Bamlanivimab
Based on 1 Customer Validation
Bamlanivimab (Anti-Human SARS-CoV-2; LY-CoV555) is an antiviral agent targeting the SARS-CoV-2 spike protein receptor-binding domain (RBD) with a mean Kd of 5.3 nM. Bamlanivimab binds epitopes overlapping the ACE2 binding site on both active and resting RBD conformations, blocks ACE2 attachment, mediates antibody-dependent cell-mediated cytotoxicity, and reduces viral replication and respiratory tract viral load. Bamlanivimab can be used for the research of COVID-19.
For research use only. We do not sell to patients.
- Purity: 99.97%
- CAS No.: 2423943-37-5
- Molecular Weight:144.5 kDa
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Biological Activity
Human IgG1(K214R) kappa
Virus
SARS-CoV-2
Bamlanivimab (300 nM; 5 min association, 15 min dissociation) exhibits high-affinity binding to the soluble trimeric SARS-CoV-2 spike protein, with an apparent Kd within a 100-fold range of other RBD-binding antibodies tested[1].
Bamlanivimab (20 nM SARS-CoV-2 spike protein, 200 nM ACE2; 12 h pre-incubation, 5 min association, 1 min dissociation) competes with human ACE2 for binding to the SARS-CoV-2 spike protein[1].
Bamlanivimab (0.01-10 μg/mL; 45 min pre-incubation with virus, 72 h incubation with cells) potently neutralizes SARS-CoV-2 spike pseudotyped lentivirus in ACE2-transfected 293T cells[1].
Bamlanivimab (0.001-1000 μg/mL; 1 h pre-incubation with virus, 48 h incubation with cells) potently neutralizes a replication-competent luciferase reporter SARS-CoV-2 in Vero E6 cells[1].
Bamlanivimab (0.001-100 μg/mL; 1-2 h pre-incubation with virus, 48 h (INMI-1) or 72 h (USA/WA-1) incubation with cells) potently neutralizes two clinical SARS-CoV-2 isolates (INMI-1 and USA/WA-1/2020) in Vero E6 cells via plaque reduction[1].
Bamlanivimab (~12 mg/mL Fab-RBD complex; crystallization occurred within 1-2 days, harvested on day 3) binds to an ACE2-overlapping epitope on the SARS-CoV-2 RBD, with specific atomic interactions that block ACE2 engagement[1].
Bamlanivimab binds to the SARS-CoV-2 spike protein RBD in both the up and down conformations, allowing recognition of the spike in multiple states of viral entry[1].
Bamlanivimab induces antibody-dependent cell-mediated cytotoxicity in vitro using spike protein-expressing target cells and reporter cells, supporting enhanced viral clearance via intrinsic immune activation[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| Species | Dose | Route | T1/2 (Elimination) | CL |
|---|---|---|---|---|
| Cynomolgus Monkey[1] | 5 mg/kg | i.v. | 312 h | 0.22 mL/h/kg |
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Indian origin (female, 8 to 12 years of age, challenged with SARS-CoV-2 USA-WA-1/2020)[1]
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Dosage:1 mg/kg; 2.5 mg/kg; 15 mg/kg; 50 mg/kg
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Administration:i.v.; single dose
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Result:Reduced viral replication (sgRNA) in BALF by 102 to 105 copies/mL across days 1, 3, and 6 compared to controls, with significant reductions at 1, 2.5, and 15 mg/kg on day 1, and at all doses on day 3 (q < 0.05).
Made viral replication in BALF undetectable by day 3 at all doses.
Significantly reduced viral load (gRNA) in BALF at the 15 mg/kg dose on day 1, and at all doses on day 3.
Made viral replication in lung tissue undetectable at 2.5, 15, and 50 mg/kg on day 6, with significant reductions compared to controls.
Significantly reduced viral load in lung tissue at 2.5, 15, and 50 mg/kg on day 6.
Significantly reduced viral replication in nasal swabs at 1, 2.5, and 50 mg/kg on day 1, and made it undetectable at 2.5, 15, and 50 mg/kg by day 3.
Significantly reduced viral load in nasal swabs at 2.5, 15, and 50 mg/kg on days 3 and 6.
Significantly reduced viral replication in throat swabs at all doses on day 1.
Significantly reduced viral load in throat swabs at 2.5, 15, and 50 mg/kg on day 1.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
YP_009724390.1
Unconjugated
The product can be reconstituted/diluted with sterile PBS or saline.
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Human IgG1 kappa
ELISA, FACS, Functional assay
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Immobilized SARS-CoV-2 S Protein RBD (HEK293, HY-P73396) can bind Bamlanivimab. The EC50 for this effect is 1.353 ng/mL.
Chemical Information
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CAS No. 2423943-37-5
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Appearance Liquid
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Molecular Weight 144.5 kDa
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Color Colorless to light yellow
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SMILES
[Bamlanivimab]
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Synonyms
Anti-Human SARS-CoV-2; LY-3819253; LY-CoV555
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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 (262 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Inhibitory Antibodies User Guide (603 KB)
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
- Bamlanivimab
- 2423943-37-5
- Anti-Human SARS-CoV-2
- LY-3819253
- LY-CoV555
- LY3819253
- LY 3819253
- LY-3819253
- SARS-CoV
- SARS-CoV-2 Omicron variant
- SARS-CoV-2 spike protein receptor-binding domain
- ACE2-transfected 293T cells
- ACE2
- rhesus macaques
- antibody-dependent cell-mediated cytotoxicity
- coronavirus disease 2019
- Vero E6 cells
- cynomolgus monkeys
- COVID-19 convalescent plasma
- Inhibitor
- inhibitor
- inhibit