选择性氧化保护导致在性结肠炎期间由巨主导的组织拓变化
Juan Du1, Junlei Zhang2,3,4, Lin Wang2,3,4
1Department of Gastroenterology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310002, China. dujuan@zju.edu.cn.
Nature communications
|June 21, 2023
概括
在性结肠炎中,由于氧化应激,组织寄居的巨细胞消失. 炎症性巨细胞取代它们,改变结肠生态系统中TNF的产生.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 细胞生物学 细胞生物学
背景情况:
- 性结肠炎 (UC) 是一种慢性炎症性肠病,其特点是显著的细胞异质性.
- 了解UC结肠生态系统中的细胞组成和空间动态对于开发向疗法至关重要.
研究的目的:
- 阐明在性结肠炎期间人类结肠中单细胞格局和空间变化.
- 为了研究巨细胞动态和反应性氧物种 (ROS) 在UC的脆弱性背后的机制.
主要方法:
- 利用成像质量细胞测量和单细胞RNA测序来分析人类结肠单细胞格局.
- 评估了UC和健康结肠组织中的组织拓,巨细胞群和活性氧物种 (ROS) 水平.
主要成果:
- 确定了一种巨细胞消失反应,特别影响UC区域的组织居民巨细胞.
- 在UC区域观察到较高的ROS水平,在居住巨细胞中缺乏SOD2表达,使它们变得脆弱.
- 证明炎症性巨细胞取代居民巨细胞,导致T和B细胞介导的TNF生产的空间转移.
结论:
- 提出了UC中居民巨细胞消失的机制,涉及ROS脆弱性和由炎症巨细胞取代.
- 提供了对巨细胞消失反应的机械洞察力,适用于其他炎症和传染病.
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