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致命的COVID-19肺部的分子和免疫特征以及病理轨迹,通过现场空间单细胞转录组分析来定义

Arun Das^1,2, Wen Meng^1,3, Zhentao Liu^1,4

¹Cancer Virology Program, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.

Journal of medical virology

|August 11, 2023

概括

这项研究使用现场测序来绘制单细胞分辨率的COVID-19肺病理图. 致命的COVID-19肺部显示细胞组成和空间免疫透的改变,揭示了疾病进展中的复杂细胞相互作用.

科学领域:

病理学病理学病理学
分子生物学分子生物学
基因组学就是基因组学.

背景情况:

尽管进行了广泛的研究,但2019年新冠肺炎疾病 (COVID-19) 的确切病理和分子机制仍然不完全理解.
了解严重的COVID-19肺组织的细胞和分子格局对于开发有效的治疗方法至关重要.

研究的目的:

为了研究死后COVID-19肺组织的空间单细胞分子和细胞特征.
为了确定致命的COVID-19肺病理中的关键细胞参与者,分子变化和空间组织模式.

主要方法:

在现场测序 (ISS) 用于分析整个幻灯片死后的COVID-19肺组织.
检查了COVID-19和异常性肺纤维化 (IPF) 肺部的单细胞RNA测序 (scRNA-seq) 数据.
免疫光染色被用于验证分子通路激活.

主要成果:

在所有主要的辅酶体和免疫细胞类型中检测到SARS-CoV-2感染.
在COVID-19肺部,膜细胞减少,免疫细胞增加,感染和炎症的空间模式明显.
组织性肺炎 (OP) 区域的特点是纤维细胞表达高水平的原基因 (COL1A1,COL1A2),与IL6-STAT3和TGF-β-SMAD2/3通路激活相关.

结论:

这项研究提供了致命的COVID-19肺病理学的综合空间单细胞地图.
这些发现揭示了复杂的细胞异质性,组织和相互作用驱动COVID-19肺损伤和纤维化.
确定了两个不同的病理路线,一个涉及微生物感染并发症,另一个以增加免疫透和组织肺炎为特征.

关键词:

在 IL6-STAT3 中.这就是SARS-CoV-2病毒.在TGF-β-SMAD2/3/3中.冠状病毒疾病2019 (COVID-19) 是一种新型冠状病毒疾病.纤维化纤维化在现场测序 (ISS)邻近细胞类型组合分析 (NCTC)组织肺炎的组织.稀疏非负矩阵因子化分析 (SNMF)轨迹推断的推断是指轨迹的推断.

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