相关实验视频
Updated: Jul 1, 2026
07:53
Proteomic Profiling of Macrophages by 2D Electrophoresis
Published on: November 4, 2014
12.7K
深入的蛋白质组分析揭示了肝纤维化中巨细胞的表型多样性
Wenting Yang1, Liling Chen2,1, Jian Zhang1
1State Key Laboratory of Medical Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China.
Journal of proteome research
|October 10, 2024
概括
肝纤维化涉及不同的巨细胞种群. 单细胞衍生的巨细胞分为两种类型:类似于寄居细胞的巨细胞和与炎症和疾病进展相关的蛋白质组改变的巨细胞.
科学领域:
- 免疫学 免疫学 免疫学
- 蛋白质组学是指蛋白质组学.
- 肝病学 肝病学是一种肝病学.
背景情况:
- 巨细胞是关键的免疫细胞,在健康和疾病中发挥着不同的作用.
- 虽然存在表观基因组和转录基因组数据,但病理学中巨细胞蛋白质的理解较少.
- 肝脏巨细胞在肝脏疾病中至关重要,但它们的异质性需要进一步进行蛋白质学研究.
研究的目的:
- 描述肝纤维化期间肝细胞巨细胞的蛋白质多样性.
- 在纤维性肝脏中研究单细胞衍生的巨细胞的分化途径.
- 为了确定参与肝纤维化病原发生的巨细胞子集.
主要方法:
- 使用无标签的蛋白质组方法.
- 在碳四化物 (CCl4) 诱导的肝纤维化模型中分析了肝细胞巨池.
- 量化和比较不同巨细胞群的蛋白质表达特征.
主要成果:
- 观察到胚胎衍生的库弗弗细胞 (EmKCs) 的减少和单细胞衍生的库弗细胞 (MoKCs) 和CLEC2-负性巨细胞的增加.
- 蛋白质组分析显示MoKCs与EmKCs相似,而CLEC2-阴性巨细胞显示出显著的蛋白质组差异.
- 阴性CLEC2巨细胞表现出与炎症和抗原处理相关的蛋白质的高表达,这表明它们在肝纤维化病原发生过程中发挥了作用.
结论:
- 肝纤维化的单细胞分化导致至少有两个不同的巨细胞群.
- 阴性CLEC2巨体代表着具有炎症功能的独特子集,可能有助于肝纤维化.
- 这项研究强调了肝纤维化期间肝细胞巨池内的显著异质性.
相关概念视频
01:09Introduction to Fibroblasts
Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
00:55Fibrous Proteins
Fibrous proteins are either long and narrow proteins or assemble to form long and thin structures. They contain repetitive units and usually consist of either alpha helices or beta sheets and, in rare cases, a mix of both. The amino acids in the primary structure often consist of repeating amino acid sequences. The role of fibrous proteins is primarily structural. Many are located in the extracellular matrix and are present in connective tissues to impart strength and joint mobility. They are...
01:27Liver Histology
The microscopic anatomy of the liver is a complex and intricate system that comprises numerous structural units known as liver lobules, each of which is comparable in size to a sesame seed. These hexagonal structures consist of plates of liver cells or hepatocytes, which are characterized by their versatility and abundance of cellular apparatus like rough and smooth ER, Golgi apparatus, peroxisomes, and mitochondria.
Hepatocytes perform a variety of essential functions. They secrete...
Hepatocytes perform a variety of essential functions. They secrete...