Trim32-DPEP2轴是肠道炎症期间巨细胞中的炎症开关
Zhiyan Zhan1,2, Huisheng Liang3,4, Zhuoqi Zhao5
1Department of Clinical Nutrition, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China. zhanzhiyan@sjtu.edu.cn.
炎症性巨细胞驱动肠道炎症. 研究人员发现,Trim32通过dipeptidase-2 (DPEP2) 蛋白质降解激活炎症通路,这表明Trim32-DPEP2轴作为治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 炎症性巨细胞导致肠道炎症的确切机制尚不完全理解.
- 了解这些机制对于开发针对炎症性肠病的有效治疗策略至关重要.
研究的目的:
- 为了阐明二二酶 (DPEP2) 在巨介导肠道炎症中的作用.
- 在炎症的背景下,研究涉及Trim32和DPEP2的调节轴.
主要方法:
- 综合分析RNA测序和基于质谱的定量蛋白质组学,以比较活性巨细胞中的转录组和蛋白质组数据.
- 在体内和体外实验中评估DPEP2抑制和降解对巨细胞功能和肠道炎症的影响.
主要成果:
- 在激活的巨细胞中,二 dipeptidase-2 (DPEP2) 蛋白水平急剧下调,独立于mRNA水平.
- 抑制DPEP2在体内加剧了巨细胞介导的肠道炎症,并在体内促进了炎症途径的激活.
- 亲炎性巨细胞中由Trim32降解DPEP2,通过释放MAK3K7.7激活NF-κB和p38MAPK信号通路,从而激活MAK3K7.
结论:
- Trim32-DPEP2轴在调节巨细胞介导的肠炎症方面发挥着至关重要的作用.
- DPEP2充当关键调节剂,其被Trim32降解,促进炎症信号传递.
- Trim32-DPEP2轴代表了治疗肠道炎症的潜在治疗标.
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