根据免疫缺陷的类型和严重程度,SARS-CoV-2病毒清除和进化有所不同
Yijia Li1,2,3, Manish C Choudhary1, James Regan1,4
1Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Science translational medicine
|January 24, 2024
概括
严重免疫抑制的个体,特别是来自血液恶性瘤或移植的个体,面临长期的SARS-CoV-2感染. 这突显了各种风险,以及B细胞和T细胞免疫在清除病毒中的关键作用.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 传染性疾病 传染性疾病
背景情况:
- 免疫功能低下的个体尽管有可用的治疗方法,但很容易患上长期的SARS-CoV-2感染.
- 导致2019年持续性冠状病毒病 (COVID-19) 的特定免疫缺陷尚未完全理解.
研究的目的:
- 在各种免疫受损人群中调查持续的SARS-CoV-2感染的病毒免疫学特征.
- 识别与长时间病毒分泌和治疗抗体耐药性相关的免疫缺陷.
主要方法:
- 潜在的队列研究,涉及COVID-19患者的详细病毒免疫学分析.
- 在不同免疫抑制组的病毒清除时间 (RNA和培养) 的比较.
- 评估SARS-CoV-2的演变,治疗抗体耐药性,以及特定的幽默和T细胞反应.
主要成果:
- 由于血液性恶性瘤或移植 (S-HT) 导致严重免疫抑制的个体与其他组相比,鼻病毒RNA (72天) 和培养清除 (40天) 的中位数时间明显较长.
- 严重免疫受损的参与者表现出更大的SARS-CoV-2进化和对单克隆抗体耐药性的风险增加.
- 由于自身免疫或B细胞缺乏 (S-A) 的原因,S-HT和严重免疫抑制组都显示了SARS-CoV-2特异性幽默反应的减少;只有S-HT组减少了T细胞反应.
结论:
- 持续的COVID-19风险在不同的免疫抑制条件之间有很大差异.
- 抑制B细胞和T细胞反应是持续性SARS-CoV-2感染的最高风险因素.
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