转录因子Zeb1控制1型常规树突细胞的恒常性和功能
Yan Wang1, Quan Zhang2,3, Tingting He1
1State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, Fujian, 361102, China.
Nature communications
|October 20, 2023
概括
树突细胞中的Zeb1缺乏减少了1型常规树突细胞 (cDC1),损害了它们的抗原交叉呈现. 这一途径涉及微RNA-96/182和NADPH氧化酶,影响T细胞的反应.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 1型常规树突细胞 (cDC1) 对于通过抗原交叉呈现启动细胞毒性T细胞反应至关重要.
- 对于cDC1稳态和功能的调节仍然不完全理解.
研究的目的:
- 调查Zeb1在调节cDC1平衡和功能中的作用.
- 阐明Zeb1控制cDC1交叉呈现的分子机制.
主要方法:
- 对缺少Zeb1的小鼠模型的分析.
- 评估cDC1的减少和细胞死亡.
- 对cDC1.1的抗原交叉呈现能力的评估.
- 研究微RNA和mRNA的表达水平.
- 对T细胞反应的功能性测试.
主要成果:
- 树突细胞中的Zeb1缺乏导致了脏cDC1.1的选择性减少和过度死亡.
- 缺少Zeb1的cDC1表现出异源抗原的交叉呈现受损,损害了CD8+ T细胞的反应.
- 发现Zeb1抑制了针对Cybb mRNA (编码NADPH氧化酶Nox2) 的microRNA-96/182.
- 这条通路调节了反应性氧物种依赖的体膜破裂,用于抗原出口.
- 在Zeb1缺陷的cDC1中恢复Cybb拯救了交叉呈现;microRNA过度表达抑制了它.
结论:
- 发现了一种控制cDC1交叉呈现的新型Zeb1-microRNA-96/182-Cybb通路.
- Zeb1在维持cDC1的稳态和功能方面发挥着至关重要的作用.
- 这一途径对于有效的细胞毒性T细胞反应和免疫监测至关重要.
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