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巨细胞-Kruppel-Like转录因子6信号传递促进了实验性异质生成

Hang Pong Ng¹, Atif Zafar¹, Rachel Diamond-Zaluski¹

¹Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio.

The American journal of pathology

|June 24, 2025

概括

克鲁佩尔类因子6 (KLF6) 缺乏会减少炎症和动脉样硬化斑块的发展. KLF6促进巨细胞中的炎症基因表达,推动动脉样硬化进展.

科学领域:

免疫学免疫学免疫学
心血管生物学心血管生物学
分子生物学分子生物学

背景情况:

巨细胞是动脉样硬化的核心,影响斑块的开始,生长和破裂.
这些先天性免疫细胞通过炎症,矩阵降解和细胞分裂来协调动脉生成.
了解巨细胞调节对于开发动脉样硬化疗法至关重要.

研究的目的:

研究克鲁佩尔类转录因子6 (KLF6) 在巨驱动炎症和动脉样硬化中的作用.
确定KLF6在巨细胞中影响益炎性基因表达的分子机制.
评估KLF6缺乏对动脉样硬化斑块发育的体内影响.

主要方法:

在被养高脂肪/高胆固醇饮食的Apoe-null小鼠中利用了骨髓特异性KLF6缺乏症.
在巨细胞上进行了综合转录组学和基因组丰富分析 (GSEA).
研究了涉及KLF6,干扰素调节因子1 (IRF1) 和瘤缩因子 (TNF) 信号的分子通路.

主要成果:

KLF6 缺乏在巨细胞中显著减弱了前炎性基因表达.
骨髓细胞KLF6缺陷减少了动脉样硬化病变的形成和巨细胞的活体积累.
KLF6 缺乏减少了TNF诱导的基因标,干扰素反应和炎症信号通路.
发现KLF6可以促进IRF1信号传递,增强TNF诱导的炎症性基因表达.

结论:

KLF6通过促进巨细胞中的炎症基因表达,发挥了促动脉的作用.
向KLF6可能代表了动脉样硬化的新疗法策略.
KLF6对炎症信号通路的调节在动脉动脉生成中至关重要.

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