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棕色脂肪组织通过诱导 FGF21 对寒冷和肾上腺素刺激作出反应。

Brown adipose tissue responds to cold and adrenergic stimulation by induction of FGF21.

机构信息

Department of Internal Medicine, Division of Endocrinology, Medical School, University of Patras, Patras, Greece.

出版信息

Mol Med. 2011;17(7-8):736-40. doi: 10.2119/molmed.2011.00075. Epub 2011 Feb 25.

Abstract

Fibroblast growth factor-21 (FGF21) is a pleiotropic protein involved in glucose, lipid metabolism and energy homeostasis, with main tissues of expression being the liver and adipose tissue. Brown adipose tissue (BAT) is responsible for cold-induced thermogenesis in rodents. The role of FGF21 in BAT biology has not been investigated. In the present study, wild-type C57BL/6J mice as well as a brown adipocyte cell line were used to explore the potential role of cold exposure and β3-adrenergic stimulation in the expression of FGF21 in BAT. Our results demonstrate that short-term exposure to cold, as well as β3-adrenergic stimulation, causes a significant induction of FGF21 mRNA levels in BAT, without a concomitant increase in FGF21 plasma levels. This finding opens new routes for the potential use of pharmaceuticals that could induce FGF21 and, hence, activate BAT thermogenesis.

摘要

成纤维细胞生长因子 21(FGF21)是一种具有多种功能的蛋白质,参与葡萄糖、脂质代谢和能量稳态的调节,其主要表达组织为肝脏和脂肪组织。棕色脂肪组织(BAT)负责啮齿动物的冷诱导产热。FGF21 在 BAT 生物学中的作用尚未得到研究。在本研究中,使用野生型 C57BL/6J 小鼠和棕色脂肪细胞系来探索冷暴露和β3-肾上腺素能刺激对 BAT 中 FGF21 表达的潜在作用。我们的结果表明,短期暴露于寒冷以及β3-肾上腺素能刺激会导致 BAT 中 FGF21 mRNA 水平显著诱导,而 FGF21 血浆水平没有相应增加。这一发现为可能诱导 FGF21 并激活 BAT 产热的药物的潜在用途开辟了新的途径。

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