相关实验视频

Updated: Jul 30, 2026

Isolation and Characterization of Primary Rat Valve Interstitial Cells: A New Model to Study Aortic Valve Calcification

Isolation and Characterization of Primary Rat Valve Interstitial Cells: A New Model to Study Aortic Valve Calcification

Published on: November 20, 2017

MARCH5通过RACGAP1-DRP1相关的线粒体质量控制改善了大动脉的化

Jialiang Zhang¹, Yaoyu Zhang², Wenhua Lei²

¹Laboratory of Cardiac Structure and Function, Institute of Cardiovascular Diseases, West China Hospital, Sichuan University, Chengdu 610041, PR China; Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Cardiac Structure and Function Research Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, PR China.

Biochimica et biophysica acta. Molecular cell research

|January 29, 2025

概括

线粒体E3泛素酶MARCH5缺乏会损害线粒体质量控制,通过激活RACGAP1和DRP1.1,促进大动脉的化. 恢复MARCH5或抑制RACGAP1可能会带来治疗效益.

科学领域:

心血管生物学心血管生物学
线粒体生物学线粒体生物学
细胞应激反应的应激反应

背景情况:

线粒体E3泛素化酶 (MARCH5) 对于线粒体功能至关重要.
大动脉结石化 (AVC) 涉及线粒体质量控制受损.
目前尚不清楚MARCH5在AVC病原发生中的具体作用.

研究的目的:

研究MARCH5在大动脉结石化中的作用和潜在机制.
探索MARCH5之间的关系,线粒体动力学和膜细胞中的骨质分化.

主要方法:

分析了人类大动脉中的MARCH5表达.
在人类大动脉膜间歇细胞 (HVICs) 中评估了线粒体形态,骨质分化和氧化酸化.
在体内研究中使用了MARCH5-knockdown和ApoE-knockout小鼠模型.

主要成果:

在化门中,MARCH5蛋白水平下降,与线粒体质量控制受损相关.
在HVICs中,MARCH5抑制加速了骨质转化,而过度表达具有保护作用.
MARCH5与RACGAP1相互作用,促进其无处不在,导致DRP1激活和线粒体功能障碍. 抑制RACGAP1逆转了MARCH5沉默引起的化.

结论:

降低MARCH5的调节促进RACGAP1的无化和DRP1的激活,损害了线粒体质量控制,并导致大动脉结石化.
MARCH5-RACGAP1-DRP1轴代表了大动脉结石化的潜在治疗标.

关键词:

大动脉的化化.DRP1 DRP1 的使用方法 3月5日时间:线粒体质量控制的质量控制骨质变异的分化骨质变异的分化在RACGAP1的基础上.

更多相关视频

Isolation of Mouse Interstitial Valve Cells to Study the Calcification of the Aortic Valve In Vitro

Isolation of Mouse Interstitial Valve Cells to Study the Calcification of the Aortic Valve In Vitro

Published on: May 10, 2021

Isolation of Human Primary Valve Cells for In vitro Disease Modeling

Isolation of Human Primary Valve Cells for In vitro Disease Modeling

Published on: April 16, 2021

相关概念视频

Mitral Valve Prolapse I: Introduction

Mitral Valve Prolapse I: Introduction

IntroductionThe mitral valve, one of the heart's four valves, regulates blood flow. These valves have flaps that open and close to direct blood properly through the heart and body. During each heartbeat, the flaps open for blood to pass through and seal shut to prevent backflow. Specifically, the mitral valve opens to allow blood flow from the heart's upper left chamber to the lower left chamber. It then closes securely as the lower left chamber contracts to pump blood to the body, preventing...

Mitral Stenosis III: Medical Management

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...

Aortic Regurgitation III: Medical Management

Aortic Regurgitation III: Medical Management

Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...