通过限制TNFR1-驱动的STING激活和ZBP1-依赖的细胞死亡,ATG9A介导的自会预防炎症性皮肤疾病
Dario Priem1, Jon Huyghe1, Barbara Gilbert1
1Center for Inflammation Research, VIB, 9052 Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium.
Immunity
|October 21, 2025
概括
瘤坏死因子 (TNF) 驱动炎症,但ATG9A缺乏导致通过cGAS/STING依赖的干扰素产生和细胞死亡导致疾病. 自抑制了这种干扰素反应,为炎症性疾病提供了新的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 皮肤病学 皮肤病学
背景情况:
- 瘤亡因子 (TNF) 是一种关键的促炎细胞因子,涉及慢性炎症和自身免疫性疾病.
- 连接TNF信号与疾病发病的确切机制仍然不完全理解.
- 之前的研究表明,小鼠角质细胞中ATG9A缺乏导致严重的皮肤炎和全身炎症.
研究的目的:
- 阐明TNF感应在没有ATG9A的情况下驱动致病的分子机制.
- 确定TNF诱导的炎症和皮肤炎中涉及的特定信号通路和细胞过程.
- 探索自的作用,特别是LC3-依赖和-独立的途径,调节TNF驱动的病理.
主要方法:
- 使用具有ATG9A缺陷角质细胞的小鼠模型.
- 研究了cGAS/STING,I型干扰素 (IFN),ZBP1和自途径的作用.
- 分析了细胞过程,包括对TNF信号的反应中的亡和亡.
主要成果:
- 虽然TNF启动了疾病,但病原发生是由cGAS/STING-依赖的I型IFN生产驱动的.
- 随后的ZBP1依赖性亡和亡有助于观察到的病理学.
- ATG9A通过启动LC3依赖和LC3独立的自细胞来预防疾病.
- 独立于LC3的自在抑制I型IFN产生的过程中起着至关重要的作用.
结论:
- 发现了一种新的病理途径下游的TNF信号涉及cGAS/STING和I型IFN.
- 证明ATG9A介导的自,包括LC3独立的机制,对于预防TNF驱动的炎症性疾病至关重要.
- 确定了自在抑制I型IFN产生的新作用,这与干涉性干扰病有关.
- 这些发现表明了针对TNF信号传递和干扰素通路的新疗法策略,用于炎症和自身免疫疾病.
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