J Clin Invest:SARS-CoV-2感染恢复的患者体内出现持续细胞免疫失调

2021-01-30 MedSci原创 MedSci原创

SARS-CoV-2会引起多种病理表现,导致较高的死亡率,需要了解疾病的发病机制,为疫苗设计提供信息,并对潜在的免疫特征进行研究。近日,发表于J Clin Invest的一项研究中,研究人员探究了住院

SARS-CoV-2会引起多种病理表现,导致较高的死亡率,需要了解疾病的发病机制,为疫苗设计提供信息,并对潜在的免疫特征进行研究。近日,发表于J Clin Invest的一项研究中,研究人员探究了住院和非住院患者的免疫细胞亚群,结果显示SARS-CoV-2感染后患者免疫失调的时间较长,需要更多的研究来调查患者免疫失调的情况。

住院患者的T细胞活化标志物(CD69、OX40、HLA-DR和CD154)频率增加,其他T细胞活化/耗竭标志物(PD-L1和TIGIT)在住院和非住院患者中仍然升高。B细胞具有类似的激活/耗竭模式,住院期间CD69和CD95的频率增加,随后非住院个体的PD1频率增加。有趣的是,在非住院的纵向样本中,这些变化中的许多变化随着时间的推移而增加,表明SARS-CoV-2感染后免疫失调的时间很长。在非住院患者中发现T细胞活化/耗竭的变化与年龄呈正相关。严重感染者的活化和耗竭标志物表达增加。

图 ICU患者中CD4+T细胞、CD8+T细胞和B细胞标志物表达激活或衰竭的频率

综上所述,这些数据表明,SARS-CoV-2感染后免疫失调的时间较长,这突出表明需要进行更多的研究,调查疗养者的免疫失调情况。

 

原始出处:

 

Jacob K Files, Sushma Boppana, et al., Sustained cellular immune dysregulation in individuals recovering from SARS-CoV-2 infection. J Clin Invest. 2021 Jan 4;131(1):e140491. doi: 10.1172/JCI140491.

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    2021-09-01 hukaixun
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    2021-02-01 小刀医生
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