相关实验视频

Updated: May 15, 2025

Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation

Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation

Published on: May 31, 2016

揭示了GATA4在内皮细胞衰老和动脉样硬化发展中的作用

Chun-Min Kang¹, Jing-Jing Zhao², Xi-Xi Xie³

¹The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510120, China; Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, Guangdong, 510120, China; State Key Laboratory of Dampness Syndrome of Chinese Medicine, Guangzhou, Guangdong, 510120, China.

Atherosclerosis

|April 10, 2025

概括

内皮细胞中的高GATA4通过激活NFκB2和诱导衰老相关分泌表型 (SASP) 来驱动动动脉硬化,突出了GATA4作为血管疾病的治疗标.

科学领域:

心血管生物学心血管生物学
细胞衰老细胞衰老
动脉样硬化的分子机制

背景情况:

细胞衰老与动脉样硬化有关,但潜在的机制尚不清楚.
GATA4是已知的纤维细胞衰老的调节者.
GATA4在内皮细胞 (EC) 衰老和动脉样硬化中的作用尚不清楚.

研究的目的:

研究GATA4在内皮细胞衰老中的作用.
阐明GATA4影响动脉样硬化发展的机制.
为了确定GATA4是否是动脉样硬化的潜在治疗标.

主要方法:

使用H2O2诱导EC衰老在人类初级脉EC中.
从老年个体和小鼠的EC中量化GATA4水平.
在体内使用ApoE-/-小鼠进行EC特异性GATA4操纵的研究.
分子分析包括RT-qPCR,西部斑,ChIP-PCR和ELISA.

主要成果:

在衰老的EC,老化的动脉组织中,GATA4蛋白水平增加,与动脉样硬化进展相关.
GATA4的倒退减少了EC衰老,功能障碍和单细胞粘附.
GATA4激活NFκB2转录,从而诱导SASP因子 (IL-6,IL-8,CXCL1,CXCL3,ICAM-1). 这样,GATA4会激活NFκB2转录,从而诱导SASP因子 (IL-6,IL-8,CXCL1,CXCL3,ICAM-1).
在EC中GATA4过度表达加剧了ApoE-/-小鼠的血管衰老,斑块形成和心脏功能障碍.

结论:

在EC中GATA4升高通过GATA4-NFκB2-SASP通路促进动脉样硬化.
向GATA4可能为动脉样硬化和相关血管疾病提供一种新的治疗策略.

关键词:

动脉样硬化是一种动脉样硬化.内皮细胞衰老细胞衰老在 GATA4 中,GATA4 与衰老相关的分泌表现型

更多相关视频

Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues

Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues

Published on: June 3, 2019

Author Spotlight: A Neonatal Heterotopic Rat Heart Transplantation Model for the Study of Endothelial-to-Mesenchymal Transition

Author Spotlight: A Neonatal Heterotopic Rat Heart Transplantation Model for the Study of Endothelial-to-Mesenchymal Transition

Published on: July 21, 2023

相关概念视频

Regulation of Angiogenesis and Blood Supply

Regulation of Angiogenesis and Blood Supply

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...