下丘脑 AMP 激活蛋白激酶作为全身能量传感器和调节剂。

Hypothalamic AMP-Activated Protein Kinase as a Whole-Body Energy Sensor and Regulator.

机构信息

Division of Endocrinology and Metabolism, Department of Internal Medicine, Diabetes Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea.

出版信息

Endocrinol Metab (Seoul). 2024 Feb;39(1):1-11. doi: 10.3803/EnM.2024.1922. Epub 2024 Feb 14.

Abstract

5´-Adenosine monophosphate (AMP)-activated protein kinase (AMPK), a cellular energy sensor, is an essential enzyme that helps cells maintain stable energy levels during metabolic stress. The hypothalamus is pivotal in regulating energy balance within the body. Certain neurons in the hypothalamus are sensitive to fluctuations in food availability and energy stores, triggering adaptive responses to preserve systemic energy equilibrium. AMPK, expressed in these hypothalamic neurons, is instrumental in these regulatory processes. Hypothalamic AMPK activity is modulated by key metabolic hormones. Anorexigenic hormones, including leptin, insulin, and glucagon-like peptide 1, suppress hypothalamic AMPK activity, whereas the hunger hormone ghrelin activates it. These hormonal influences on hypothalamic AMPK activity are central to their roles in controlling food consumption and energy expenditure. Additionally, hypothalamic AMPK activity responds to variations in glucose concentrations. It becomes active during hypoglycemia but is deactivated when glucose is introduced directly into the hypothalamus. These shifts in AMPK activity within hypothalamic neurons are critical for maintaining glucose balance. Considering the vital function of hypothalamic AMPK in the regulation of overall energy and glucose balance, developing chemical agents that target the hypothalamus to modulate AMPK activity presents a promising therapeutic approach for metabolic conditions such as obesity and type 2 diabetes mellitus.

摘要

5´-一磷酸腺苷(AMP)激活的蛋白激酶(AMPK)是一种细胞能量传感器,是一种重要的酶,有助于细胞在代谢应激时维持稳定的能量水平。下丘脑在调节体内能量平衡方面起着关键作用。下丘脑的某些神经元对食物供应和能量储存的波动敏感,触发适应性反应以维持全身能量平衡。表达在这些下丘脑神经元中的 AMPK 在这些调节过程中起着重要作用。下丘脑 AMPK 的活性受关键代谢激素的调节。厌食激素,包括瘦素、胰岛素和胰高血糖素样肽 1,抑制下丘脑 AMPK 的活性,而饥饿激素胃饥饿素则激活它。这些激素对下丘脑 AMPK 活性的影响是其控制食物摄入和能量消耗的核心。此外,下丘脑 AMPK 活性对葡萄糖浓度的变化做出反应。它在低血糖时活跃,但当葡萄糖直接引入下丘脑时被失活。这些下丘脑神经元中 AMPK 活性的变化对于维持葡萄糖平衡至关重要。考虑到下丘脑 AMPK 在调节整体能量和葡萄糖平衡方面的重要功能,开发针对下丘脑的化学剂来调节 AMPK 活性为肥胖和 2 型糖尿病等代谢疾病提供了一种有前途的治疗方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bd3/10901667/9e9943a01da2/enm-2024-1922f1.jpg

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