多原子反应的时间动态揭示了心肌梗塞后巨细胞子集的调节
Yuan Wu1,2, Panting Wei2, Bin Li1,2
1Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
Journal of translational medicine
|July 10, 2025
概括
这项研究整合了单细胞RNA测序和蛋白质组学,以揭示心肌梗塞 (MI) 后巨细胞子集中的动态蛋白质变化. 研究结果为针对性治疗策略提供了对巨细胞异质性和翻译后修改的见解.
科学领域:
- 免疫学 免疫学 免疫学
- 心血管生物学 心血管生物学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 巨细胞介导的炎症在心肌梗塞 (MI) 病理学中至关重要.
- 单细胞RNA测序 (scRNA-seq) 已经在MI后确定了巨细胞子集,但缺乏蛋白质水平的细节.
- 综合性评估需要整合转录组和蛋白组数据.
研究的目的:
- 通过整合蛋白质组数据来克服scRNA-seq的局限性,以便对MI后的巨细胞子集进行全面分析.
- 描述MI后巨细胞的动态蛋白质水平变化和翻译后修饰 (PTM) 的特征.
- 为开发基于特定巨细胞子集和时间点的有针对性的干预措施奠定基础.
主要方法:
- 来自ArrayExpress的scRNA-seq数据的分析,包括质量控制,规范化,缩小维度和聚类.
- 使用计算管道对巨细胞子集进行系统的分类和注释.
- 通过动物实验和与蛋白质组数据的整合验证计算分类.
主要成果:
- 确定了七个巨细胞群,包括Spp1Mac,MHCIIMac,Ltc4sMac,Lyve1Mac,DcnMac,Ly6c1Mono和Stmn1Mac.
- 结合scRNA-seq和蛋白质组学,分别在MI后3,7和28天发现了78,126和64个差异表达蛋白 (DEP).
- DEP与炎症,蛋白质加工,行为组织和细胞骨调节有关,其中PTM包括酸化,乙化和乳化.
结论:
- 该研究通过整合scRNA-seq和蛋白质组学,全面概述了巨异质性和MI后的动态蛋白质变化.
- 在巨细胞中PTMs的表征提供了对其在MI中的功能作用的新见解.
- 这些发现为基于特定的巨细胞子集和时间动态开发针对心肌梗塞的有针对性的干预措施奠定了基础.
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