缺乏RelB的自身炎症病理呈现为干扰性病变,但在小鼠中是干扰素独立的
Héctor I Navarro1, Yi Liu2, Anna Fraser3
1Department of Microbiology, Immunology, and Molecular Genetics, Los Angeles, Calif; Molecular Biology Institute, Los Angeles, Calif.
The Journal of allergy and clinical immunology
|July 17, 2023
概括
失去RelB会触发干扰素刺激的基因,但不会导致自身免疫性疾病. 实际上,RelB可以独立于干扰素信号传递抑制其他炎症基因,从而揭示了自身免疫病理学的新机制.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 自身免疫性疾病导致显著的发病率,并有各种各样的原因.
- 干扰素和核因子-κB (NF-κB) /RelA通路是自身免疫病理学的关键,定义干扰素病变和转变病变.
- 对NF-κB亚单元RelB功能的遗传损失会导致老鼠和人类的自身免疫和炎症问题.
研究的目的:
- 通过无偏见的免疫细胞概况来表征RelB缺陷自身免疫.
- 确定改变基因程序在RelB缺陷病理中的作用.
- 调查RelB缺乏,干扰素信号传递和自身免疫性疾病之间的关系.
主要方法:
- 来自RelB缺乏患者和小鼠的纤维细胞和树突细胞的转录组分析.
- 对RelB和I型干扰素受体双敲击小鼠的转录基因反应和病理学的评估.
主要成果:
- 在患者的纤维细胞和小鼠骨髓细胞中,RelB缺乏会提升数百个干扰素刺激的基因.
- 删除干扰素刺激的基因程序并没有减少RelB淘汰赛小鼠的自身免疫病理.
- 独立于干扰素信号传递,RelB抑制了不同的炎症基因,与NF-κB结合部位相关.
结论:
- 缺少RelB的自身免疫性疾病的转录组学表明一种干扰疗法.
- 遗传数据表明,在小鼠中观察到的自身免疫病理独立于干扰素信号传递.
- 在抑制炎症基因程序方面,RelB起着关键的,不依赖干扰素的作用.
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