Drugs:比马珠单抗治疗银屑病

2021-10-22 医路坦克 MedSci原创

银屑病是一种全身性、免疫介导的疾病,具有突出的皮肤和关节表现,Bimekizumab是首个治疗银屑病的双重IL-17A/IL-17F抑制剂,似乎是治疗银屑病的另一种有效和安全的治疗方案

        银屑病是一种慢性、全身性、免疫介导的疾病,具有突出的皮肤和关节表现,并伴有多种共病,包括血管疾病、代谢综合征和抑郁症。在过去的几十年里,对银屑病发病机制的认识的进步推动了高效靶向生物疗法的发展,改变了银屑病的治疗格局。研究证据表明,白细胞介素(IL)-23/IL-17免疫途径是银屑病炎症的关键因素,这支持了几种治疗银屑病的新的有效靶向疗法的开发,包括针对IL-17A的ixekizumab和seckinumab,针对IL-17受体亚单位的brodalab,以及针对IL-23的risankizumab、guselkumab和tildrakizumab。然而,仍然有一些患者对这些治疗没有反应,而另一些患者则随着时间的推移而失去疗效。药物失败可能是由于产生了针对药物的抗体,或者在其他情况下,它可能反映了潜在的免疫介导的炎症的冗余和可塑性。此外,一些患者可能会出现不良反应,导致停药。

      因此,仍然需要为那些没有改善或对目前可用的治疗不耐受的患者提供新的治疗方法。最近的数据表明,中和IL-17A和IL-17F可能比仅阻断IL-17A更有效。Bimekizumab比马珠单抗一种新型人源化抗体,能选择性结合和中和IL-17A和IL-17F的生物学功能。这里回顾了目前关于比马珠单抗治疗银屑病的知识。

      Bimekizumab是一种人源化的单克隆IgG1抗体,通过与IL-17A和IL-17F共有的氨基酸区域结合而起到IL-17A和IL-17F双重抑制剂的作用。与阻断IL-17RA并抑制IL-17A、IL-17F、IL-17C和IL-17E信号转导的溴铝单抗不同,比马珠单抗不影响IL-17C和IL-17E的功能;后者的细胞因子对人类细胞有抗炎作用。这种作用机制可以抑制IL-17A和IL-17F介导的生物学功能,包括IL-17A/IL-17A和IL-17F/IL-17F同源二聚体以及IL-17A/IL-17F异源二聚体。临床前研究表明,ixekizumab和bimekizumab对IL-17A的亲和力相当,但高于seckinumab,而bimekizumab中和IL-17F的能力是独一无二的。与单独抑制IL-17A相比,双重抑制IL-17A和IL-17F在体外对炎症细胞迁移、促炎细胞因子的产生和促炎基因表达(特别是与银屑病相关的基因)的减少更为显著。

     目前,正在研究bimekizumab治疗银屑病(已发表3期临床试验),银屑病关节炎(正在进行3期临床试验),强直性脊柱炎(正在进行3期临床试验),非放射性轴性脊柱关节炎(正在进行3期临床试验)和化脓性汗腺炎(3期)正在进行试验)。特别是,bimekizumab在之前发表和讨论过的1期和2期临床试验中显示出治疗银屑病的非常有希望的结果。在所有的3期试验中,bimekizumab的耐受性也很好,除了口腔念珠菌病的发生率更高之外,其安全性与其他被测试的生物药物相似。

     Bimekizumab是首个治疗银屑病的双重IL-17A/IL-17F抑制剂,已显示出治疗银屑病的高效和良好的安全性。3期研究的结果证实了早期研究的结果,也表明该药物在直接比较研究中优于adalimumab、ustekinumab和seckinumab。因此,双重抑制IL-17A和IL-17F似乎是治疗银屑病的另一种有效和安全的治疗方案。

文献来源:Freitas E,  Blauvelt A,  Torres T,Bimekizumab for the Treatment of Psoriasis.Drugs 2021 Oct 08

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    2021-12-23 wangbingxhy
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    2022-07-29 tsing_hit
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    2021-11-16 ms5000000753978789

    学习

    0

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    2021-10-23 病毒猎手

    #银屑病#现在是一片红海了,创新药太多了,大家挤破头了

    0

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