RUFY3 调节了内酶体的周核定位,抗原呈现和活化细胞中的迁移
Rémy Char1, Zhuangzhuang Liu2, Cédric Jacqueline3
1Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille, cedex 9, France.
Nature communications
|July 18, 2023
概括
含有RUN和FYVE域的蛋白3 (RUFY3) 异形iRUFY3对免疫细胞功能至关重要. 它调节了内溶酶体定位,巨细胞迁移和免疫反应,影响宿主对病原体的防御.
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:
- 在微生物感染期间,内解体贩运对细胞功能至关重要.
- 精确调节内溶酶体定位和动态对于有效的免疫细胞激活至关重要.
研究的目的:
- 研究RUN和FYVE域含蛋白3 (RUFY3) 异型在免疫细胞功能中的作用.
- 阐明FYVE域携带异型体 (iRUFY3) 在内溶酶体贩运和细胞反应中的特定功能.
主要方法:
- 分析RUFY3的替代拼接和异形特征.
- 免疫光显微镜用于评估内溶酶体的定位 (ARL8b+/LAMP1+).
- 巨细胞迁移测定,MHC II呈现分析和干扰素-马反应评估.
- 在体内研究使用小鼠模型的LPS注射和细菌性肺炎.
主要成果:
- RUFY3存在两种异构形式,其中iRUFY3具有FYVE域,并与酸丁酸3-酸盐结合.
- iRUFY3优先表达在免疫细胞中,并在微生物和干扰素激活时得到上调.
- iRUFY3对于激活巨细胞中内溶酶体的周核定位至关重要.
- iRUFY3 调节巨细胞迁移,MHC II 呈现,干扰素-马反应和细胞内沙门氏菌复制.
- 在小鼠模型中,细胞特异性rufy3无活化会加剧病态.
结论:
- 该iRUFY3异型在调节内溶酶体动态和细胞内定位方面发挥着至关重要的作用.
- iRUFY3是巨细胞激活,迁移,抗原呈现和免疫反应的关键调节者.
- iRUFY3对于宿主防御细菌感染和炎症状况至关重要.
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