AT-1413
AT-1413 is a monoclonal antibody targeting CD43s that recognizes a unique sialylated CD43 epitope spanning amino acid residues 133-165. AT1413 induces antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) in AML cells, with EC50 values of 1.1 nM and 12.4 nM, respectively. AT-1413 binds to a variety of cancer cells, shows weak binding to non-malignant myeloid cells and endothelial cells, and does not bind to healthy lymphoid cells or normal non-hematopoietic cells. AT1413 clears CD43s-expressing leukemic blasts in vivo without affecting non-malignant myeloid cells. AT-1413 can be used in research related to acute myeloid leukemia, myelodysplastic syndrome, melanoma, and breast cancer.
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Stockage:
Please store the product under the recommended conditions in the Certificate of Analysis.
Activité biologique
Human IgG1 kappa
Human
CD43
AT-1413 (0.5-1.25 µg/mL) binds to CD43s on melanoma cell lines, some breast cancer cell lines, myeloid leukemia cell lines, as well as 86% of short-term cultured melanoma samples, as detected by flow cytometry[1].
AT-1413 (10 µg/mL) binds to CD43s in 72% of melanoma tissue samples, but does not bind to adjacent healthy skin cells, as detected by immunohistochemistry[1].
AT-1413 (3 h) recognizes the sialylated epitope of CD43 (CD43s) on the 136.2 and A375 melanoma cell lines[1].
AT-1413 (1-25 µg/mL; 4 h) induces antibody-dependent cellular cytotoxicity against the A375, 136.2 and BLM melanoma cell lines, as well as the patient-derived melanoma samples MEL12.07, MEL06.07 and MEL99.08, in vitro[1].
AT1413 (0.001-20 μg/mL) potently induces antibody-dependent cell-mediated cytotoxicity (ADCC) and complement-dependent cytotoxicity (CDC) in SH2-type AML cells in vitro, with EC50 values of 1.1 nM and 12.4 nM, respectively, but does not induce cytotoxicity in non-malignant HAEC, HUVEC or healthy granulocytes[2].
AT1413 (3 h) specifically binds to the unique sialylated epitope (CD43s) located between amino acid residues 133 and 165 of the CD43 protein, which is expressed in human THP-1 and Molm13 acute myeloid leukemia (AML) cell lines as well as the mouse WEHI-3b AML cell line[2].
AT1413 specifically binds to CD43s on the surface of AML/MDS blasts, human AML cell lines, and mouse WEHI-3b AML cells, while it shows weak binding to some non-malignant myeloid cells and endothelial cells, and no binding to healthy lymphoid cells or non-hematopoietic cells[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
AT-1413 (15 mg/kg; i.v.; biweekly) potently eliminates human AML blasts in humanized NSG mice without affecting nonmalignant human myeloid cells[2].
AT-1413 (15 mg/kg; i.v.; biweekly) reduces AML tumor growth in nonhumanized NSG mice[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:NSG mice (NOD.Cg- PrkdcscidIl2rgtm1Wjl/SzJ) (female newborn, human immune system reconstituted, sublethally irradiated, inoculated with human AML cell line SH2 cells)[2]
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Dosage:15 mg/kg
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Administration:i.v.; biweekly; starting day 19 after AML cell inoculation
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Result:Strongly inhibited AML tumor growth via whole-body bioluminescence measurement.
Eliminated AML infiltration in bone, liver, gut, lung, and spleen.
Maintained similar proportions of nonmalignant human CD45+ cells (including T cells, B cells, NK cells, and granulocytes) compared to control antibody-treated mice.
Caused only transient reduced food intake and weight loss after the first injection, with no other significant adverse effects.
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Animal Model:NSG mice (NOD.Cg- PrkdcscidIl2rgtm1Wjl/SzJ) (nonhumanized, inoculated with luciferase-labeled human AML cell line SH2 cells)[2]
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Dosage:15 mg/kg
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Administration:i.v.; biweekly
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Result:Demonstrated efficacy against luciferase-labeled SH2 AML cells.
Unconjugated
The product can be reconstituted/diluted with sterile PBS or saline.
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Product Image
ELISA, FACS, Functional assay
Chemical Information
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Appearance Liquid
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Color Colorless to light yellow
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SMILES
[AT-1413]
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Livraison
Shipping with dry ice.
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Formulation
Please refer to the lot-specific COA for specific buffer information.
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Stockage
Please store the product under the recommended conditions in the Certificate of Analysis.
Pureté et documentation
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Fiche technique (262 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)
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- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Inhibitory Antibodies User Guide (603 KB)
Références
[1]. de Jong G, et al. Melanoma cells can be eliminated by sialylated CD43 × CD3 bispecific T cell engager formats in vitro and in vivo. Cancer immunology, immunotherapy : CII. 2021 Jun;70(6):1569-1581. [Content Brief]
[2]. Gillissen MA, et al. Patient-derived antibody recognizes a unique CD43 epitope expressed on all AML and has antileukemia activity in mice. Blood advances. 2017 Aug 22;1(19):1551-1564. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)