维生素E调节肝细胞外腺素信号,减轻与代谢功能障碍相关的脂肪性肝病 (MASLD)
Mengting Shan1, Magdeline E Carrasco Apolinario1, Tomoko Tokumaru2
1Department of Physiology, Faculty of Medicine, Oita University, Yufu 879-5593, Oita, Japan.
International journal of molecular sciences
|January 28, 2026
概括
维生素E通过降低细胞外腺素 (Ado) 和通过SERCA改善处理,减少代谢功能障碍相关的脂肪性肝病 (MASLD) 的肝脂肪和炎症. 这突出了Ado和SERCA作为MASLD治疗的关键目标.
科学领域:
- 肝病学和代谢疾病
- 分子生物学和信号通路
- 药理学和治疗学 药理学和治疗学
背景情况:
- 与代谢功能障碍相关的脂肪性肝病 (MASLD) 具有脂质积累,炎症和细胞应激的特征.
- 细胞外腺 (Ado),一种与损伤相关的分子模式 (DAMP),通过促进炎症,细胞内网膜 (ER) 应激和脂肪症,加剧MASLD.
- 维生素E在调节MASLD中DAMP相关信号的作用在很大程度上仍未被探索.
研究的目的:
- 调查细胞外腺信号在早期MASLD中的作用.
- 为了确定维生素E是否通过向腺信号传递和ER平衡来改善MASLD.
- 阐明维生素E在MASLD中的治疗机制.
主要方法:
- 使用转基因斑马鱼与肝脏特定的腺素传感器 (GRABAdo) 来监测细胞外Ado水平.
- 进行高胆固醇饮食以诱导MASLD,并评估维生素E治疗的影响.
- 采用RNA测序来分析基因表达变化,并使用SERCA激活器CDN1163进行机械研究.
主要成果:
- 高胆固醇饮食显著增加了斑马鱼的肝脏细胞外Ado,炎症和ER压力标志物.
- 维生素E治疗显著降低了细胞外Ado水平,肝脏脂质积累和炎症基因表达.
- 维生素E恢复了参与sarco/ER Ca2+-ATPase (SERCA) 机制的基因表达,改善了ER Ca2+平衡.
结论:
- 细胞外腺素信号传递和SERCA介导的调节受损是MASLD的早期驱动因素.
- 维生素E通过向细胞外腺和SERCA通路,对MASLD产生保护作用.
- 这些发现为MASLD确定了新的治疗点,强调了平衡的重要性.
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