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尽管通过mTOR信号传递和化氧化,SMRT枯竭的常规DC保持了炎症,尽管糖解水平较低,但仍通过mTOR信号传递和化氧化维持炎症
Kaushik Sen1,2, Rashmirekha Pati1, Gyan Prakash Mishra1
1Immunogenomics & Systems Biology Lab, Institute of Life Sciences (ILS), Bhubaneswar, Odisha, 751023, India.
npj metabolic health and disease..
|July 3, 2025
概括
树突细胞中SMRT的损失通过改变免疫细胞代谢引起炎症,这与目前的理解相反. 向酸盐氧化和mTOR途径抑制了这种炎症,为自身免疫性疾病提供了新的治疗途径.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢途径 代谢途径
- 细胞代谢的细胞代谢.
背景情况:
- 免疫平衡依赖于协调的免疫代谢适应.
- 树突细胞 (DCs) 中代谢调整的调节机制尚未完全理解.
- 之前已经表明,DC中Ncor2 (SMRT) 的损失会增强炎症.
研究的目的:
- 阐明DC中免疫中心代谢调整的转录控制.
- 研究DC中SMRT损失的代谢后果.
- 为了确定SMRT介导炎症的潜在治疗点.
主要方法:
- 研究了SMRT耗尽的DCs中的代谢转变.
- 分析了mTOR在调节糖解速率中的作用.
- 检查了TCA周期的变化,包括谷氨胺代谢和酸盐氧化.
- 评估了DEBM和Mhy1485在抑制活体和体内炎症方面的疗效.
主要成果:
- 在DC中SMRT耗尽诱导了代谢转变,导致持续的炎症,尽管减少了糖解.
- 确定mTOR下调是减弱糖分分解率的关键因素.
- 对TCA循环的重新连接涉及增加了谷氨胺代谢和酸盐氧化,维持炎症.
- 同时使用DEBM和Mhy1485治疗显著抑制了炎症.
- 观察到SMRT水平与人类自身免疫性疾病之间存在逆相关性.
结论:
- 在DC中SMRT损失通过独特的代谢重新连接触发炎症,挑战糖解的既定作用.
- 向酸盐氧化和mTOR途径为炎症和自身免疫性疾病提供了潜在的治疗策略.
- 在人类自身免疫性疾病中,SMRT是潜在的生物标志物和治疗点.
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