循环白细胞中的表观遗传和转录反应与SARS-CoV-2感染期间的未来脱补偿有关
Micah T McClain1,2, Ilya Zhbannikov3, Lisa L Satterwhite4
1Division of Infectious Diseases, Duke University Medical Center, Durham, NC 27710, USA.
iScience
|January 5, 2024
概括
在COVID-19患者的早期免疫细胞变化预测临床失补偿. 在入院时分析外周血液单核细胞 (PBMC) 的表观遗传和转录组概况,可以确定患有严重疾病进展高风险的患者.
科学领域:
- 免疫学 免疫学 免疫学
- 基因组学就是基因组学.
- 传染性疾病 传染性疾病
背景情况:
- SARS-CoV-2 感染导致显著的发病率和死亡率.
- 在COVID-19患者中预测临床失补偿仍然是一个挑战.
- 主体免疫反应对于确定COVID-19的严重程度至关重要.
研究的目的:
- 确定宿主反应元素,预测住院COVID-19患者即将发生的脱补偿.
- 为了比较患者的免疫特征,他们改善了与那些谁失补偿.
- 为确定COVID-19严重程度的早期生物标志物.
主要方法:
- 结合的单细胞RNA测序 (scRNA-seq) 和单细胞测定用于对外置酶可访问的染色体,使用对外围血液单核细胞 (PBMC) 的测序 (scATAC-seq).
- 在入院时分析染色质可访问性和转录性免疫特征.
- 在改善和临床失补偿的患者之间比较免疫特征.
主要成果:
- 在患者组之间观察到染色质可访问性和转录性免疫特征的显著变化.
- 关键的细胞类型显示改变的配置文件包括CD4+T细胞,炎症T细胞,树突细胞和NK细胞.
- 住院时的多原子特征得分与未来的临床恶化有很强的相关性 (auROC 1.0).
结论:
- 在PBMCs中的表观遗传和转录性变化是COVID-19中免疫失调的早期指标.
- 这些多原子签名在明显的临床脱补偿迹象之前.
- 来自PBMC的多原子签名可以作为COVID-19严重程度的预测生物标志物.
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