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通过Ces1d介导的脂质信号传递在免疫代谢中的巨细胞的功能调节

Long J Shao¹, Fathima Elizondo¹, Feng Gao²

¹Center for Metabolic and Degenerative Diseases, The Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, University of Texas Health Science Center at Houston, Houston, TX, USA.

Molecular metabolism

|May 11, 2025

概括

脂酶Ces1d对于巨细胞中的脂质稳定至关重要. 在肥胖中失去Ces1d会导致脂质失调,促进炎症和恶化小鼠的代谢障碍.

科学领域:

免疫学免疫学免疫学
代谢障碍代谢障碍代谢障碍
脂质代谢脂质代谢是一种

背景情况:

脂肪组织中巨细胞的积累是肥胖的一个标志.
在肥胖中驱动巨细胞炎症的脂质信号传递机制尚未完全理解.
一种非传统的脂酶Ces1d在巨细胞脂质代谢和炎症中的作用需要研究.

研究的目的:

研究Ces1d在肥胖期间调节巨细胞炎症和脂质平衡中的作用.
阐明Ces1d缺乏对巨细胞功能和代谢健康的影响.

主要方法:

使用了特定于骨髓细胞的Ces1d淘汰赛小鼠模型 (LysM-Cre-Ces1d,KO).
在体外评估骨髓衍生巨细胞 (BMDMs) 的迁移,极化和激活.
在WT和KO小鼠中使用高脂肪饮食 (HFD) 诱导肥胖,随后进行代谢表征和组织分析.

主要成果:

巨细胞中Ces1d缺乏导致脂肪液滴的扩大和三糖醇 (TAG) 和二糖醇 (DAG) 的积累.
失去了Ces1d导致脂质信号受损,促进亲炎性M1类巨细胞的偏振和激活.
缺少Ces1d会加剧肥胖引起的代谢障碍,包括脂肪肝,脂肪组织炎症和葡萄糖耐受性受损,同时增加CD3+CD8+T细胞透.

结论:

Ces1d对于保持巨细胞内的脂质稳态至关重要.
缺少Ces1d会破坏巨细胞中的脂质代谢,导致免疫细胞失调,并导致与肥胖相关的代谢疾病.

关键词:

这些都是CES1d.免疫代谢过程中的免疫代谢.炎症炎症是一种炎症.脂质信号传递是什么巨细胞是一个巨细胞.

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