Talacotuzumab
Based on 1 publication(s) in Google Scholar
Talacotuzumab (JNJ 56022473; CSL 362) is an IgG1-type fully humanized, CD123-neutralizing monoclonal antibody containing a modified Fc structure. Talacotuzumab has KDs of 0.43 nM, 188 nM, 46 nM, 16.8 nM for CD123, CD32b/c, CD16-158F, CD16-158V, respectively. Talacotuzumab inhibits IL-3 binding to CD123, antagonizing IL-3 signaling in target cells. Talacotuzumab has mutated the Fc region to increase affinity for CD16 (FcγRIIIa), thereby enhancing antibody-dependent cell-mediated cytotoxicity (ADCC). Talacotuzumab is highly effective in vivo reducing leukemic cell growth in acute myeloid leukemia (AML) xenograft mouse models.
Nur für Forschungszwecke. Wir verkaufen nicht an Patienten.
- Reinheit: 98.82%
- CAS. Nr.: 1826831-79-1
- Molecular Weight:147.42 kDa
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Speicherung:
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications Citing Use of MedChemExpress (MCE) Talacotuzumab
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Biologische Aktivität
Human IgG1 kappa
Human
IL-3Ra/CD123
Talacotuzumab (JNJ 56022473; CSL 362) strongly mediates ADCC of TF-1 cells with an ic50 of 5 ng/ml (33 pM)[1].
Talacotuzumab (1 μg/ml; pretreatment for 24 hours) inhibits TLR7-stimulated (Imiquimod; HY-B0180; 0.5 μM; for 6 days) and TLR9-stimulated (CpG C; 0.5 μM; for 6 days) IFN-α production in both SLE donors and healthy donors plasmacytoid dendritic cells (pDCs) and basophils, whereas TLR4-stimulated (LPS; HY-D1056; 10 μg/ml) production is not significantly reduced. Talacotuzumab inhibits TLR7- and TLR9-induced plasmablast expansion and proliferation by depletion of plasmacytoid dendritic cells (pDCs)[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Talacotuzumab (1, 10, 30 mg/kg; s.c.; single injection) has maximal serum concentrations at 48 hours of ~12, 190, and 380 μg/ml at doses of 1, 10, and 30 mg/kg in naive cynomolgus monkeys, respectively[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Nonobese diabetic/severe combined immunodeficiency mice injected intravenously AML xenograft cells (AML-5)[1]
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Dosage:300 μg
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Administration:IP; thrice weekly for 5 weeks
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Result:Resulted in a significant delay in tumor growth compared with an isotype control.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| 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 IL-3R alpha/CD123 Protein, Human can bind Talacotuzumab. The EC50 for this effect is 6.855 ng/mL. -
Flow cytometric analysis of 1.5X106 THP-1 cells labeling Talacotuzumab (HY-P99395, red). Cells were fixed with 4% paraformaldehyde. Then stained with the primary antibody at 1/200 dilution for an hour at 4℃. 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 (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. Nr. 1826831-79-1
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Appearance Liquid
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Molecular Weight 147.42 kDa
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Color Colorless to light yellow
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SMILES
[Talacotuzumab]
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Synonyms
JNJ 56022473; CSL 362
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Versand
Shipping with dry ice.
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Formulation
Please refer to the lot-specific COA for specific buffer information.
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Speicherung
Please store the product under the recommended conditions in the Certificate of Analysis.
Publications (1)
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Journal Impact Factor
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Most Recent
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Nat Commun
CD200R1-CD200 checkpoint inhibits phagocytosis differently from SIRPα-CD47 to suppress tumor growth. [Abstract]2025 Jun 3;16(1):5145. PMID: 40461553
Reinheit & Dokumentation
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Data Sheet (263 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)
Verweise
[1]. S J Busfield, et al. Targeting of acute myeloid leukemia in vitro and in vivo with an anti-CD123 mAb engineered for optimal ADCC. Leukemia. 2014 Nov;28(11):2213-21. [Content Brief]
[2]. Shereen Oon, et al. A cytotoxic anti-IL-3Rα antibody targets key cells and cytokines implicated in systemic lupus erythematosus. JCI Insight. 2016 May 5;1(6):e86131. [Content Brief]
[3]. Erwin M Lee, et al. Efficacy of an Fc-modified anti-CD123 antibody (CSL362) combined with chemotherapy in xenograft models of acute myelogenous leukemia in immunodeficient mice. Haematologica. 2015 Jul;100(7):914-26. [Content Brief]
[4]. L H Xie, et al. CD123 target validation and preclinical evaluation of ADCC activity of anti-CD123 antibody CSL362 in combination with NKs from AML patients in remission. Blood Cancer J. 2017 Jun 2;7(6):e567. [Content Brief]
Calculators
Konzentration (Stammlösung) × Volumen (Stammlösung) = Konzentration (Ziellösung) × Volumen (Ziellösung)