大脑驯服自身免疫

IF 27.7 1区 医学 Q1 IMMUNOLOGY
Nicholas J. Bernard
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引用次数: 0

摘要

血脑屏障曾被认为是为了防止外周免疫系统与中枢神经系统(CNS)相互作用,从而限制自身免疫。然而,在中枢神经系统抗原可以呈现给循环免疫细胞的边界存在一个淋巴系统,因此出现了如何维持对大脑结构的免疫耐受的问题。发表在《自然》(Nature)杂志上的一项基于质谱的小鼠中枢神经系统 MHC II 肽组筛选结果表明,调节性自体肽的呈现可以通过促进免疫抑制性 Tr1 样 CD4+ T 细胞在体内平衡过程中防止自体反应。作者的研究表明,用特异性髓鞘碱性蛋白(MBP)肽免疫小鼠不会像免疫髓鞘少突胶质细胞糖蛋白(MOG)那样引起病理或T细胞反应。事实上,用 MBP160-175 肽免疫小鼠甚至能防止神经炎症。他们使用四聚体系统标记这些肽的特异性 T 细胞,结果显示引流淋巴结中存在免疫抑制性 T 细胞谱系,其中有大量 MBP160-175 特异性 FOXP3- T 细胞,它们能产生调节分子 TGFβ 和 CTLA-4。作者还对EAE小鼠进行了筛查,发现肽组发生了转移,远离了这些保护性肽和呈现这些肽的抗原呈递细胞。将含有 MBP160-175 的细胞外囊泡注射到 EAE 小鼠的脑脊液中,会导致免疫抑制 T 细胞群的扩大和病理变化的减轻:自然 https://doi.org/10.1038/s41586-024-08279-y (2024)
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The brain tames autoimmunity
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来源期刊
Nature Immunology
Nature Immunology 医学-免疫学
CiteScore
40.00
自引率
2.30%
发文量
248
审稿时长
4-8 weeks
期刊介绍: Nature Immunology is a monthly journal that publishes the highest quality research in all areas of immunology. The editorial decisions are made by a team of full-time professional editors. The journal prioritizes work that provides translational and/or fundamental insight into the workings of the immune system. It covers a wide range of topics including innate immunity and inflammation, development, immune receptors, signaling and apoptosis, antigen presentation, gene regulation and recombination, cellular and systemic immunity, vaccines, immune tolerance, autoimmunity, tumor immunology, and microbial immunopathology. In addition to publishing significant original research, Nature Immunology also includes comments, News and Views, research highlights, matters arising from readers, and reviews of the literature. The journal serves as a major conduit of top-quality information for the immunology community.
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