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Published on: May 24, 2019
在类风湿性关节炎中,TREM1通过E2F1介导的TOMM40转录轴干扰巨细胞菌
Zhen-Zhen Dai1, Jing Xu2, Qin Zhang2
1Department of Pediatric Orthopedics, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Institute for Pediatric Research, Shanghai, China.
Free radical biology & medicine
|January 10, 2025
概括
在类风湿性关节炎中,向质细胞1 (TREM1) 上表达的触发受体,使得巨细胞恢复了线粒和减少反应性氧物种 (ROS). 通过改善线粒体功能,抑制TREM1有效治疗实验性关节炎.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 分子医学是分子医学.
背景情况:
- 在类骨髓细胞1 (TREM1) 上表达的触发受体在类风湿性关节炎 (RA) 中被上调.
- 在巨细胞中TREM1的激活有助于RA的关节破坏.
- 之前的研究将TREM1与异常线粒有关.
研究的目的:
- 研究在实验性关节炎中准TREM1的治疗潜力.
- 阐明TREM1在巨细胞菌中的调节作用.
- 探索TREM1介导的髓功能障碍的基础分子机制.
主要方法:
- 通过TREM1,DAP12和p-SYK进行TREM1信号的评估.
- 使用PINK1,PARKIN和LC3A/B测量了线粒.
- 使用RNA-seq,传输电子显微镜和共聚焦显微镜.
- 在机械学研究中进行了ChIP-PCR和E2F1siRNA.
主要成果:
- 在CIA小鼠中,TREM1的表达和激活高,小鼠有异常的线粒.
- 过度表达TREM1上调调节TOMM40和E2F1,降低了线粒的调节.
- E2F1直接促进了TOMM40转录,损害了线粒和增加了ROS.
- 在巨细胞中,TREM1抑制恢复了线粒和降低了ROS.
结论:
- 通过E2F1-介导的TOMM40上调调节,TREM1信号驱动试验性关节炎,通过破坏巨细胞菌.
- 针对TREM1提供了通过恢复线粒体平衡来治疗RA的潜在治疗策略.
- 这项研究突出了TREM1-mitophagy轴在RA病变发生过程中的关键作用.
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