单细胞转录学显示细胞异质性,细胞间通信和细胞外矩阵重塑在角膜纤维化中的生物体内
Rajnish Kumar1,2, Nishant R Sinha1,2,3, Maxwell T Jeffrey2
1Harry S. Truman Memorial Veterans' Hospital, Columbia, Missouri, United States.
Investigative ophthalmology & visual science
|October 28, 2025
概括
角膜纤维化涉及多种细胞类型和通信通路. 这项研究揭示了不同的纤维细胞状态,以及它们在角膜修复过程中对细胞外基质的动态重塑.
科学领域:
- 眼科医生 眼科 眼科
- 细胞生物学 细胞生物学
- 基因组学就是基因组学.
背景情况:
- 角膜纤维化在全球范围内影响数百万受伤或感染后.
- 了解纤维细胞异质性对于开发有效的治疗方法至关重要.
研究的目的:
- 为了体现纤维细胞异质性,细胞轨迹,细胞间通信和细胞外矩阵 (ECM) 在体内纤维化角膜中的重塑.
- 提供角膜修复的综合性转录基因框架.
主要方法:
- 原始和损伤的子角膜的单细胞RNA测序 (scRNA-seq).
- 多式成像,转录基质地图集生成和生物信息分析,包括轨迹推断和细胞间通信映射.
主要成果:
- 鉴定出十四个不同的细胞群,包括四个树皮细胞群:静止基质细胞,活性基质细胞,原始类基质细胞和肌纤维细胞.
- 揭示了从静止状态到激活状态的分叉转录轨迹,并确定了参与ECM重塑的关键信号通路 (MIF,POSTN,HGFα).
- 在ECM重塑细胞中证明了双向进展轨迹和时间动态.
结论:
- 这项研究提供了一份关于角膜 stromal 细胞异质性和纤维化过程中的动态的综合性转录基因图.
- 进步对角膜修复过程和纤维细胞 in vivo 行为的机制性理解.
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