Lirentelimab
Based on 1 Customer Validation
Lirentelimab (AK002) is a humanized IgG1 monoclonal antibody that targets sialic acid-binding Ig-like lectin 8 (SIGLEC8). Lirentelimab induces cell apoptosis of IL-5-activated eosinophils and inhibits IgE-mediated mast cell activation. Lirentelimab can be used for the research of eosinophilic gastritis and duodenitis.
For research use only. We do not sell to patients.
- Purity: 99.91%
- CAS No.: 2283348-97-8
- Molecular Weight:144.31 kDa
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Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
- Purity & Documentation
- References
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Help & FAQs
Biological Activity
Human IgG1 kappa
Human
Siglec-8
Monovalent Lirentelimab fragment antigen-binding (fab) binds to recombinant SIGLEC8 extracellular domain (ECD) is determined to be 464 pM[1]. Lirentelimab shows high affinity to SIGLEC8 in vitro, to SIGLEC8 expressed on eosinophils, and to NK cells via its Fc region in human blood[1]. Lirentelimab (1 µg/mL) selectively binds to eosinophils in human peripheral blood, and eosinophils and mast cells from human lung tissue[1]. Lirentelimab (0.0001-100 μg/mL; 30 min) induces apoptosis of IL-5-activated eosinophils[1]. Lirentelimab (30 min) shows potent antibody-dependent cell-mediated cytotoxicity (ADCC) Activity on human eosinophils with an EC50 value of 1.9 ng/mL to eosinophils in peripheral blood leukocytes (PBL) preparations from healthy donors[1]. Lirentelimab reduces eosinophil numbers in ex vivo human tissue[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:Eosinophils
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Concentration:10 μg/mL-1 pg/mL
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Incubation Time:30 min
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Result:Dose-dependently induced apoptosis of IL-5-activated (50 ng/mL) eosinophils.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Humanized mice (NSG-SGM3) engrafts with human thymus, liver, and HSC[1]
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Dosage:100 μg
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Administration:Intravenous injection; 100 μg, once
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Result:Completely prevented passive systemic anaphylaxis (PSA) as shown by a lack of change in rectal temperature and symptom scores in mice.
| NCT Number | Sponsor | Condition | Start Date |
Phase
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|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
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 Siglec-8 Protein, Human (HEK293, His, HY-P71313) can bind Lirentelimab. The EC50 for this effect is 2.468 ng/mL.
Chemical Information
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CAS No. 2283348-97-8
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Appearance Liquid
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Molecular Weight 144.31 kDa
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Color Colorless to light yellow
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SMILES
[Lirentelimab]
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Synonyms
AK002; Antolimab
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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 (260 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
[1]. Youngblood BA, et al. AK002, a Humanized Sialic Acid-Binding Immunoglobulin-Like Lectin-8 Antibody that Induces Antibody-Dependent Cell-Mediated Cytotoxicity against Human Eosinophils and Inhibits Mast Cell-Mediated Anaphylaxis in Mice. Int Arch Allergy Immunol. 2019;180(2):91-102. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Lirentelimab Related Classifications
HY-P99371 Related Classifications
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