在人体SLE中,红状腺线粒体保留会触发神经依性I型干扰素
Simone Caielli1, Jacob Cardenas2, Adriana Almeida de Jesus3
1Drukier Institute for Children's Health, Weill Cornell Medicine, New York, NY, USA; Department of Pediatrics, Weill Cornell Medicine, New York, NY, USA.
Cell
|August 13, 2021
概括
红细胞中的线粒体去除缺陷与全身性红斑狼 (SLE) 病变有关. 在SLE患者中含有线粒体的红细胞的积累与疾病活性和I型干扰素的产生有关.
科学领域:
- 免疫学
- 细胞生物学
- 血液学
背景情况:
- 线粒体功能障碍与全身性红斑狼 (SLE) 的发病有关.
- 在哺乳动物的红细胞成熟过程中,编程去除线粒体至关重要.
研究的目的:
- 调查线粒体去除缺陷在SLE中的作用.
- 阐明SLE患者中含有线粒体的红细胞积累的机制.
主要方法:
- 人体红色素细胞成熟的分析.
- 研究缺氧诱导因子 (HIF) 信号及其对无素蛋白酶系统 (UPS) 和自的影响.
- 在SLE患者中量化含有线粒体的红细胞 (Mito+红细胞).
- 评估I型干扰素 (IFN) 生产和IFN刺激基因 (ISG) 签名.
主要成果:
- 在SLE中发现了计划性线粒体去除的缺陷.
- 由HIF介导的代谢开关激活了UPS,在红细胞成熟过程中使线粒体自移除成为可能.
- 线粒体清除受损导致SLE患者的Mito+红细胞积累,与疾病活性相关.
- 巨细胞的Mito+红细胞内化通过cGAS激活诱导I型IFN的产生.
- 患有Mito+红细胞和异位抗体的SLE患者表现出较高的ISG特征.
结论:
- 红色素形成过程中的线粒体清除缺陷有助于SLE的发病.
- 米托+红细胞作为SLE疾病活动和I型IFN诱导的潜在生物标志物.
- 针对线粒体去除途径可能为SLE提供治疗策略.
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