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缺口信号通过PI3K/AKT/mTORC1通路调节Th17细胞的分化,并涉及到自身免疫性甲状腺炎的甲状腺损伤
1Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, 256600, People's Republic of China.
Journal of endocrinological investigation
|January 29, 2024
概括
突信号驱动自身免疫性甲状腺炎,通过通过PI3K/AKT/mTORC1通路促进T辅助17细胞的分化. 抑制这种途径可以缓解甲状腺损伤,这表明自身免疫甲状腺炎的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
- 分子生物学分子生物学
背景情况:
- 自身免疫性甲状腺炎 (AIT) 是一种普遍存在的内分泌疾病,目前没有预防措施.
- 辅助T细胞17 (Th17) 及其相关的细胞因子IL-17A在自身免疫性甲状腺损伤中起着关键作用.
研究的目的:
- 研究Notch信号在调节Th17细胞分化中的作用及其对实验性自身免疫甲状腺炎 (EAT) 的影响.
- 为了阐明胺基-3激酶/蛋白激酶/机械标的胺基复合物1 (PI3K/AKT/mTORC1) 途径在Notch介导的甲状腺损伤中的参与.
主要方法:
- 在体内研究中,EAT小鼠接受PI3K抑制剂 (LY294002) 治疗,以评估甲状腺炎的严重程度,Th17细胞透,IL-17A表达和Notch-PI3K通路组件.
- 在体外实验中,利用EAT小鼠的脏单核细胞接受LY294002治疗,以确认该途径对Th17细胞的调节作用.
主要成果:
- EAT小鼠表现出增加的Th17细胞透,IL-17A,以及Notch,Hes1,p-AKT,p-mTOR,S6K1和S6K2.2的升高水平.
- PI3K通路的抑制显著降低了甲状腺炎,Th17细胞比例,IL-17A和与通路相关的分子,以剂量依赖的方式.
- Th17细胞的比例与血清铁血球蛋白抗体 (TgAb),IL-17A和Notch-PI3K通路mRNA水平呈正相关性.
结论:
- 突信号通过激活PI3K/AKT/mTORC1通路,促进Th17细胞的IL-17A分泌,从而导致自身免疫性甲状腺损伤.
- 通过调节Th17细胞分化,PI3K通路的抑制在AIT中显示出潜在的治疗效果.
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