双特异性自身抗原-T细胞参与剂作为针对自身反应性B细胞枯竭在自身免疫性疾病的向免疫治疗
Luca Perico1, Federica Casiraghi1, Fabiane Sônego2
1Department of Molecular Medicine, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy.
Frontiers in immunology
|March 12, 2024
概括
一种新型疗法,双特异性AutoAntigen-T细胞参与剂 (BiAATEs),针对自身免疫性疾病中的特定自身反应性B细胞. 这种方法对精确的,现成的治疗方法有希望,可能会彻底改变自身免疫性疾病的管理.
科学领域:
- 免疫学 免疫学 免疫学
- 自免疫性疾病 自免疫性疾病
- 治疗开发的治疗方法
背景情况:
- 自免疫性疾病涉及自反应性B细胞,占B细胞总数的一小部分.
- 目前的治疗方法不特定地抑制免疫系统,导致严重的副作用.
- 迫切需要针对自身免疫性疾病的向疗法.
研究的目的:
- 设计和评估针对自反应性B细胞的双特异性AutoAntigen-T细胞激活剂 (BiAATEs).
- 研究BiAATEs作为一种潜在的自身免疫性疾病的免疫治疗方法,使用膜性病 (MN) 作为原型.
主要方法:
- 开发了一种BiAATE分子,包括脂酶A2受体 (PLA2R) 的氨酸丰富 (CysR) 域和抗CD3单链可变片段 (scFv).
- 在MN患者的B细胞上实体测试BiAATE的疗效,评估T细胞介导的衰竭.
- 系统地给转基因人类CD3的小鼠服用BiAATE,以评估其对抗PLA2R抗体水平的影响.
主要成果:
- BiAATE成功诱导了MN患者的PLA2R特异性B细胞的T细胞依赖性枯竭,而保留了正常的B细胞.
- 系统性BIAATE在小鼠中使用,可在积极免疫接种后降低抗PLA2R抗体水平.
- 设计的BiAATE有效地在自身反应性B细胞和T细胞之间创建了免疫突触.
结论:
- BiAATEs代表了一类新的免疫治疗分子,具有针对性治疗自身免疫性疾病的潜力.
- 这种方法可能会导致通过精准医学来管理抗体介导的自身免疫疾病的范式转变.
- 作为一种现成的治疗方法,BiAATEs对于已知致病性自身抗原的各种自身免疫性疾病具有前景.
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