神经PASC的特征是增强的CD4+和减少的CD8+T细胞对SARS-CoV-2核囊蛋白的反应
Lavanya Visvabharathy1, Barbara A Hanson1, Zachary S Orban1
1Ken and Ruth Davee Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.
长期COVID的神经症状 (Neuro-PASC) 与不同的免疫反应有关. 神经PASC患者表现出改变的T细胞活性和炎症标志物,影响疾病严重程度和神经认知.
科学领域:
- 免疫学 免疫学 免疫学
- 神经学 神经学
- 传染性疾病 传染性疾病
背景情况:
- 长期COVID,或SARS-CoV-2感染 (PASC) 的后急性后续,经常包括衰弱的神经症状 (Neuro-PASC).
- 神经PASC对病毒特异性免疫反应的影响尚不清楚.
- 调查免疫特征可能会澄清神经PASC病变的发生.
研究的目的:
- 在Neuro-PASC.患者中识别独特的免疫学特征.
- 为了比较Neuro-PASC患者和健康的COVID康复者之间对SARS-CoV-2核体蛋白的T细胞和抗体反应.
- 为了将免疫激活模式与神经症状严重程度相关联.
主要方法:
- 对T细胞反应 (CD4+和CD8+) 和对SARS-CoV-2核囊蛋白的抗体反应的分析.
- 使用功能测试和T细胞受体 (TCR) 测序.
- 评估了血细胞因子水平和神经认知功能.
主要成果:
- 神经PASC患者表现出较高的CD4+ T细胞反应和较低的CD8+记忆T细胞向核囊蛋白激活.
- CD8+ T细胞IL-6的产生与血IL-6的增加和神经系统症状严重程度的增加相关,包括疼痛.
- 在Neuro-PASC患者中观察到免疫调节率升高和抗炎/抗病毒特征降低,与神经认知缺陷相关.
结论:
- 独特的病毒特异性细胞免疫模式与神经PASC相关.
- 这些发现提供了长期COVID神经复杂症的病原体的见解.
- 这些数据支持开发预测生物标志物和针对神经PASC的向治疗方法.
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