miR-210-5p通过阻断ATP2A2促进肺高血压
Boxiang Wang1, Yidin Xu2, Yilun Huang3
1The First Clinical Medical College, Wenzhou Medical University, Wenzhou, People's Republic of China.
Cardiovascular drugs and therapy
|April 24, 2024
概括
在肺高血压 (PH) 中,miR-210-5p通过抑制质/内质网 Ca2+ 运输2 (ATP2A2) 的ATPase,促进血管重塑. 这项研究阐明了PH中miR-210-5p的致病机制.
科学领域:
- 心血管研究研究心血管研究
- 分子生物学分子生物学
- 细胞生理学 细胞生理学
背景情况:
- 肺高血压 (PH) 涉及非正常表达的ATPase 质体/内质网 Ca2+ 运输2 (ATP2A2).
- 微RNAs (miRNAs),如miR-210-5p,涉及PH病原性,但它们的确切作用尚不清楚.
研究的目的:
- 为了研究 miR-210-5p 和 ATP2A2 之间的机械相互作用,在单克罗他林 (MCT) 诱导的肺高血压的老鼠模型中.
- 阐明miR-210-5p在调节ATP2A2表达中的作用及其对肺动脉光滑肌细胞 (PASMCs) 的下游影响.
主要方法:
- 建立一种MCT诱导PH的老鼠模型和一个体外PASMC模型.
- 定量实时PCR和西部抹迹来评估ATP2A2和miR-210-5p的表达.
- 双化酶试验证实了miR-210-5p对ATP2A2的直接向.
- 细胞增殖和细胞内水平的评估.
主要成果:
- 经MCT诱导的PH大鼠在肺组织中表现出增加的miR-210-5p和减少的ATP2A2表达.
- 实验室研究证实,高的miR-210-5p降低ATP2A2的调节,并促进PASMC的扩散.
- 双化酶试验验证了ATP2A2作为miR-210-5p的直接标.
- 抑制ATP2A2导致PASMCs中的细胞质Ca2+水平增加.
结论:
- miR-210-5p通过抑制ATP2A2.2,作为MCT诱导PH的关键调解剂,通过抑制ATP2A2.
- 这种抑制有助于肺血管重塑和疾病进展.
- 针对miR-210-5p/ATP2A2轴可能为PH提供治疗策略.
相关概念视频
Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers
159
Receptor tyrosine kinase inhibitors (TKIs) and calcium channel blockers (CCBs) are two critical categories of drugs employed in the treatment of pulmonary artery hypertension (PAH). PAH is a disease that causes high blood pressure in the pulmonary arteries, resulting in chest pain, fatigue, and shortness of breath.
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
TKIs, such as imatinib (Gleevec), are particularly effective in tackling the growth and mitogenic factors that become upregulated in PAH patients. These factors contribute to the...
159
Treatment for Pulmonary Arterial Hypertension: Phosphodiesterase Inhibitors
148
Phosphodiesterase 5 (PDE5) inhibitors are potent enzymes that function to hydrolyze cyclic nucleotides to their corresponding 5' monophosphates. Their unique biochemical properties have been applied in treating Pulmonary Arterial Hypertension (PAH).
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
Among the PDE5 inhibitors, sildenafil (Revatio) stands out as a competitive and selective inhibitor. It operates by elevating cellular levels of cGMP and augmenting signaling through the cGMP-PKG pathway, promoting vasodilation. Upon oral...
148
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists
156
Endothelins (ETs) are potent vasoactive peptides critical in the human body's various physiological and pathological processes. One of the most promising therapeutic strategies for treating pulmonary arterial hypertension (PAH) involves counteracting the effects of these endothelins using a class of drugs known as endothelin receptor antagonists.
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
ETs are synthesized through a complex sequence of enzymatic steps, primarily involving an enzyme referred to as endothelin-converting enzyme...
156
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
169
Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
169
ATP Synthase: Mechanism
14.5K
In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased...
14.5K
Transducer Mechanism: Enzyme-Linked Receptors
2.4K
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
2.4K


