爱斯坦-巴尔病毒重编程自动反应性B细胞成为系统性红斑狼中的抗原呈现细胞
Shady Younis1,2, Salvinaz I Moutusy1,2, Sajede Rasouli1,2
1Division of Immunology and Rheumatology, Stanford University, Stanford, CA 94305, USA.
Science translational medicine
|November 12, 2025
概括
爱斯坦-巴尔病毒 (EBV) 感染在患有全身性红斑狼 (SLE) 的患者中重新编程自主反应性B细胞. 这些EBV阳性B细胞通过呈现自身抗原和激活T细胞来驱动自身免疫,促进SLE的发病.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 基因组学就是基因组学.
背景情况:
- 系统性红斑狼 (SLE) 是一种与爱斯坦-巴尔病毒 (EBV) 相关的自身免疫性疾病.
- 对于EBV在SLE发病过程中的确切作用尚不完全理解.
- 产生抗核抗体 (ANA) 的自主反应性B细胞是SLE的核心.
研究的目的:
- 调查EBV感染如何影响SLE中自反应性B细胞.
- 阐明EBV对SLE自身免疫有所贡献的分子机制.
主要方法:
- 开发一种针对EBV的单细胞RNA测序平台.
- 对ChIP-seq,ATAC-seq和RNA聚合酶II占用数据的综合分析.
- 来自SLE EBV+ B细胞的复合抗体的表达和特征.
主要成果:
- 在SLE患者中,EBV感染会重编程自身反应性B细胞.
- SLE中的EBV+B细胞具有特定的表面标记 (CD27+,CD21low) 的特征,并表达ZEB2和T-bet.
- 在这些重新编程的B细胞中,EBV核抗原2 (EBNA2) 直接调节关键基因.
- 来自EBV+B细胞的抗体识别SLE特异性的核自身抗原.
- EBV+B细胞作为抗原呈现细胞起作用,激活T辅助细胞并驱动进一步的B细胞激活.
结论:
- EBV感染是SLE的机械驱动因素,通过重编程自身反应性B细胞.
- 重编程的EBV+B细胞作为强大的抗原呈现细胞,促进SLE的自身免疫反应.
- 这项研究为EBV和SLE之间的关联提供了分子基础.
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