巨TRIM21抑制通过PHB2-介导的线粒体稳定改善小鼠急性胰腺炎
Yansong Xu1,2,3,4,5,6, Yuansong Sun6, Xin Zhou6
1Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 23, 2026
概括
E3 泛素结合酶 TRIM21 通过促进炎症加剧急性胰腺炎 (AP). 抑制TRIM21为管理这种严重的炎症性胰腺疾病提供了潜在的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 胃肠病学 胃肠病学
背景情况:
- 急性胰腺炎 (AP) 的特征是细胞死亡和显著的炎症.
- 目前尚不清楚E3泛基因酶TRIM21在AP病变发生中的作用.
- 了解TRIM21的功能对于开发针对AP的向疗法至关重要.
研究的目的:
- 调查TRIM21在调节急性胰腺炎期间炎症中的作用.
- 阐明TRIM21影响AP进展的分子机制.
- 评估在AP中准TRIM21的治疗潜力.
主要方法:
- 在AP患者和小鼠模型中分析TRIM21表达水平.
- 在AP的小鼠模型中,巨细胞特异的Trim21剥离.
- 研究TRIM21对PHB2无化和线性的作用.
- 评估mtDNA稳态和cGAS-STING信号通路的情况.
- 药理上抑制TRIM21使用西诺斯塔.
主要成果:
- 在AP患者和小鼠模型中,TRIM21水平升高,与疾病严重程度相关.
- 宏细胞特异性Trim21删除可以减少胰腺损伤和全身炎症.
- TRIM21针对PHB2进行降解,损害线粒细胞衰变并导致细胞质mtDNA积累.
- mtDNA失调激活了cGAS-STING通路,放大了AP中的炎症.
- 在临床前模型中,西诺斯塔治疗减轻了AP的进展.
结论:
- 在急性胰腺炎期间,TRIM21在加剧炎症方面发挥着至关重要的作用.
- 在AP中,TRIM21介导的PHB2降解和随后的mtDNA释放是关键机制.
- 针对TRIM21,例如用quisinostat,为AP提供了一个有前途的治疗途径.
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