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一种非典型的动脉动脉基因化基因,可促进晚期动脉样硬化和肝脏脂质生成

Omar El Bounkari¹, Chunfang Zan², Bishan Yang²

¹Division of Vascular Biology, Institute for Stroke and Dementia Research (ISD), LMU Klinikum, Ludwig Maximilian University (LMU) Munich, Munich, Germany. Omar.El_Bounkari@med.uni-muenchen.de.

Nature communications

|March 7, 2025

概括

巨细胞迁移抑制因子-2 (MIF-2) 驱动动动脉硬化和肝脏脂肪的积累. 阻止MIF-2可降低血管炎症并改善脂质水平,为心血管疾病提供新的治疗点.

科学领域:

心血管生物学心血管生物学
炎症和免疫学炎症和免疫学
代谢疾病代谢疾病

背景情况:

动脉样硬化是一种由脂质驱动的动脉炎症,导致心脏病发作和中风.
细胞因子和化学因子是动脉样硬化炎症过程中的关键调解者.

研究的目的:

确定动脉样硬化和相关的代谢功能障碍的新分子标.
为了研究D-多巴克罗姆复合酶/巨细胞迁移抑制因子-2 (MIF-2) 在动脉生成和肝脂代谢中的作用.

主要方法:

在动脉样硬化研究中使用过多脂血症的Apoe-/-小鼠模型.
采用了Mif-2缺乏和药物阻断策略.
进行了肝脏转录组学,脂组学,肝细胞培养和FLIM-FRET显微镜.
分析患者样本,包括冠状动脉疾病患者的状斑块和血.

主要成果:

在小鼠中,MIF-2 缺乏和阻塞显著减少了动脉样硬化病变的形成和血管炎症.
阻断MIF-2导致血脂水平降低,并通过抑制脂质生成抑制肝脏脂质积累.
确定了CXCR4作为MIF-2的受体,通过PI3K/AKT信号传递调解其益动脉和脂质效应.
人类动脉样硬化斑块中MIF-2的升高调节,与疾病严重程度相关.

结论:

MIF-2作为一种非典型的化学激素,促进动脉样硬化和肝脏脂质积累.
针对MIF-2提供了一种潜在的心血管疾病治疗策略,通过解决血管炎症和代谢功能障碍.
在动脉样硬化病变发生过程中,MIF-2代表了炎症和代谢途径之间的新联系.

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