COVID-19 组织地图揭示了 SARS-CoV-2 的病理和细胞点
Toni M Delorey1, Carly G K Ziegler2,3,4,5,6,7, Graham Heimberg1
1Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA, USA.
Nature
|April 29, 2021
概括
这项研究揭示了SARS-CoV-2感染如何重塑肺组织,导致再生失败并影响心脏等其他器官. 了解这些COVID-19影响对于开发新疗法至关重要.
科学领域:
- 严重的SARS-CoV-2感染的病理生理学
- 对COVID-19的器官特异性细胞和分子反应
背景情况:
- 严重急性呼吸系统综合征-冠状病毒-2 (SARS-CoV-2) 导致COVID-19,导致急性呼吸系统应急综合征和多器官衰竭.
- 在多个器官中,SARS-CoV-2感染的详细病理生理和细胞后果仍然不完全理解.
研究的目的:
- 从COVID-19死者的尸体组织中生成综合单细胞和空间地图.
- 阐明严重的COVID-19中器官损伤和再生失败的细胞和分子机制.
主要方法:
- 从肺部,脏,肝脏和心脏解剖样本生成单细胞地图.
- 为肺组织创建空间地图.
- 综合计算分析多组数据以确定细胞重塑和宿主反应.
主要成果:
- 在肺上皮层,免疫和层中发现了显著的重塑,有组织再生失败的证据.
- 在特定的肺细胞类型 (单核细胞,内皮细胞) 中观察到病毒RNA的丰富,引发不同的宿主反应.
- 使用全基因组关联研究检测到心脏组织的转录性改变,并绘制与COVID-19严重程度相关的细胞类型/基因.
结论:
- 提供了一个基础数据集,阐明了多个器官中严重的SARS-CoV-2感染的生物影响.
- 突出缺陷的肺膜2型细胞分化和祖细胞扩张作为肺再生失败的机制.
- 提供对特定器官损伤和宿主反应的见解,为针对严重COVID-19的新疗法铺平了道路.
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