相关实验视频
Updated: Jan 9, 2026
09:40
Magnetic Adjustment of Afterload in Engineered Heart Tissues
Published on: May 5, 2020
6.2K
希斯乳化通过调节TGFB2表达来促进压力过载诱导的心脏缩和心力衰竭
Miao Chen1, Zhen Wang2, Jing Li3
1Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital, The First Affiliated Hospital, Zhejiang University School of Medicine. (M.C., Y.C.).
Circulation research
|December 11, 2025
概括
激素乳酸化,增加糖解的标志物,促进心脏缩和心力衰竭. 抑制这种表观遗传修饰可能为心脏病提供一种新的治疗策略.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 心血管生物学 心血管生物学
- 代谢调节 代谢调节 代谢调节
背景情况:
- 心脏缩涉及代谢变化,包括增强的葡萄糖分解.
- 与葡萄糖溶解相关的素乳酸化调节基因转录,但其在心脏缩中的作用尚不清楚.
研究的目的:
- 为了研究基因素乳化在病理性心脏缩中的作用.
- 确定基因素乳化影响心脏重塑的分子机制.
主要方法:
- 评估了人体和小鼠心脏过度缩小的组素乳化.
- 使用心脏缩的小鼠模型,用药理学或基因调节组织素乳化.
- 在体外心肌细胞模型中使用以研究乳糖化抑制.
- 鉴定了乳化转移酶,并分析了促剂特异性乳化.
- 研究了TGFB2和PI3K/AKT/mTOR信号传递的作用.
主要成果:
- 在失败的心脏中,基斯的乳糖化升高,并促进了缩,纤维化和心脏功能障碍.
- 乳糖抑制减弱的心脏重塑 in vivo 和 in vitro.
- 确定P300和GCN5是乳酸转移酶.
- 在TGFB2促进体的基因组乳化增加了其表达,通过PI3K/AKT/mTOR信号传递驱动过敏.
结论:
- 基斯乳酸化驱动病态心脏缩和心力衰竭.
- 提升TGFB2的调节和PI3K/AKT/mTOR信号的激活调节这些效应.
- 基因组乳基化代表了代谢重编程和高缩信号之间的表观遗传联系,提供了一个潜在的治疗点.
相关概念视频
01:29Heart Failure II: Pathophysiology
668
Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
668
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy
362
Hypertrophic cardiomyopathy, or HCM, is an autosomal dominant genetic disorder characterized by asymmetric left ventricular hypertrophy without ventricular dilation. It is more common in men and is typically diagnosed in young, athletic adults.EtiologyHCM is primarily genetic and is caused by mutations in genes encoding sarcomeric proteins. Researchers have identified over 1400 mutations across at least 11 different genes. Among these, the most frequently occurring mutations are found in the...
362
01:17Pathophysiology of Heart Failure
2.7K
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...
2.7K
01:16TGF - β Signaling Pathway
10.4K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
10.4K
01:27Heart Failure I: Introduction
660
Heart failure refers to a clinical syndrome caused by structural or functional cardiac disorders that prevent the heart from pumping an adequate amount of blood to meet the body's metabolic needs. This condition often arises from myocardial infarction or ischemia, leading to decreased cardiac output, reduced tissue perfusion, impaired gas exchange, fluid volume imbalance, and decreased functional ability.Heart failure can result from disruptions in the mechanisms that regulate cardiac output...
660
01:24Regulation of Angiogenesis and Blood Supply
3.3K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
3.3K