CXCR5信号细调树突细胞转录和调节TH2发育
Miranda L Curtiss1, Natalia Ballesteros Benavides2, Alexander F Rosenberg3
1Division of Pulmonary and Critical Care Medicine, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294, USA.
Vaccines
|September 27, 2025
概括
树突细胞 (DCs) 上的CXCR5对于虫感染期间的T辅助细胞2 (TH2) 起初起作用至关重要. 这种受体会诱导基因酶3-like-1 (Chi3l1),增强TH2反应和DC功能.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 类动物学 类动物学
背景情况:
- 状细胞 (DC) 对CXCR5的表达对被虫Heligmosomoides polygyrus (Hp) 感染的小鼠的T助手2 (TH2) 细胞原始化至关重要.
- 通过CXCR5控制DC介导的TH2细胞发育的精确机制尚未完全阐明.
研究的目的:
- 为了研究CXCR5在DC表达如何影响CD4 T助手2 (TH2) 细胞在虫感染期间的发育.
- 在DC中识别由CXCR5调节的下游分子通路,影响TH2原始化.
主要方法:
- 在体外进行了TH2初始化试验,以评估DC功能.
- 用RNA-sequencing (RNA-seq) 分析来确定DCs中的转录变化.
- 在活体中,小鼠感染Hp感染的模型被用于在生理学背景下研究TH2反应.
主要成果:
- 迁移型常规2型树突细胞 (cDC2) 表达CXCR5,其存在增强了TH2细胞的化在体外.
- 在cDC2细胞中CXCR5的表达促进了促增殖的转录程序,并且在Hp感染期间需要在中腔淋巴结 (msLN) 中积累cDC2.
- 在cDC2细胞中,CXCR5对于提升基因酶3-like-1 (Chi3l1) 的调节是必要的,这种蛋白质增强TH2的发育,对DC积累和TH2反应在体内至关重要.
结论:
- 在cDC2细胞上的CXCR5对于诱导Chi3l1是不可或缺的,这随后会增加这些DC的TH2原始化能力.
- 这些发现阐明了CXCR5和Chi3l1在调节虫感染期间免疫反应中的作用.
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