人类TBK1缺乏导致由TNF诱导的细胞死亡引起的自身炎症
Justin Taft1, Michael Markson1, Diana Legarda2
1Center for Inborn Errors of Immunity, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Department of Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA; Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
在人体中,TANK结合激酶1 (TBK1) 的功能丧失突变引起自身炎症,而不是严重的感染. 通过减少TNF诱导的细胞死亡,抗TNF治疗改善了患者的状况.
科学领域:
- 免疫学
- 遗传学
- 细胞生物学
背景情况:
- 坦克结合激酶1 (TBK1) 对于调节免疫信号通路至关重要,包括IFN-I,NF-κB和TNF诱导的细胞死亡.
- 在小鼠中,TBK1缺乏是致命的,这表明它在发育和免疫力中起着至关重要的作用.
研究的目的:
- 在人体中研究TBK1同胞性功能丧失突变的体内后果.
- 阐明TBK1缺乏症患者自身炎症的机制.
- 评估针对TNF诱导的细胞死亡的治疗潜力.
主要方法:
- 对血缘家族进行基因分析以确定同卵性TBK1突变.
- 评估患者的免疫反应,包括IFN- I和IL- 6诱导.
- 使用患者衍生纤维细胞进行体外研究以分析亡率.
- 患者血液中的细胞死亡标志物 (CC3) 的活体分析.
- 使用抗TNF治疗的体内治疗试验.
主要成果:
- 鉴定出来自三个家族的4名患者具有同胞性功能丧失的TBK1突变.
- 患者出现慢性系统性自身炎症,但缺乏严重的病毒感染.
- TBK1损失导致IFN- I诱导受损但足够,IL- 6诱导基本完好.
- 自身炎症是由TNF诱导的RIPK1依赖性细胞死亡 (亡) 在体外增加和体内增加的CC3引起的.
- 抗TNF治疗减少了全身炎症和改善了临床症状.
结论:
- 同胞性TBK1功能丧失突变会在人类中引起明显的自身炎症综合征.
- 在预防TNF诱导的细胞死亡和维持免疫平衡方面,TBK1起着至关重要的作用.
- 针对TNF诱导的细胞死亡是一种可行的治疗策略,用于TBK1缺乏相关的自身炎症.
相关概念视频
T Cell Types and Functions
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Drugs for Treatment of Crohn's Disease in IBD Using Biologic Agents: Anti-TNF
NF-κB-dependent Signaling Pathway
NF-κB-dependent Signaling Mechanism
The...
Cytotoxic T Cells-mediated Immune Response
Immunological surveillance is the ability of immune cells to monitor and eliminate infected cells with intracellular pathogens, neoplastically transformed cells, and cells with non-self antigens. Cytotoxic T cells and NK...
Pulmonary Tuberculosis I
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
The Extrinsic Apoptotic Pathway


