在常见的可变免疫缺陷中,ICOS主激素vopratelimab调节毛囊辅助T细胞并改善B细胞功能
Ali Sepahi1, Hsi-En Ho2, Prapti Vyas3
1PharmaEssentia Innovation Research Center, Bedford, MA, United States; Concentra Biosciences, LLC, Cambridge, MA, United States.
常见的可变免疫缺陷 (CVID) 涉及B细胞成熟受损. 一种可诱导的T细胞共刺激剂 (ICOS) 激动剂,vopratelimab,恢复了T毛囊辅助细胞 (TFH) 和增强了B细胞功能,增加了CVID患者的免疫球蛋白产生.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 临床医学 临床医学
背景情况:
- 常见变性免疫缺陷 (CVID) 的特征是抗体水平低,B细胞分化不良.
- 毛囊辅助T (TFH) 细胞对于B细胞成熟和抗体产生至关重要.
- 在CVID中,TFH细胞子集和诱导性T细胞共刺激器 (ICOS) 表达变化.
研究的目的:
- 为了研究CVID患者的TFH细胞群.
- 为了评估vopratelimab的治疗潜力,一个ICOS激动剂,调节TFH细胞和B细胞功能.
- 评估普拉特利马布对CVID中免疫球蛋白产生的影响.
主要方法:
- 在CVID患者中分析TFH细胞子集 (TFH17,TFH1,TFH2) 和B细胞群.
- 在CD4+T细胞上测量ICOS表达.
- 在体外评估普拉特利马布对TFH细胞,B细胞成熟和免疫球蛋白分泌 (IgG,IgA) 的作用.
主要成果:
- 慢性肺炎患者表现出改变的TFH子集 (TFH17下降,TFH1增加) 和异常的B细胞群 (过渡性增加,记忆性降低的B细胞).
- 伏普拉特利马布治疗显著增加了TFH细胞,TFH2子组和IL-4,IL-10,IL-21分泌.
- 伏普莱利马布增强了B细胞成熟,增加了IgG1和IgA的分泌,并减少了CVID患者的过渡性B细胞.
结论:
- 通过ICOS激动体的TFH细胞调制显示出恢复CVID中的免疫功能具有前途.
- 伏普莱利马布有效地增强了B细胞成熟和免疫球蛋白的产生,这表明对抗体缺乏的治疗潜力.
- 对ICOS激动剂的进一步研究对于治疗CVID和其他抗体缺乏障碍是有必要的.
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