| Description | Rozanolixizumab (RYSTIGGO) is a high-affinity humanized immunoglobulin G4 monoclonal antibody targeting Fc receptors (FcRn) in human newborns for the study of pathogenic IgG in autoimmune and alloimmune diseases. |
| In vitro | Rozanolixizumab 在 pH 6.0(对人类及猕猴分别为 Kd 23 pM 与 25 pM)和 pH 7.4(对人类及猕猴分别为 34 pM 与 53 pM)时均展现出对人类及猕猴 FcRn 的相似亲和力。Rozanolixizumab 能剂量依赖性地抑制通过人类 FcRn 转染的 MDCK 细胞回收人类 IgG,IC50 值为 0.41 nM;在猕猴 FcRn 转染的 MDCK 细胞中对 IgG 回收的抑制作用相似(IC50 值为 0.98 nM)。此外,Rozanolixizumab 还会增加细胞内 IgG AF647 的含量。 |
| In vivo | 展示了非线性药动学特征,指示了目标介导的化合物分布行为,静脉注射(IV)给予Rozanolixizumab给猕猴时,发现单次IV剂量(30 mg/kg)在给药后第7天可使血浆IgG浓度降低69%。在为期42天的治疗期间,每日IV给予Rozanolixizumab(初始负荷剂量为30 mg/kg;此后每日5 mg/kg)在所有猕猴中持续降低血浆IgG浓度,保持低浓度[1]。 |
| Target activity | MDCK cells:0.98 nM, FcRn (human):23 pM(Kd), FcRn (monkey):25 pM(Kd) |
| Synonyms | UCB7665 |
| molecular weight | N/A |
| CAS | 1584645-37-3 |
| Storage | store at low temperature | store at -20°C |
| References | 1. Smith B, et al. Generation and characterization of a high affinity anti-human FcRn antibody, rozanolixizumab, and the effects of different molecular formats on the reduction of plasma IgG concentration. MAbs. 2018;10(7):1111-1130. |