急性腹膜炎诱导的脂肪CD127+ ILC1s表达PD-L1并改善小鼠的炎症
Ritsu Nagata1,2, Yuichi Akama3, Pedro Goncalves4
1Laboratory for Intestinal Ecosystem, Center for Integrative Medical Sciences RIKEN, Yokohama, Kanagawa, Japan.
Nature communications
|February 5, 2026
概括
在腹膜炎中,介质脂肪组织 (MAT) 中的先天性淋巴细胞 (ILC) 调节炎症. 这些CD127+ ILC1s可能为败血症提供一种新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 腹膜炎,通常是由肠道穿孔引起的,是败血症的主要原因.
- 脂肪组织具有免疫活性,但其先天性淋巴细胞 (ILC) 在周周炎中的作用尚不清楚.
研究的目的:
- 研究脂肪组织ILCs在调节周周炎中的作用.
- 了解围炎期间中脂肪组织 (MAT) 中特定ILC子集的功能.
主要方法:
- 关节绑定和刺穿 (CLP) 肌炎的小鼠模型.
- 流细胞测量用于分析MAT中的ILC群体 (CD127-,CD127+).
- 评估细胞因子的产生 (IFN-γ,TNF) 和PD-L1的表达.
主要成果:
- 循环中的CD127 - 1组ILCs (ILC1s) 在周周炎期间迁移到MAT.
- 在MAT中的ILC1s将表型改变为CD127+ILC1s,从而增加它们的数量.
- MAT CD127+ ILC1s表达PD-L1,具有较低的IFN-γ,并且可能抑制γδ T细胞的TNF产生,控制腹膜炎.
结论:
- MAT CD127+ ILC1s是急性腹膜炎的关键调节者.
- 这些细胞可能会抑制过度炎症,为败血症提供治疗点.
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