455-EBV与HLA-DR15协同驱动多发性硬化症研究 episode artwork

EPISODE · Jan 31, 2026 · 17 MIN

455-EBV与HLA-DR15协同驱动多发性硬化症研究

from 聊聊Sci

这项研究探讨了爱泼斯坦-巴尔病毒 (EBV)与人类白细胞抗原 (HLA)-DR15 基因型在多发性硬化症 (MS)发病中的协同作用机制。研究人员发现,EBV感染会重新编程B细胞的转录组,从而改变其抗原处理方式,导致特定的髓鞘碱性蛋白 (MBP) 肽段被呈递给免疫系统。这些由EBV诱导产生的自身抗原肽能够激活MS患者体内的致病性CD4+ T细胞,且这些细胞在患者的脑脊液中同样存在。值得注意的是,这些特定的MBP片段并未在胸腺中被检测到,这意味着免疫系统无法通过常规的中央耐受机制将其清除。该成果揭示了环境病毒感染如何通过改变细胞代谢与蛋白质降解,诱发针对神经系统的自身免疫反应。这一发现为理解遗传易感性与病毒诱因如何共同导致神经系统损伤提供了关键的分子基础。References: Wang J, Qiu Y, Marti Z, et al. EBV infection and HLA-DR15 jointly drive multiple sclerosis by myelin peptide presentation[J]. Cell, 2026.前往小宇宙评论区与主播互动

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455-EBV与HLA-DR15协同驱动多发性硬化症研究

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