在感染期间,炎症性ILC2s通过特定阶段的S1P受体迁移到远端组织
Takamasa Ito1, Christine F Wu1, Yingyu Zhang1
1Department of Microbiology and Immunology, Columbia University Medical Center, New York, NY 10032, USA.
Science immunology
|March 13, 2026
概括
炎症性2组先天性淋巴细胞 (iILC2s) 在虫感染期间从肠道迁移到远处的组织. 这种多阶段迁移依赖于斯芬戈-1-酸盐受体 (S1PRs) 和淋巴血管进行免疫细胞再分配.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子机制的分子机制
背景情况:
- 组织寄存淋巴细胞,包括2组先天性淋巴细胞 (ILC2s),可以循环,但机制尚不清楚.
- 在虫感染期间,肠道ILC2s繁殖成炎性iILC2s,迁移到远端组织.
研究的目的:
- 阐明控制炎症性ILC2s (iILC2s) 从肠道迁移到远部组织的分子机制.
- 了解基-1-酸盐受体 (S1PRs) 在iILC2再分配中的作用.
主要方法:
- 研究对被虫感染的小鼠进行了研究.
- 分析包括评估表观遗传景观,基因表达 (KLF2,ZEB2,S1PR1,S1PR5) 和细胞表面标记物的动态 (CD69).
- 研究了对淋巴血管和特定的S1PRs对于iILC2迁移的要求.
主要成果:
- iILC2从肠道迁移需要进入淋巴血管.
- 干白素-25 (IL-25) 信号改变iILC2表观遗传学,上调KLF2和ZEB2.
- KLF2和ZEB2分别驱动S1PR5和S1PR1的表达,促进了连续的迁移步骤.
- S1PR5调解了从肠道到淋巴的出口,而S1PR1对于从淋巴结到血液的出口至关重要.
- 动态CD69表达影响S1PR1功能,影响iILC2迁移.
结论:
- 氨酸-1-酸盐受体 (S1PRs) 以特定阶段的方式调节来自非淋巴体和淋巴体器官的iILC2迁移.
- 这为了解组织居民免疫细胞的复杂多步迁移提供了一个框架.
- 针对S1PR介导的迁移可能为免疫相关疾病提供治疗策略.
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