通道β3亚单元调节了树突细胞的ATP依赖迁移
Marcel S Woo1, Friederike Ufer1, Jana K Sonner1
1Institute of Neuroimmunology and Multiple Sclerosis, University Medical Center Hamburg-Eppendorf, 20251 Hamburg, Germany.
Science advances
|September 20, 2023
概括
迁移性树突细胞 (migDCs) 使用CACNB3通道来感知细胞外ATP,这是组织损伤期间释放的信号. 这种机制控制它们向受伤和炎症部位的迁移.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
背景情况:
- 迁移性树突细胞 (migDCs) 是关键的免疫哨兵,巡逻组织.
- 在受伤或炎症期间释放的细胞外腺三酸盐 (ATP) 增强了migDC的运动性.
- 将ATP与加速的migDC迁移联系在一起的精确分子机制尚不清楚.
研究的目的:
- 阐明细胞外ATP增强migDC迁移的分子机制.
- 为了确定参与ATP介导的migDC运动的特定分子参与者.
- 了解 CACNB3 在调节炎症和组织损伤期间 migDC 迁移中的作用.
主要方法:
- 描述 migDC 种群及其独特的分子标记物.
- 在体外和体内测试以评估对ATP和脂多糖的反应中migDC迁移.
- 基因操纵 (Cacnb3缺陷) 来研究CACNB3在migDC功能中的作用.
- 在migDCs中分析信号通路和粘附分子调节.
主要成果:
- 迁移性树突细胞 (migDCs) 通过电压通通道子单元β3 (Cavβ3; CACNB3) 的表达来独特识别.
- CACNB3 完全调解依赖ATP的 migDC 迁移,而不是由脂多糖诱导的迁移.
- CACNB3调节ATP诱导的从内质网膜释放,抑制粘附分子并启动迁移.
- 在暴露于ATP时,Cacnb3缺乏的migDCs表现出受损的迁移.
结论:
- CACNB3被确定为依赖ATP的migDC迁移的关键调节者.
- 通过CACNB3介导的途径控制了migDC对组织损伤和炎症的反应.
- 这一发现提供了关于在炎症条件下组织特异性免疫反应的见解.
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