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细胞通信网络因子2的光滑肌特异性删除会导致严重的大动脉形和动脉样硬化

Jannik H Larsen^1,2, Julie S Hegelund¹, Matilde K Pedersen¹

¹Department of Molecular Medicine, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.

Cardiovascular research

|August 21, 2024

概括

细胞通信网络因子2 (CCN2) 对动脉健康至关重要,维持平滑肌肉细胞 (SMC) 功能并预防动脉样硬化. CCN2 缺乏严重恶化动脉样硬化和大动脉完整性.

科学领域:

心血管生物学心血管生物学
细胞外矩阵生物学细胞外矩阵生物学
纤维化研究纤维化研究

背景情况:

细胞通信网络因子2 (CCN2) 是一种与纤维性疾病相关的母细胞蛋白.
目前正在进行的临床试验正在探索抗CCN2疗法.
在健康的动脉组织中,CCN2特别丰富.

研究的目的:

研究CCN2在维持光滑肌肉细胞 (SMC) 现型中的作用.
确定CCN2对动脉样硬化的保护功能.
假设CCN2在正常动脉壁结构和功能中的关键作用.

主要方法:

生成了全球和SMC特定的Ccn2淘汰赛小鼠模型.
诱导的高脂血症,以评估动脉样硬化发展.
使用光标记的LDL注射和共聚焦显微镜.
分析了人类状动脉斑块的转录数据 (Athero-Express队列).
为CCN2表达进行了现场杂交.

主要成果:

Ccn2缺乏导致SMC脱差,中枢厚化和大动脉延长.
超脂血症在淘汰赛模型中显著增加了动脉样硬化 (17倍),影响了90%的动脉.
中等脂质积累和增加的LDL保留是早期的病变事件.
CCN2与人类动脉斑块中的SMC标记物相关.
在人类病变中,CCN2表达局部化到纤维状盖.

结论:

CCN2是正常动脉壁的关键组成部分,对于SMC分化和大动脉完整性至关重要.
CCN2对动脉样硬化的发展起着关键的保护作用.
需要进一步研究抗CCN2疗法对血管的影响.

关键词:

大动脉的大动脉.动脉样硬化是一种动脉样硬化.蜂通信网络因素2 (CCN2) 是一个顺滑肌肉细胞是什么?

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