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CD11c^高 B细胞扩张与光学神经omyelitis中的严重性和大脑缩有关

Eiichiro Amano¹, Wakiro Sato¹, Yukio Kimura¹

¹From the Department of Immunology (E.A., W.S., A.K., T. Yamamura), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Neurology and Neurological Sciences (E.A., T. Yokota), Tokyo Medical and Dental University, Bunkyo; Department of Radiology (Y.K., N.S.); and Department of Neurology (Y.L., T.O.), National Center Hospital, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan.

Neurology(R) neuroimmunology & neuroinflammation

|February 13, 2024

概括

在神经髓炎光学 (NMO) 患者中增加的CD11c^高 B细胞与疾病严重程度和大脑缩相关. 这一发现表明这些B细胞在慢性神经炎症中发挥着作用,即使在缓解期间也是如此.

科学领域:

免疫学免疫学免疫学
神经科学是一个神经科学.
自免疫性疾病自免疫性疾病

背景情况:

光学神经炎 (NMO) 是一种由抗水素-4 (AQP4) 抗体产生B细胞驱动的自身免疫性星细胞病.
一个特定的B细胞子集,CD11c^高T-bet⁺ (与年龄相关的B细胞),与各种自身免疫疾病有关.

研究的目的:

调查外周血液中CD11c^高B细胞的频率与NMO患者的临床特征之间的关联.
在NMO患者中探索CD11c^高B细胞频率与大脑体积之间的相关性.

主要方法:

一项观察性研究包括45名NMO患者缓解和30名健康对照 (HCs).
使用流细胞计量量化CD11c^高B细胞 (每CD19⁺B细胞) 并分析免疫细胞表型.
分析了脑MRI数据,以评估CD11c^高B细胞频率和脑缩之间的关系.

主要成果:

与HC相比,患有NMO的患者表现出CD11c^高B细胞的频率明显高.
CD11c^高 B 细胞扩张与扩展残疾状况量表 (EDSS) 得分增加,复发史和疾病持续时间相关.
较高的CD11c^高 B细胞频率与大脑总体体积,白质和灰质体积的减少以及T2/FLAIR损伤体积的增加有关.
在CD11c^高B细胞扩张的NMO患者中,大脑复发的频率更高.
CD11c^高 B细胞显示出迁移和抗原呈现的特征,它们的频率与外围T辅助-1 (Tph-1) 细胞频率呈正相关.

结论:

CD11c^高 B细胞可以在NMO患者中扩大,可能通过Tph-1细胞相互作用,甚至在缓解期间.
CD11c^高 B细胞的高频率与NMO的脑缩和疾病严重程度有关.
这种B细胞子集可能在NMO的慢性神经炎症特征中发挥作用.

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