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在小鼠中,C/EBPα对于腺但不是内白脂肪组织的形成至关重要

Krista Y Hu¹, Yu-Lin Ma¹, Esme A Dodge¹

¹Cardiometabolic Genomics Program, Division of Cardiology, Department of Medicine, Columbia University, New York, New York, USA.

Obesity (Silver Spring, Md.)

|February 11, 2026

概括

基因C/EBPα对于淋巴体白脂肪组织 (WAT) 的发展至关重要,但不是 inguinal WAT. Cebpa_ASKO小鼠显示WAT扩张和功能受损,影响代谢健康.

科学领域:

代谢性疾病研究研究
脂肪组织生物学脂肪组织生物学
遗传学和基因组学遗传学和基因组学

背景情况:

白色脂肪组织 (WAT) 的分布与肥胖并发症有关.
转录因子C/EBPα调节脂肪生成,但其在脂肪储存分布中的作用尚不清楚.
在CEBPA附近的单核酸多态 (SNP) 与腰部至部的比率相关.

研究的目的:

研究C/EBPα在调节脂肪组织分布和功能的作用.
为了确定C/EBPα是否对于特定的WAT仓库至关重要.

主要方法:

通过交叉Cebpa合小鼠与AdipoQ-Cre小鼠生成脂细胞特异的C/EBPα淘汰赛小鼠 (Cebpa_ASKO).
在标准饮食和高脂肪饮食 (HFD) 养后,表型化小鼠.
利用转录学和功能研究来评估iWAT功能障碍.

主要成果:

Cebpa_ASKO小鼠几乎完全缺少淋巴腺WAT (gWAT),但保留了 inguinal WAT (iWAT).
尽管在Cebpa_ASKO小鼠中发展,但iWAT的脂肪细胞较少,较大,并且未能在HFD下扩展.
Cebpa_ASKO小鼠表现出脂肪负载的棕色脂肪组织 (BAT),肝脏甘油三酸的增加,血胆固醇的升高,加剧了HFD.

结论:

在WAT开发中,C/EBPα起着关键的,仓库特定的作用,对于gWAT是必不可少的,但不是iWAT.
脂肪细胞特异性C/EBPα缺乏导致功能障碍的iWAT和全身代谢障碍.
这些发现揭示了新的组织间代谢关系,并建议C/EBPα作为内脏脂肪的潜在治疗点.

关键词:

在CEBPA中,CEBPA是CEBPA的成员.在GWAS中,GWAS就是GWAS.发展WAT的发展.转录因子的转录因子这是内脏脂肪.

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