主导阴性HNF1α突变通过调节肝补充因子D来促进肝硬化和炎症
Moke Liu1,2,3,4,5, Luna Liu2,3,4,5, Honglin Guo2
1Department of Endocrinology, Shandong Provincial Hospital, Shandong University, Jinan 250021, China.
iScience
|October 16, 2023
概括
肝细胞核因子1-alpha (HNF1A) 变体通过增加补充因子D (CFD) 表达,导致炎症和脂质沉积,导致肝脏肥胖症. 准CFD可能有助于管理非酒精性脂肪肝疾病.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 肝细胞核因子1-alpha (HNF1A) 变体与肝脏肥胖症有关,但机制尚不清楚.
- 了解HNF1A相关性肝病的分子基础对于开发治疗策略至关重要.
研究的目的:
- 为了研究HNF1A突变在肝硬化症的发展中的作用.
- 阐明HNF1A变体影响肝脂代谢和炎症的分子机制.
主要方法:
- 产生具有主导负HNF1α P291fsinsC突变 (hHNF1Amut/-) 的小鼠模型.
- 从突变和野生型小鼠的肝脏组织的转录组和蛋白质组分析.
- 在体外实验中使用肝细胞评估HNF1α及其突变体对CFD表达和脂质代谢的影响.
主要成果:
- hHNF1Amut/-小鼠在正常饮食中自发发育肝肥胖症.
- 在突变小鼠肝脏中观察到补充因子D (CFD) 和先天免疫反应基因的显著上调.
- 通常情况下,HNF1α抑制了CFD的表达;P291fsinsC突变逆转了这种抑制,促进了CFD的上调.
- 抑制CFD降低了肝细胞中的甘油三水平,表明其在脂质沉积中的作用.
结论:
- HNF1α P291fsinsC突变通过上调CFD表达来促进肝硬化和炎症.
- 在调节肝细胞脂质沉积方面,CFD起着至关重要的作用.
- 针对CFD提供了一个潜在的治疗策略,可以延迟非酒精性脂肪肝疾病的进展.
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