在多发性硬化症中,EBV会将自身反应的抗CNSB细胞重新编程为呈现抗原的细胞
bioRxiv : the preprint server for biology
|February 23, 2026
概括
爱斯坦-巴尔病毒 (EBV) 感染了多发性硬化症 (MS) 中的自身反应性B细胞,将它们重新编程成抗原呈现细胞 (APC). 在MS患者中,这些感染EBV的APC驱动有害的T细胞和B细胞对中枢神经系统 (CNS) 的反应.
科学领域:
- 神经免疫学 神经免疫学
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 多发性硬化症 (MS) 是中枢神经系统 (CNS) 的一种慢性自身免疫性疾病.
- 爱斯坦-巴尔病毒 (EBV) 感染与多发性硬化症的发展密切相关,但确切的机制尚不清楚.
- 感染EBV的B细胞在MS发病过程中的作用需要进一步阐明.
研究的目的:
- 研究EBV感染对MS患者B细胞的直接影响.
- 描述中枢神经系统内感染EBV的B细胞的功能和转录变化.
- 探索EBV感染的B细胞在MS中驱动自身反应性免疫反应的潜力.
主要方法:
- 来自多发性硬化患者血液和脑脊液 (CSF) 的EBV感染B细胞的分析.
- 描述B细胞子集,转录程序和抗原呈现细胞 (APC) 功能.
- 从EBV感染的B细胞中生成并测试复合抗体,用于中枢神经系统抗原结合.
- 在体外共同培养实验中,评估EBV感染的B细胞对T细胞的刺激.
主要成果:
- 在MS中,EBV直接感染自主反应性抗中枢神经系统抗原B细胞,将其重新编程为促炎性APC.
- 在MS中感染EBV的B细胞在CD27+CD21低内存子集中得到丰富,显示上调激活和APC程序.
- 感染EBV的B细胞的抗体与大脑组织结合,与中枢神经系统的自身抗原和EBV核抗原-1 (EBNA1) 发生交叉反应.
- 在体外,感染了EBV的B细胞刺激了外围T辅助细胞,并激活了其他B细胞.
结论:
- EBV感染将自身反应性B细胞重新编程为APC,从而建立了EBV和MS病原体之间的机制联系.
- 这些由EBV驱动的APCs促进致病性T细胞和B细胞的反应,向MS中枢神经系统.
- 准感染EBV的自身反应性B细胞可能为MS提供一种新的治疗策略.
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