ECM1通过PCBP1-介导的铁平衡来保护肝脏肥胖症
Danyan Zhang1,2, Ayiguzhali Abulitipu3, Pengcheng Pang1,2
1School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China.
Hepatology (Baltimore, Md.)
|May 15, 2025
概括
细胞外矩阵蛋白1 (ECM1) 对于预防代谢功能障碍相关的脂肪肝炎 (MASH) 至关重要. ECM1维持铁平衡,减少脂质过氧化和肝病进展,为MASH提供潜在的治疗点.
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
- 代谢疾病研究研究
背景情况:
- 细胞外矩阵蛋白1 (ECM1) 抑制TGF-β信号传递和肝星细胞激活,减轻肝纤维化.
- ECM1缺乏与脂肪酸合成和炎症的代谢变化有关,这表明肝脏脂肪的作用.
研究的目的:
- 为了研究ECM1在代谢功能障碍相关的脂肪性肝病 (MASLD) 发病过程中的作用.
- 阐明ECM1影响MASLD的基本机制.
主要方法:
- 野生类型和ECM1缺乏的小鼠肝脏的RNA测序.
- 在人类MASH样本和小鼠模型中评估肝脏ECM1表达.
- 涉及ECM1-PCBP1相互作用和铁平衡的机制研究.
主要成果:
- 在MASH患者和小鼠模型中,肝脏ECM1表达显著降低.
- 过度表达ECM1可以改善肝脏的胰岛素耐药性,肥胖症和炎症; ECM1切除会加剧MASH.
- ECM1与PCBP1相互作用,抑制铁过载和脂质过氧化,阻止MASH的进展.
结论:
- ECM1是MASH中的关键调节者,通过PCBP1-介导的铁稳态调节脂质过氧化.
- 针对ECM1恢复PCBP1依赖的铁平衡,为MASH提供了一个新的治疗策略.
相关概念视频
Liver Physiology
393
The liver, an essential organ in the human body, performs over 200 vital functions that can be broadly categorized into metabolic, hematological, endocrine regulation, and bile production.
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
Metabolic Regulation:
The liver is the central organ involved in regulating blood composition. It stabilizes blood glucose levels, maintaining them within the range of 70–110 mg/dL. When these levels drop, the liver breaks down glycogen reserves and releases glucose into the bloodstream. It can...
393
Cell Specific Gene Expression
13.3K
Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
13.3K
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
2.2K
Erythropoietin-producing hepatocellular carcinoma receptor (Eph) and its ligand, Eph receptor-interacting protein (Ephrin) were first discovered in the human carcinoma cell line, hence the name. Ephrin-Eph interaction guides cells to reach their appropriate location in adult tissues. They also play an essential role in the immune system by helping in immune cell migration, adhesion, and activation. Based on their structure and function, Eph is divided into two classes — EphA and EphB.
2.2K
Regulation of the Unfolded Protein Response
2.3K
Inositol-requiring kinase one or IRE1 is the most conserved eukaryotic unfolded protein response (UPR) receptor. It is a type I transmembrane protein kinase receptor with a distinctive site-specific RNase activity. As the binding mechanics of the misfolded proteins with the N-terminal domain of IRE-1 are unclear, three binding models — direct, indirect, and allosteric -- are proposed for receptor activation. Nevertheless, it is known that once a misfolded protein associates with IRE1, it...
2.3K
Liver Regeneration
3.2K
The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are...
3.2K


