不同的分子网络程序功能上不同的CD8+皮肤内存T细胞
Simone L Park1, Susan N Christo1, Alexandria C Wells2
1Department of Microbiology and Immunology, The University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, VIC, Australia.
概括
通过不同的分子途径建立皮肤 CD8+ T 细胞子集,TRM1和TRM17. 了解这些不同的机制为调节皮肤免疫提供了新的策略.
科学领域:
- 免疫学
- 细胞生物学
- 皮肤病学
背景情况:
- 皮肤 CD8+ T 细胞包括不同的子集,包括产生干扰素的 TRM1 和产生 IL-17 的 TRM17 细胞,它们在免疫反应中起着不同的作用.
- 这些独特的T细胞群体在皮肤中的组织居住所控制的分子机制在很大程度上是未知的.
研究的目的:
- 研究TRM1和TRM17细胞用于确定皮肤组织的分子通路.
- 确定这些T细胞子集在皮肤中的结合和维持是否由共同或独特的机制决定.
主要方法:
- 在孤立的TRM1和TRM17细胞中对基因表达和信号通路的比较分析.
- 基因操纵以评估关键转录因子 (T-bet,Hobit,c-Maf) 和细胞因子 (IL-15,IL-7) 在T细胞存在中的作用.
- 针对特定途径评估它们对TRM17细胞群的影响.
主要成果:
- TRM1细胞的存在取决于T-bet-Hobit-IL-15轴.
- TRM17 细胞的存在独立于T-bet-Hobit-IL-15轴.
- 一个不同的ICOS-c-Maf-IL-7轴控制TRM17细胞的承诺和组织的存在,与TRM1细胞中的霍比特通路并行运行.
- 向ICOS-c-Maf-IL-7途径可以选择性地消去皮肤TRM17细胞而不会影响TRM1细胞.
结论:
- 在皮肤中居住的TRM1和TRM17细胞通过分离的分子电路来建立居住状态.
- 鉴定出不同的途径为局部皮肤免疫的战略调节提供了潜在的目标.
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