由基因组脱甲基酶KDM5C介导的转录编程调节树突细胞群异质性和功能
Hannah Guak1, Matthew Weiland2, Alexandra Vander Ark2
1Department of Metabolism and Nutritional Programming, Van Andel Institute, Grand Rapids, MI 49503, USA; Department of Pediatrics, University of Michigan, Ann Arbor, MI 48109, USA.
Cell reports
|July 25, 2024
概括
基因组脱甲基酶KDM5C对树突细胞 (DC) 功能和免疫反应至关重要. 在DC中KDM5C的损失会改变DC种群,并损害对宿主防御至关重要的T细胞激活.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 树突细胞 (DCs) 表现出功能和表型异质性,对于编排免疫反应至关重要.
- 了解DC异质性的调节者对于控制宿主保护至关重要.
研究的目的:
- 为了研究KDM5C的作用,一个基因组 lysine 脱甲基酶,在调节DC异质性和功能.
- 阐明KDM5C缺乏对DC群体和免疫反应的影响.
主要方法:
- 使用了缺乏KDM5C的小鼠模型.
- 分析了DC群体 (传统DC和血细胞DC) 和它们的子集.
- 评估基因表达,I型干扰素生产和T细胞刺激能力.
- 在李斯特菌感染后评估免疫反应.
主要成果:
- 在DC中KDM5C缺乏导致cDC2B和cDC1的比例增加,部分依赖于I型IFN和pDC.
- 丢失KDM5C导致Ly6C-pDCs扩张,I型IFN产量减少,但CD8 T细胞刺激增加.
- 缺乏KDM5C的DCs显示炎症基因表达增加,基因表达变化,以及功能减弱.
- 缺乏KDM5C的小鼠表现出CD8 T细胞对李斯特菌感染的反应受损,这是由于cDC1s降低了抗原呈现.
结论:
- KDM5C是DC异质性和功能的关键调节器.
- KDM5C在塑造DC介导的免疫反应中发挥着关键作用,包括T细胞激活和宿主防御.
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