相关实验视频

Updated: Jan 16, 2026

Author Spotlight: Novel Assay for Studying B-Cell Responses in Multiple Sclerosis Research

Author Spotlight: Novel Assay for Studying B-Cell Responses in Multiple Sclerosis Research

Published on: December 1, 2023

神经元反应性KIR⁺CD8⁺ T细胞在自身免疫性脑炎中表现出一种脑性转录程序

Sylvain Perriot¹, Samuel Jones¹, Raphaël Genolet^2,3

¹Laboratory of Neuroimmunology, Neuroscience Research Centre, Department of Clinical Neurosciences, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.

Nature communications

|September 29, 2025

概括

研究人员在自身免疫性脑炎 (AIE) 中确定了神经元反应的CD8+T细胞. 这些细胞被确定为细胞毒性KIR⁺CD8⁺调节性T细胞,表现出失调的活动,可能有助于抗Ri脑炎 (Ri-AIE) 病原体.

科学领域:

神经免疫学神经免疫学
T细胞生物学T细胞生物学
自身免疫性疾病自身免疫性疾病

背景情况:

自身免疫性脑炎 (AIE) 的发病因子尚未完全理解.
自主反应性CD8⁺ T细胞准神经元是有连的,但缺乏直接证据.
确定涉及AIE的特定T细胞种群对于了解疾病机制至关重要.

研究的目的:

在抗Ri脑炎 (Ri-AIE) 患者中识别和表征神经元反应性CD8⁺ T细胞.
调查这些T细胞的表型和功能状态.
探索这些细胞在Ri-AIE病原发生中的潜在作用.

主要方法:

利用人类诱导的多能干细胞衍生神经元进行抗原呈现试验.
在来自Ri-AIE患者和对照者的ex vivo CD8⁺ T细胞上进行单细胞RNA测序.
分析了关键调节和激活标记物的基因表达 (KIR,Helios,TOX,TNF,IFNG).

主要成果:

在健康捐赠者和Ri-AIE患者中确定了神经元反应性CD8⁺ T细胞.
这些细胞被描述为细胞毒性KIR⁺CD8⁺调节性T细胞.
Ri-AIE患者的KIR和Helios表达减少,TCR信号,TNF和IFNG增加.
在Ri-AIE患者衍生的T细胞中观察到 TOX表达升高,与脑致死性潜力相关.

结论:

神经元反应性细胞毒性KIR⁺CD8⁺ T细胞的失调活动可能有助于Ri-AIE.
这些发现为自身免疫性脑炎的细胞机制提供了新的见解.
对这些特定的T细胞群体的进一步研究可能会导致AIE的新疗法策略.

更多相关视频

Flow Cytometric Analysis of Lymphocyte Infiltration in Central Nervous System during Experimental Autoimmune Encephalomyelitis

Flow Cytometric Analysis of Lymphocyte Infiltration in Central Nervous System during Experimental Autoimmune Encephalomyelitis

Published on: November 17, 2020

Hippocampal Neuronal Cultures to Detect and Study New Pathogenic Antibodies Involved in Autoimmune Encephalitis

Hippocampal Neuronal Cultures to Detect and Study New Pathogenic Antibodies Involved in Autoimmune Encephalitis

Published on: June 2, 2022

相关概念视频

T Cell Activation and Clonal Selection

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T Cells-mediated Immune Response

Cytotoxic T cells are a vital component of the immune system. They have the remarkable ability to identify and target antigens on infected or abnormal cells. These antigens often originate from intracellular pathogens such as viruses or abnormal proteins cancer cells produce.
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...