通过线粒体通路,HINT2可以防止压力过载诱导的心脏重塑
Nan Zhang1,2, Zi-Ying Zhou1,2, Yan-Yan Meng1,2
1Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, China.
Journal of cellular and molecular medicine
|March 28, 2024
概括
希斯蒂丁三核酸结合蛋白2 (HINT2) 保护心脏重塑. 过度表达HINT2会减少心脏功能障碍,而不足会使心脏功能障碍恶化,突出显示HINT2.
科学领域:
- 心血管生物学 心血管生物学
- 线粒体功能的功能
- 分子心脏病学分子心脏病学
背景情况:
- 核酸三合一核酸结合蛋白2 (HINT2) 是一种参与核酸代谢的线粒体酶.
- 以前的研究将HINT2与缺血性心脏病联系起来,但其在心脏重塑中的作用尚不清楚.
研究的目的:
- 研究HINT2在心脏重塑过程中的功能.
- 确定HINT2对心脏的影响背后的分子机制.
主要方法:
- 对心脏衰竭和心肌细胞中HINT2表达的分析.
- 涉及HINT2过度表达和缺陷的研究在压力下的小鼠模型中 (大动脉带).
- 基因表达分析专注于线粒体通路和细胞实验与rotenone.
主要成果:
- 在心脏衰竭和多变细胞中,HINT2的表达减少.
- 过度表达HINT2可缓解心脏缩和功能障碍;缺乏HINT2可加剧这些情况.
- HINT2上调与增强的氧化酸化和线粒体复合体I基因表达相关.
- 线粒体复合体的破坏 I 否定了 HINT2 的保护作用.
结论:
- HINT2通过调节线粒体复合体I活动和组装来缓解压力过载引起的心脏重塑.
- HINT2代表了管理心脏重塑的潜在治疗标.
更多相关视频
07:13A Rat Model of Pressure Overload Induced Moderate Remodeling and Systolic Dysfunction as Opposed to Overt Systolic Heart Failure
Published on: April 30, 2020
6.4K
07:40Protection of H9c2 Myocardial Cells from Oxidative Stress by Crocetin via PINK1/Parkin Pathway-Mediated Mitophagy
Published on: May 26, 2023
1.1K
相关概念视频
Pathophysiology of Heart Failure
1.6K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
1.6K
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
424
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
424
Electron Transport Chain: Complex I and II
13.2K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
13.2K
Heart Failure Drugs: Diuretics
370
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
370
