五甲基葡萄糖通过通过cGAS-STING通路调节炎症来缓解亚美诺诱导的急性肝损伤
Congyang Zheng1,2,3, Yuanyuan Chen3, Tingting He3
1Medical School of Chinese PLA, Beijing, China.
Molecular medicine (Cambridge, Mass.)
|September 28, 2024
概括
五甲基葡萄糖 (PGG) 通过抑制cGAS-STING通路来防止乙氨基诱导的肝损伤 (AILI). 这种天然化合物通过破坏STING-TBK1相互作用,为AILI提供了一个有前途的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 自然产品化学 自然产品化学
背景情况:
- 循环GMP-AMP合成酶 (cGAS) 刺激干扰素基因 (STING) 途径是先天免疫的组成部分,并与乙氨基诱导的肝损伤 (AILI) 有关.
- 五甲基葡萄糖 (PGG) 是一种天然的多,具有已知的抗癌,抗氧化,抗炎和肝脏保护性质.
- 在AILI中PGG的治疗潜力和精确机制在很大程度上仍未被探索.
研究的目的:
- 调查五甲基葡萄糖 (PGG) 在减轻乙氨基引起的肝损伤 (AILI) 的疗效.
- 阐明PGG发挥其保护作用的基础分子机制,重点关注cGAS-STING通路.
- 评估PGG作为AILI的潜在治疗剂.
主要方法:
- 利用体外细胞培养模型 (BMDMs,THP-1,PBMCs) 和体内小鼠模型来评估PGG对cGAS-STING通路的影响.
- 采用西部涂抹,RT-qPCR,免疫光和免疫沉来分析途径激活和分子相互作用.
- 在乙氨基诱导的肝损伤模型中评估肝保护作用,通过测量肝功能标志物,组织病理和亡.
主要成果:
- 在各种细胞类型中,PGG有效地抑制了cGAS-STING通路的激活,并抑制了I型干扰素的产生和炎症性细胞因子分泌 in vivo.
- 服用PGG显著降低了血清ALT,AST和ALP水平,改善了肝脏组织损伤,并减少了AILI小鼠的亡.
- 在机制上,PGG被发现会破坏STING和TBK1之间的相互作用,从而阻断下游信号传输.
结论:
- 五甲基葡萄糖 (PGG) 显示出对乙胺诱导的肝损伤 (AILI) 有显著的肝保护作用.
- 通过抑制cGAS-STING炎症途径,特别是通过破坏STING-TBK1复合体来发挥PGG的功能.
- 这些发现凸显了PGG作为治疗AILI的有希望的治疗候选者.
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