衰老的内皮细胞:在动脉样硬化斑块内的细胞通信网络的关键指挥官
Fujia Xie1, Cheng Xi1, Guoqing Bao1
1General Surgery, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China.
Frontiers in immunology
|February 20, 2026
概括
内皮细胞衰老通过释放炎症因素来积极驱动动动脉硬化. 向衰老细胞和特定途径为血管衰老提供了新的治疗策略,需要针对性别的具体方法.
科学领域:
- 血管生物学 血管生物学
- 衰老研究研究 衰老研究
- 免疫学 免疫学 免疫学
背景情况:
- 内皮细胞衰老 (sECs) 现在被认为是动脉样硬化的关键驱动因素,而不仅仅是衰老的标志物.
- sECs表现出独特的特征,如生长停止,改变的染色素,并分泌一种与衰老相关的分泌表型 (SASP).
- SASP因子,囊泡和sECs的信号创建了一个亲动脉样硬化微环境.
研究的目的:
- 阐明内皮细胞衰老在动脉样硬化中的作用.
- 探索参与sEC表型和SASP生产的信号通路.
- 为血管衰老中的内皮老化提出新的治疗点和框架.
主要方法:
- 关于内皮衰老和动脉样硬化的当前文献的综述和综合.
- 对关键信号通路 (p53/p21,p16/Rb,mTOR,NF-κB,cGAS-STING) 的分析.
- 在代谢功能障碍和血管炎症中开发RBP4和STRA6轴的理论框架.
主要成果:
- 通过SASP,免疫细胞招募和血管细胞重编程,sECs积极促进动脉样硬化.
- 已确定的通路如p53/p21和p16/Rb诱导衰老,而mTOR,NF-κB和cGAS-STING维持SASP.
- 建议RBP4-STRA6轴将代谢压力与内皮衰老和炎症联系起来.
结论:
- 衰老的内皮细胞是动脉样硬化微环境的关键调节者和潜在的治疗点.
- 老化剂,老化剂和途径抑制剂对血管衰老有希望.
- 治疗策略必须考虑老化和代谢弹性中的性别特异性差异.
更多相关视频
相关概念视频
01:30Atherosclerosis I: Introduction
1.5K
Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
1.5K
01:38Inflammation
62.6K
Overview
62.6K
01:26Coronary Artery Disease II: Pathophysiology
670
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
670
01:20Overview of the Vascular System
3.6K
The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
3.6K
01:24Regulation of Angiogenesis and Blood Supply
3.7K
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...
3.7K
01:30Peripheral Artery Disease I: Introduction
426
Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
426