) was used as the isotype control, cells without incubation with primary antibody were used as the unlabeled control (black).
Chemical Information
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CAS No. 1895083-75-6
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Appearance Liquid
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Molecular Weight 144.98 kDa
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Color Colorless to light yellow
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SMILES
[Omburtamab]
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Synonyms
Mab 8H9
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Shipping
Shipping with dry ice.
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Formulation
Please refer to the lot-specific COA for specific buffer information.
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Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
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Data Sheet (272 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Inhibitory Antibodies User Guide (603 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)