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Role of Diacylglycerol Kinases in Glucose and Energy Homeostasis
Trends in Endocrinology & Metabolism ( IF 11.4 ) Pub Date : 2019-09-01 , DOI: 10.1016/j.tem.2019.06.003
Julie Massart 1 , Juleen R Zierath 2
Affiliation  

Diacylglycerol kinases (DGKs) catalyze a reaction that converts diacylglycerol (DAG) to phosphatidic acid (PA). DAG and PA act as intermediates of de novo lipid synthesis, cellular membrane constituents, and signaling molecules. DGK isoforms regulate a variety of intracellular processes by terminating DAG signaling and activating PA-mediated pathways. The ten DGK isoforms are unique, not only structurally, but also in tissue-specific expression profiles, subcellular localization, regulatory mechanisms, and DAG preferences, suggesting isoform-specific functions. DAG accumulation has been associated with insulin resistance; however, this concept is challenged by opposing roles of DGK isoforms in the development of type 2 diabetes and obesity despite elevated DAG levels. This review focuses on the tissue- and isoform-specific role of DGK in glucose and energy homeostasis.

中文翻译:

二酰基甘油激酶在葡萄糖和能量稳态中的作用

二酰基甘油激酶 (DGK) 催化将二酰基甘油 (DAG) 转化为磷脂酸 (PA) 的反应。DAG 和 PA 充当从头脂质合成、细胞膜成分和信号分子的中间体。DGK 异构体通过终止 DAG 信号传导和激活 PA 介导的途径来调节多种细胞内过程。10 种 DGK 亚型是独一无二的,不仅在结构上,而且在组织特异性表达谱、亚细胞定位、调节机制和 DAG 偏好方面都是独一无二的,表明具有亚型特异性功能。DAG 积累与胰岛素抵抗有关;然而,尽管 DAG 水平升高,但 DGK 亚型在 2 型糖尿病和肥胖的发展中的相反作用对这一概念提出了挑战。
更新日期:2019-09-01
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