综合性组织病理学,空间和单细胞转录组学解决了COVID-19中早期和晚期膜损伤的细胞驱动因素
Jimmy Tsz Hang Lee1, Sam N Barnett2,3, Kenny Roberts1
1Wellcome Sanger Institute, Hinxton, UK.
Nature communications
|March 11, 2025
概括
COVID-19肺部损伤涉及明显的巨细胞变化和上皮/内皮细胞损失. 这项研究绘制了扩散膜损伤中的细胞和分子变化图,揭示了关键的炎症和纤维化通路.
科学领域:
- 肺部医学 肺部医学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 呼吸系统衰竭是COVID-19死亡的主要原因.
- 在COVID-19中肺膜损伤的细胞和分子机制尚未完全理解.
研究的目的:
- 整合单细胞和空间转录基因数据,绘制COVID-19肺部扩散膜损伤的进展.
- 识别与不同阶段的肺损伤相关的细胞组成变化和分子特征.
主要方法:
- 从COVID-19和捐赠肺组织中整合单细胞转录组数据.
- 应用空间转录基因数据来分层扩散膜损伤的组织病理阶段.
- 细胞与细胞相互作用的分析和分子标记物的预测.
主要成果:
- 在渐进性损伤过程中确定了巨细胞群中的动态变化以及上皮细胞和内皮细胞的枯竭.
- 揭示了早期免疫调节特征 (IFN-alpha,金属氨酸) 和晚期纤维化相关的原特征.
- 预测通过SERPINE1/PAI-1上调调节的纤维溶解性关闭,以及早期损伤中突出显示的巨衍生的SPP1/骨质疏松素信号.
结论:
- 提供了COVID-19肺膜损伤进展的空间解析图谱.
- 在严重的COVID-19中,阐明的细胞机制驱动了亲炎性和亲纤维性通路.
- 确定了在严重的COVID-19中减轻肺损伤的潜在治疗目标.
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