相关实验视频

Updated: Jun 9, 2025

Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment

Characterization of Immune Cell-derived Extracellular Vesicles and Studying Functional Impact on Cell Environment

Published on: June 2, 2020

心周中的小细胞外囊泡在冠状动脉疾病中调节巨细胞免疫表型

Soumaya Ben-Aicha¹, Maryam Anwar¹, Gemma Vilahur²

¹National Heart and Lung Institute, Imperial College London, London, United Kingdom.

JACC. Basic to translational science

|October 24, 2024

概括

冠状动脉疾病 (CAD) 涉及心周巨细胞的变化. 来自CAD患者的小细胞外囊泡 (sEV) 携带miRNA-6516-5p,减少保护性巨细胞功能和脂质吸收.

科学领域:

心血管生物学心血管生物学
免疫学免疫学免疫学
细胞外囊泡研究研究

背景情况:

冠状动脉疾病 (CAD) 构成了全球重大健康负担.
周心巨细胞在心脏健康和炎症中起着至关重要的作用.
小型细胞外囊泡 (sEVs) 越来越多地被认为是疾病中细胞间通信的关键媒介.

研究的目的:

调查心周巨和sEVs在CAD病变发生过程中的作用.
在CAD的背景下,确定sEVs影响巨细胞功能的特定分子机制.

主要方法:

来自CAD患者的心周巨的分析,以检测标记物表达.
在实验室中用来自CAD心周液的sEVs刺激巨细胞.
包括微RNA (miRNA) 在内的sEV货物的表征.
对巨细胞脂质吸收和CD36表达的评估.

主要成果:

在CAD患者中,心周巨细胞表现出保护性标记物的减少表达.
通过CAD衍生的sEVs刺激的巨体显示出类似的功能变化.
发现sEVs含有miRNA-6516-5p.
miRNA-6516-5p直接抑制了CD36的表达,损害了巨细胞的脂质代谢.

结论:

通过sEV介导的miRNA-6516-5p的输送有助于减少CAD中保护性心周巨的减少.
这些发现突出了一个新的机制,将sEVs,miRNAs和冠状动脉疾病中的巨功能障碍联系起来.
准sEV-miRNA通路可能为CAD提供治疗潜力.

关键词:

冠状动脉疾病是一种冠状动脉疾病.巨细胞是什么?巨细胞是什么?这就是miRNAs.心周周流体是心周周流体.小小的细胞外囊泡.

更多相关视频

Isolation of Macrophage Subsets and Stromal Cells from Human and Mouse Myocardial Specimens

Isolation of Macrophage Subsets and Stromal Cells from Human and Mouse Myocardial Specimens

Published on: December 17, 2019

An In vitro Model to Study Heterogeneity of Human Macrophage Differentiation and Polarization

An In vitro Model to Study Heterogeneity of Human Macrophage Differentiation and Polarization

Published on: June 12, 2013

相关概念视频

Inflammation

Inflammation

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...

Overview of Exosomes

Overview of Exosomes

Exosomes are stable, lipid bilayer-enclosed vesicles capable of crossing biological barriers. They can carry a wide range of molecules required for intercellular communication. Once exosomes are released from the cell where they originated, they enter a recipient cell through various pathways such as fusion, receptor-mediated endocytosis, macropinocytosis, and phagocytosis.
Stahl et al. discovered exosomes in 1983, but the exosomes were initially considered waste products released from the...