相关实验视频
Updated: May 16, 2025

Optimized Analysis of In Vivo and In Vitro Hepatic Steatosis
Published on: March 11, 2017
与膜相关的CH型环状指2通过向脂肪酸合成酶来防止与代谢功能障碍相关的脂肪肝疾病
Dongsheng Ni1, Zhaolai Qi1, Shuang Ma1
1The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing Hospital/National Center of Gerontology of National Health Commission, Beijing, 100730, PR China; Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100730, PR China.
膜相关的CH型环状指2 (MARCH2) 自主ubiquitination调节了代谢功能障碍相关的脂肪性肝病 (MAFLD) 中的肝脂稳态. 针对MARCH2脂肪酸合成酶 (FASN) 途径为MAFLD提供了一个有前途的治疗策略.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 肝病学 肝病学是一种肝病学.
背景情况:
- 与代谢功能障碍相关的脂肪肝疾病 (MAFLD) 是与脂质代谢相关的日益严重的公共卫生问题.
- 乌比基因结合酶活性对于调节MAFLD中肝脂平衡至关重要.
- 涉及MAFLD病原体的特定泛素酶需要进一步确定.
研究的目的:
- 研究膜相关环CH型指2 (MARCH2) 在MAFLD进展中的作用和机制.
- 阐明MARCH2在肝脂代谢和相关代谢异常中的作用.
主要方法:
- 使用复合腺相关病毒 (rAAV) 和lentiviral转导用于基因操纵.
- 采用免疫涂抹,定量PCR和无处不在测试来评估蛋白质水平和修改.
- 进行了血清生物化学分析,免疫沉和质谱测量以获得机械洞察力.
- 在HepG2细胞和高脂肪饮食诱导的MAFLD小鼠模型中研究了MARCH2功能.
主要成果:
- MARCH2过度表达抑制了HepG2细胞中的脂质积累;非活性变体没有.
- 在刺激时,MARCH2经历了自我多基化和蛋白质体降解.
- 3月2日缺乏症在小鼠中加剧了MAFLD表型,包括肥胖,胰岛素耐药性和肝硬化症.
- MARCH2促进脂肪酸合成酶 (FASN) 的降解,从而减少新的脂质生成.
- 肝脏特异性的MARCH2过度表达通过减少FASN.通过减轻ob/ob小鼠的MAFLD改善了MAFLD.
结论:
- 在MAFLD中,自我ubiquitination对于维持肝脂平衡至关重要.
- MARCH2-FASN轴代表了MAFLD和相关代谢障碍的潜在治疗目标.
更多相关视频
07:03Author Spotlight: Establishing MASLD Cell Models for Investigating Disease Mechanisms and the Lipid-Lowering Effects of Koumiss
Published on: July 19, 2024
10:59Label-Free Imaging of Lipid Storage Dynamics in Caenorhabditis elegans using Stimulated Raman Scattering Microscopy
Published on: May 28, 2021
相关概念视频
Overview of Fatty Acid Metabolism
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Overview of Lipid Metabolism
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipids as Anchors
The carboxy-terminal of most of the prenylated proteins, such as Ras proteins, contains...
Cholesterol: Significance and Regulation
Considering cholesterol and...
Lipid Digestion
Smooth Endoplasmic Reticulum
The ER provides optimal conditions for synthesizing steroid hormones and lipids, such as phospholipids and triglycerides. Traditionally, lipid metabolism was considered to be a smooth ER function. However, there is no direct evidence to prove that rough ER is completely excluded from lipid...