大量转录组和单细胞测序数据集揭示了辐射诱导肺损伤中的关键编程细胞死亡模式:NETosis和巨细胞反应之间的交叉声
Qiang Wang1,2,3, Chengcheng Xia1,2,3, Lihong Shao1,2,3
1Department of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China.
概括
节炎症 (NETosis) 是一种涉及中性粒细胞的编程细胞死亡形式,是辐射诱导的肺损伤的关键. 这项研究揭示了增强的中性粒细胞-巨细胞通信驱动了这一过程,提供了新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 肺部医学 肺部医学
背景情况:
- 编程细胞死亡 (PCD) 与辐射诱导的肺损伤 (RILI) 有关.
- 驱动RILI病原体的特定PCD亚型在很大程度上仍未定义.
- 了解细胞特异性PCD对于RILI治疗策略至关重要.
研究的目的:
- 为了确定辐射诱导肺损伤 (RILI) 中占主导地位的编程细胞死亡 (PCD) 亚型.
- 在RILI中阐明细胞类型特定的PCD模式和细胞间通信网络.
- 发现控制RILI病原性的转录因子 (TF) 监管网络.
主要方法:
- 集成的批量和单细胞RNA测序数据 (GSE25295,GSE41789,GSE211713). 这是一个很好的方法.
- 使用limma和Seurat.识别了差异表达基因 (DEGs).
- 分析了PCD亚型,细胞间通信 (CellChat) 和TF网络 (RcisTarget,AUCell).
主要成果:
- 批量分析确定了465个与炎症和免疫相关的辐射反应基因.
- 中性粒细胞驱动的PCD-NETosis在被辐射的肺组织中显著丰富 (FDR <0.05).
- 中性粒细胞表现出高的NETosis分数,通过SPP1-CD44和ANXA1-FPR信号与巨细胞 (AM1/IM1) 的增强通信,与M2极化相关.
结论:
- 网症是RILI病变的关键PCD亚型.
- 增强的中性粒细胞-巨细胞交叉声和TF驱动的免疫两极分化是RILI中的关键机制.
- 准NETosis和相关的信号通路为RILI提供了一个潜在的治疗策略.
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