雌激素受体激活重塑TEAD1基因表达,以缓解肝脏肥胖症
Christian Sommerauer1, Carlos J Gallardo-Dodd1, Christina Savva2
1Department of Microbiology, Tumor, and Cell Biology, Karolinska Institute, Science for Life Laboratory, Solna, Sweden.
Molecular systems biology
|March 8, 2024
概括
雌激素受体激活可逆转高脂肪饮食对小鼠的肝损伤. 这一途径涉及TEAD1,这是代谢功能障碍相关的脂肪性肝病的关键因素,提供了一个新的治疗点.
科学领域:
- 内分泌学 在内分泌学.
- 肝病学 肝病学是一种肝病学.
- 分子生物学分子生物学
背景情况:
- 与肥胖相关的肝病显示出基于性别的差异,这意味着雌激素的保护作用.
- 雌激素受体 (ER) 信号传递对于调节肝脏生理学和新陈代谢至关重要.
研究的目的:
- 为了研究高脂肪饮食 (HFD) 诱导的肝病中的ER异型特异性反应.
- 确定将ER激活与肝脏健康和与代谢功能障碍相关的脂肪性肝病 (MASLD) 联系起来的分子机制.
主要方法:
- 使用了一种具有HFD和选择性ER激活的临床前小鼠模型.
- 从小鼠肝脏和人类患者队伍中集成的多omics数据 (基因组学,转录学,代谢学).
- 在细胞模型中使用短干扰RNA (siRNA) 和小分子抑制剂.
主要成果:
- 选择性ER激活在小鼠中恢复了HFD诱导的肝脏表型.
- 激活ER调节了超出脂质代谢的肝脏核心通路,在物种中保存.
- 经ER调节的增强剂控制MASLD患者的关键代谢基因,包括转录因子TEAD1.
- 在体外,TEAD1的下调和小分子抑制降低了肝硬化症.
结论:
- 雌激素受体信号传递在缓解HFD诱导的肝损伤方面发挥着至关重要的作用.
- TEAD1是MASLD病变发生的关键媒介,也是肝硬化病的潜在治疗点.
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