在心脏纤维化中使用Redox架构的信号网络
Yanxu Zhang1, Yuting Zhong1, Qun Zeng1
1Department of Biochemistry and Molecular Biology, Hengyang Medical College, University of South China, Hengyang, China.
Biochemical and biophysical research communications
|August 29, 2025
概括
通过激活关键信号通路来驱动心脏纤维化. 通过向ROS或这些通路,通过减少心肌纤维化恢复心脏功能.
科学领域:
- 心脏病学
- 分子生物学
- 生物化学
背景情况:
- 心脏纤维化涉及过度的细胞外基质 (ECM) 沉积,导致心肌硬化和心脏功能受损.
- 反应性氧物种 (ROS) 是心脏纤维化的核心,启动和放大亲纤维信号级联.
- 四个关键的信号通路转化生长因子-β (TGF-β),基激活蛋白激酶 (MAPK),核因子卡帕B (NF-κB) 和酸丁醇3-激酶 (PI3K) /蛋白激酶B (Akt) 涉及.
研究的目的:
- 阐明ROS在心脏纤维化中的作用.
- 了解关键亲纤维信号通路之间的交叉声.
- 确定针对心肌纤维化的潜在治疗策略和相关的信号节点.
主要方法:
- 对心脏纤维化机制的现有文献进行审查和综合.
- 分析ROS在激活TGF-β,MAPK,NF-κB和PI3K/Akt信号中的作用.
- 对延续纤维细胞激活和ECM合成的自我维持网络的检查.
主要成果:
- ROS作为四个主要的亲纤维信号级联的关键启动器和放大器.
- 相互连接的信号通路创建了一个自我维持的网络,促进纤维细胞激活和ECM沉积.
- 针对ROS生成或下游信号节点是一种合理的治疗方法.
结论:
- 在心脏纤维化的发病过程中,反应性氧物种是关键因素.
- 通过ROS介导的信号通路的中断是治疗心肌纤维化的有希望的策略.
- 调节ROS和相关级联可以通过减轻纤维化恢复心脏功能.
相关概念视频
Redox Reactions
59.5K
Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
59.5K
The Supercomplexes in the Crista Membrane
3.2K
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...
3.2K
Structure of Cardiac Muscles
20.4K
Cardiac muscle, or myocardium, is a specialized type of muscle found exclusively in the heart. Its unique structural and functional characteristics enable the heart to perform its vital role of pumping blood throughout the body continuously and rhythmically. The cardiac muscle cells, or cardiomyocytes, possess an endomysium and perimysium but do not have an epimysium.
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
Compared to skeletal muscles, cardiac muscle cells are small and mostly have a single nucleus. Additionally, they are usually...
20.4K
Cardiomyopathy I: Introduction and Classification
848
Cardiomyopathy, or CMP, is a group of diseases affecting the myocardial structure, impairing its ability to pump blood effectively. This condition can lead to arrhythmias, heart failure, or sudden cardiac death.Cardiomyopathies are classified into primary and secondary categories:Primary Cardiomyopathy refers to conditions involving only the heart muscle that are often idiopathic (of unknown cause) or genetic. They primarily affect the myocardium without the involvement of other systemic...
848
Cardiomyopathy IV: Restrictive Cardiomyopathy
884
Restrictive cardiomyopathy (RCM) is a rare heart muscle disease characterized by impaired ventricular filling due to stiffened ventricular walls, leading to significant diastolic dysfunction.EtiologyRestrictive cardiomyopathy can arise from both inherited and acquired diseases, many of which are systemic. It is categorized into four main types: infiltrative, storage, non-infiltrative, and endomyocardial diseases.Infiltrative diseases, such as amyloidosis, lead to RCM by depositing amyloid...
884
Redox Reactions
1.4K
Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
1.4K


