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痕信号调节了代谢功能障碍相关的脂肪性肝病中巨细胞介导的炎症
Wei Guo1, Ziyi Li2, Gerasimos Anagnostopoulos3
1Shanghai Institute of Immunology, Department of Immunology and Microbiology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China; Department of General Surgery, Pancreatic Disease Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Diseases, Shanghai Key Laboratory of Translational Research for Pancreatic Neoplasms, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
诺奇-RBPJ途径控制了在代谢功能障碍相关的脂肪性肝病 (MASLD/MASH) 中肝细胞巨的发育. 其缺乏促进保护性单细胞,为肝病提供新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 细胞生物学 细胞生物学
背景情况:
- 肝脏巨细胞,包括库普弗细胞 (KC) 和单细胞衍生的巨细胞,影响肝脏疾病的进展.
- 肝细胞巨细胞在代谢功能障碍相关的脂肪性肝病/脂肪性肝炎 (MASLD/MASH) 中的特定作用和差异化机制尚不清楚.
研究的目的:
- 在MASH期间阐明肝细胞巨子群的时间和空间动态.
- 研究Notch-Recombination信号结合蛋白对免疫球体卡帕J区域 (RBPJ) 信号传递在MASH中的单细胞分化和巨细胞功能中的作用.
主要方法:
- 单细胞RNA测序 (scRNA-seq) 的肝细胞巨子群.
- 在MASH模型中追踪单细胞和巨细胞系的命运映射技术.
主要成果:
- 鉴定出不同的单细胞和单细胞衍生的巨细胞子集,在MASH中发生动态变化.
- 证明RBPJ信号传递对单细胞转变为巨细胞至关重要,调节KC分化和炎症巨细胞群.
- 表明Rbpj缺乏促进抗炎Ly6Clo单细胞,通过CD36增强脂质吸收和保护性内皮细胞相互作用.
结论:
- 在MASH期间,Notch-RBPJ信号在调节单细胞分化到肝脏内的特定巨细胞子集中发挥着关键作用.
- 准Notch-RBPJ通路可以调节巨细胞种群,以促进保护功能和治疗MASH.
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