1864871-20-4
Chemical Structure
Cusatuzumab
Synonym(s): ARGX-110
- CAS No.: 1864871-20-4
- Formula:N/A
- Molecular Weight:(144.36 kDa)
IUPAC Name: ethyl 3-(2-(((4-carbamimidoylphenyl)amino)methyl)-1-(methyl-d3)-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoate
SMILES: [Cusatuzumab]
Biological Activity: Cusatuzumab (ARGX-110) is a selective competitive blocker targeting CD70 (with an equilibrium dissociation constant of 17 pM for binding to human CD70). Cusatuzumab also possesses enhanced antibody-dependent cell-mediated cytotoxicity (ADCC) activity. It is a humanized IgG1 monoclonal antibody, artificially synthesized through humanization and genetic engineering modifications (CH2 region mutation to enhance effector function). Cusatuzumab has a dual mechanism of action: firstly, it competitively blocks the interaction between CD70 and CD27, inhibiting the CD27-NF-κB signaling pathway, reducing regulatory T cell (Treg) activation and tumor cell proliferation; secondly, by enhancing binding to FcγRIIIa, it mediates ADCC and antibody-dependent cellular phagocytosis (ADCP), directly lysing CD70-positive tumor cells. Cusatuzumab can efficiently eliminate leukemia stem cells (LSCs), induce tumor cell differentiation and apoptosis, restore immune surveillance, and target CD70-positive tumors. Cusatuzumab is used in the study of acute myeloid leukemia (AML)[1][2].
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Cusatuzumab | 98.87% | Cusatuzumab (ARGX-110) is a selective competitive blocker targeting CD70 (with an equilibrium dissociation constant of 17 pM for binding to human CD70). Cusatuzumab also possesses enhanced antibody-dependent cell-mediated cytotoxicity (ADCC) activity. It is a humanized IgG1 monoclonal antibody, artificially synthesized through humanization and genetic engineering modifications (CH2 region mutation to enhance effector function). Cusatuzumab has a dual mechanism of action: firstly, it competitively blocks the interaction between CD70 and CD27, inhibiting the CD27-NF-κB signaling pathway, reducing regulatory T cell (Treg) activation and tumor cell proliferation; secondly, by enhancing binding to FcγRIIIa, it mediates ADCC and antibody-dependent cellular phagocytosis (ADCP), directly lysing CD70-positive tumor cells. Cusatuzumab can efficiently eliminate leukemia stem cells (LSCs), induce tumor cell differentiation and apoptosis, restore immune surveillance, and target CD70-positive tumors. Cusatuzumab is used in the study of acute myeloid leukemia (AML). | ||||||||||||||||||||
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- [1]. Silence K, et al. ARGX-110, a highly potent antibody targeting CD70, eliminates tumors via both enhanced ADCC and immune checkpoint blockade. MAbs. 2014 Mar-Apr;6(2):523-32. [Content Brief]
- [2]. Riether C, et al. Targeting CD70 with cusatuzumab eliminates acute myeloid leukemia stem cells in patients treated with hypomethylating agents. Nat Med. 2020 Sep;26(9):1459-1467. [Content Brief]
Keywords
