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纤维素ARL13B可以预防小鼠肥胖

Tiffany T Terry¹, Eduardo D Gigante^1,2,3, Coralie M Alexandre⁴

¹Department of Human Genetics, Emory University School of Medicine, 615 Michael Street, Suite 301, Atlanta, GA 30322, USA.

bioRxiv : the preprint server for biology

|August 14, 2023

概括

在乳毛中发现的ARL13B蛋白调节身体重量和能量恒温. 在小鼠中失去状ARL13B会导致肥胖和代谢问题,独立于其GEF活性.

科学领域:

细胞生物学细胞生物学
代谢研究研究代谢研究
遗传学是一个遗传学.

背景情况:

乳毛是重要的细胞结构,参与沟通和平衡.
ARL13B是一种状GTPase,对各种生物过程至关重要.
乳毛和ARL13B的失调与代谢障碍有关.

研究的目的:

研究ARL13B在能量恒温和体重调节中的作用.
确定ARL13B的关氨酸核酸交换因子 (GEF) 活性是否对其代谢功能至关重要.
阐明ARL13B在控制新陈代谢过程中的细胞特异性功能.

主要方法:

生产基因工程小鼠模型,具有改变ARL13B局部化和GEF活性 (ARL13B^V358A和ARL13B^R79Q).
在小鼠模型中测量体重,食物摄入量和血糖水平.
分析ARL13B在神经元和胰腺细胞的乳毛中的定位.

主要成果:

缺少状ARL13B (ARL13B^V358A) 的小鼠表现出多,肥胖和代谢缺陷.
发现ARL13B在特定的大脑区域和胰腺细胞的乳头上局部化,但在ARL13B^V358A模型中被排除在外.
具有GEF活性受损的小鼠 (ARL13B^R79Q) 没有显著的体重变化,表明GEF独立功能.

结论:

ARL13B在调节体重和能量平衡方面发挥着关键的状腺依赖作用.
在代谢控制中ARL13B的功能独立于其对ARL3.3的GEF活性.
准状ARL13B局部化为代谢障碍干预提供了一个潜在的途径.

关键词:

在ARL13B中.西里亚西里亚是什么意思能量的恒温是能量恒温.过的情况过的情况肥胖肥胖肥胖肥胖肥胖肥胖肥胖肥胖

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