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向巨细胞中的Unc5b驱动动动脉硬化回归和亲解决免疫细胞功能

Martin Schlegel¹, Yannick Cyr², Alexandra A C Newman²

¹Department of Anesthesiology and Intensive Care Medicine, Technical University of Munich, Klinikum rechts der Isar, Technical University of Munich (TUM) School of Medicine and Health, Munich 81675, Germany.

Proceedings of the National Academy of Sciences of the United States of America

|October 22, 2024

概括

向巨细胞中的Unc5b受体显著降低了小鼠的动脉样硬化斑块负担和复杂性. 删除Unc5b促进了有益的免疫细胞变化,这表明它是动脉样硬化回归的治疗标.

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
分子医学是分子医学.

背景情况:

动脉样硬化是由动脉壁中未解决的脂质炎症驱动的.
巨细胞功能障碍,包括迁移受损和细胞分裂,加剧炎症和斑块生长.
网林-1信号传递,特别是通过其受体Unc5b,促进巨细胞的存活和保留在动脉样硬化斑块中.

研究的目的:

研究删除巨细胞中的Unc5b的治疗潜力,用于治疗晚期动脉样硬化.
了解骨髓细胞特异性Unc5b删除对斑块负担,复杂性和免疫细胞动态的影响.

主要方法:

产生了条件淘汰赛小鼠 (Unc5bfl/flCx3cr1creERT2/WT) 用于在单细胞/巨细胞 (∆Unc5bMØ) 中的Unc5b进行他莫西芬诱导的删除.
通过PCSK9过度表达和西方饮食诱导的先进动脉样硬化,其次是Unc5b删除和高胆固醇血症的正常化.
分析了动脉硬性斑块负担,复杂性,巨细胞含量,细胞和T细胞种群.

主要成果:

骨髓细胞Unc5b的删除减少了动脉样硬化斑块负担40%和斑块复杂性.
由于单细胞的招募和保留减少,斑块巨细胞含量减少了50%.
在体内和体外,Unc5b 缺乏症增强了巨细胞的效细胞化,减少了死亡和亡的区域.
在删除Unc5b时,Atheroprotective T细胞群 (T调控,Th2) 增加.

结论:

髓状细胞中的Unc5b是晚期动脉样硬化炎症炎症和保留的一个关键驱动因素.
向Unc5b代表了一种有前途的治疗策略,以促进斑块回归和炎症的解决.
条件删除Unc5b会在动脉样硬化斑块内诱导免疫细胞的亲溶性重组.

关键词:

这就是Treg Treg.动脉样硬化动脉样硬化有效细胞细胞化.这是一种炎症炎症炎症炎症.这是一个回归回归的回归.

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