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使用有针对性的光动力学疗法耗尽自动反应性B细胞

Kevin R Venrooij¹, Theodoros Ioannis Papdimitriou², Daphne N Dorst^1,2

¹Institute of Molecules and Materials, Synthetic Organic Chemistry, Radboud University, Heyendaalseweg 135, Nijmegen 6525 AJ, The Netherlands.

ACS pharmacology & translational science

|October 16, 2025

概括

向光动力学疗法 (tPDT) 使用一种新的构造选择性地消除自反应性B细胞. 这种方法节省了健康的B细胞,为类风湿性关节炎 (RA) 等自身免疫性疾病提供了有前途的治疗方法.

科学领域:

免疫学免疫学免疫学
生物技术是生物技术.
照相医疗 (photomedicine) 是一种医学.

背景情况:

像风湿性关节炎 (RA) 这样的自身免疫性疾病涉及自身反应性B细胞驱动病理.
目前的B细胞消耗疗法缺乏特异性,导致广泛的免疫缺陷.

研究的目的:

开发一种向疗法,选择性地消除自身反应性B细胞.
为了研究针对性光动力学治疗 (tPDT) 为此目的的疗效.

主要方法:

设计了一种具有二极性抗原 (diCCP4) 的结构,针对特定的自反应性B细胞受体 (BCR).
将光敏剂IRDye700DX纳入结构中.
在修改后的拉莫斯B细胞线上测试了构造,表达了目标BCR.
在3D共培养中与外周血液单核细胞 (PBMCs) 暴露光线后评估细胞活力.

主要成果:

在光激活时,tPDT构造有选择地消除了在光激活时表达自主反应BCR的修饰Ramos B细胞.
该结构对缺乏标BCR的细胞没有细胞毒性.
共同培养实验表明对非向细胞的影响最小.

结论:

向光动力学疗法 (tPDT) 有效地和选择性地消除自反应性B细胞.
这种方法有可能治疗像RA这样的自身免疫性疾病,并减少副作用.
需要进一步的研究来将这种疗法转化为临床应用.

关键词:

针对抗原选择性的B细胞向.自身免疫性疾病是一种自身免疫性疾病.多价抗原是一种多价抗原.摄影敏感剂摄影敏感剂有针对性的光动力学治疗.

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