相关实验视频
桑花叶中的素通过FOXO3-介导的Trem2转录抑制微质炎症
Tiantian Zhang1, Shuangxi Zhang1, Jiayang Ma1
1Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, 28 West Xianning Road, Xi'an 710049, China.
Antioxidants (Basel, Switzerland)
|December 30, 2025
概括
富含黄素的红杉叶在阿尔茨海默病模型中通过调节TREM2 (Triggering Receptor Expressed on Myeloid Cells 2) 来降低神经炎症. 这通过FOXO3-TREM2途径发生,为AD提供了潜在的饮食干预.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 微质激活和神经炎症是阿尔茨海默病 (AD) 的核心.
- 在骨髓细胞表达的触发受体2 (TREM2) 关键调节微质炎症反应.
- 目前调节TREM2的策略有限,需要新的治疗方法.
研究的目的:
- 在AD小鼠模型中研究三花叶及其活性成分素对神经炎症和TREM2表达的作用.
- 阐明黄素调节TREM2并产生抗炎作用的分子机制.
主要方法:
- 利用了APP/PS1转基因小鼠,这是阿尔茨海默病的常见模型.
- 用花叶提取物和分离的黄素来评估对微质激活和炎症的影响.
- 使用脂多糖 (LPS) 在体外激活微质.
- 进行促进体分析以确定TREM2的转录调节体.
- 研究了分叉盒蛋白O3 (FOXO3) 在氨酸中介TREM2调节中的作用.
- 利用TREM2的淘汰实验来证实它作为一个调解者的作用.
主要成果:
- 红杉叶和黄素显著抑制了APP/PS1小鼠中的微质炎症.
- 氨酸在激活的微质细胞中提高了TREM2表达的调节.
- 素通过激活FOXO3来增强TREM2转录,FOXO3与TREM2促进体结合并转移到核中.
- 对TREM2的抑制减弱了黄素的抗炎作用,证实TREM2是关键的调解剂.
结论:
- FOXO3-TREM2信号轴代表了阿尔茨海默病中神经炎症的新型治疗点.
- 柳叶叶叶中丰富的素,通过调节FOXO3-TREM2通路,显示出作为AD的饮食干预的潜力.
- 这项研究为神经退行性疾病的背景下天然抗氧化剂的抗炎性质提供了新的机制性见解.
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