Benralizumab (MEDI-563) 是一种白介素 5 受体 α (IL-5Rα) 定向的溶细胞单克隆抗体，通过增强抗体依赖性细胞介导的细胞毒性诱导嗜酸性粒细胞直接，快速和几乎完全耗尽。Benralizumab 可用于严重的嗜酸性哮喘。

Benralizumab (MEDI-563) is an interleukin-5 receptor α (IL-5Rα)-directed cytolytic monoclonal antibody that induces direct, rapid and nearly complete depletion of eosinophils via enhanced antibody-dependent cell-mediated cytotoxicity. Benralizumab can be used for severe eosinophilic asthma.

Liquid

IL-5Rα

Benralizumab (MEDI-563) binds to recombinant human and cynomolgus monkey IL-5Rα extracellular domains with a dissociation constant of 11 and 42 pM, respectively.
Benralizumab (1 pM-100 nM, 48 h) inhibits IL-5–induced proliferation of CTLL-2 cells transfected with recombinant human IL-5Rαβ with an IC50 of 0.3 nM.
Benralizumab binds only to the constructs containing human IL-5Rα D1.
Benralizumab mediates ADCC (antibody-dependent cell-mediated cytotoxicity) of human eosinophils and basophils with EC50s of 0.9 pM and 0.5 pM, respectively, and mediates eosinophil apoptosis. has not independently confirmed the accuracy of these methods. They are for reference only.

Benralizumab (MEDI-563) (0-30 mg/kg; i.v.; once every 3 weeks for 12 weeks) reduces peripheral blood and bone marrow eosinophil. has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: Female

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[1]. Menzies-Gow A, et al. Corticosteroid tapering with benralizumab treatment for eosinophilic asthma: PONENTE Trial. ERJ Open Res. 2019 Sep 25;5(3). pii: 00009-2019.
[2]. Kolbeck R, et al. MEDI-563, a humanized anti-IL-5 receptor alpha mAb with enhanced antibody-dependent cell-mediated cytotoxicity function. J Allergy Clin Immunol. 2010 Jun;125(6):1344-1353.e2.