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在脂肪生成过程中通过PI3K-AKT信号通路进行T-卡德林细的增殖-分化

Polina Klimovich^1,2, Ilya Brodsky¹, Valentina Dzreyan¹

¹Faculty of Medicine, Lomonosov Moscow State University, 119991 Moscow, Russia.

International journal of molecular sciences

|October 16, 2025

概括

T-cadherin (CDH13) 负面调节脂肪生成,控制脂肪细胞增殖和分化之间的平衡. 它的调节会影响脂质积累和胰岛素反应,这与代谢疾病有关.

科学领域:

细胞生物学细胞生物学
代谢调节代谢调节代谢调节
脂肪组织生物学脂肪组织生物学

背景情况:

脂肪组织的更新涉及干细胞/原始细胞的增殖和脂肪细胞的分化.
T-cadherin (CDH13) 在脂肪组织中表达,并与高分子量阿迪波涅丁结合.
对于T-cadherin在脂肪生成中的作用尚不清楚.

研究的目的:

使用3T3-L1前脂质细胞模型研究T-cadherin在脂肪细胞分化中的功能.
在分化过程中分析T-cadherin表达动态.
评估T-cadherin操纵对脂肪生成和相关信号通路的影响.

主要方法:

在脂肪生成研究中使用3T3-L1前脂质细胞模型.
进行了T-cadherin过度表达和淘汰实验.
分析了基因表达,脂质积累和关键信号通路 (ERK,PI3K-AKT,AMPK,mTOR).

主要成果:

过度表达T-cadherin维持了繁殖,不分化的状态,延迟了分化并抑制了脂质积累.
降低T-cadherin加速了脂肪细胞的分化,增强了脂质的积累.
降低T-cadherin的调节通过PI3K-AKT通路激活增加了胰岛素反应.

结论:

T-cadherin 作为脂肪生成的负调节剂.
通过平衡原生体扩张和分化,T-cadherin调节脂肪组织的可塑性.
这些发现表明T-cadherin与肥胖和代谢疾病的相关性.

关键词:

3T3-L1 的时间.在CDH13中,CDH13是最常见的.这就是T-cadherin.脂质生成 (adipogenesis) 是一种没有任何的Adiponectin.胰岛素的信号传递方式

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