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Lirentelimab
CAS No. : 2283348-97-8
MCE 国际站:Lirentelimab
产品活性:Lirentelimab (AK002) 是一种人源化 IgG1 单克隆抗体,靶向唾液酸结合的 Ig 样凝集素 8 (SIGLEC8)。Lirentelimab 诱导 IL-5 激活的嗜酸性粒细胞细胞凋亡并抑制 IL-5 介导的肥大细胞激活。Lirentelimab 可用于嗜酸性胃炎、十二指肠炎的研究。
研究领域:Apoptosis
作用靶点:Apoptosis
In Vitro: Monovalent Lirentelimab fragment antigen-binding (fab) binds to recombinant SIGLEC8 extracellular domain (ECD) is determined to be 464 pM. Lirentelimab shows high affinity to SIGLEC8 in vitro, to SIGLEC8 expressed on eosinophils, and to NK cells via its Fc region in human blood. Lirentelimab (1 g/mL) selectively binds to eosinophils in human peripheral blood, and eosinophils and mast cells from human lung tissue. Lirentelimab (0.0001-100 μg/mL; 30 min) induces apoptosis of IL-5-activated eosinophils. 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. Lirentelimab reduces eosinophil numbers in ex vivo human tissue.
In Vivo: Lirentelimab (100 μg; i.v. once) significantly inhibits IgE-mediated mast cell activation in a mice model of systemic anaphylaxis.
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