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描述格林在调节GLP-1中介功能的作用,并促进与酒精有关的肝病的发展

Sundararajan Mahalingam¹, Ramesh Bellamkonda¹, Kusum K Kharbanda²

¹Research Service, Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE, USA; Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie

|January 10, 2026

概括

酒精增加了 ghrelin,从而通过与其受体相互作用,损害了类似葡萄糖-1 (GLP-1) 的保护功能. 这种相互作用有助于酒精相关性肝病 (ALD) 的发展.

科学领域:

内分泌学在内分泌学.
肝病学肝病学是一种肝病学.
分子生物学分子生物学

背景情况:

长期饮酒会提高肠道激素葡萄糖类-1 (GLP-1) 和 ghrelin 的血清水平.
尽管GLP-1水平升高,但饮酒养的动物表现出胰岛素耐药性和肝脂代谢中断,这表明GLP-1功能受损.
增长激素分泌剂受体 (GHSR) 淘汰老鼠对与酒精相关的肝病 (ALD) 具有抗性,这表明 ghrelin 信号传递的作用.

研究的目的:

调查酒精诱导的格林-GHSR相互作用损害GLP-1介导功能的假设.
阐明在ALD病变发生过程中格林和GLP-1信号之间的相互作用背后的分子机制.

主要方法:

使用了体内模型 (野生型和GHSR-KO大鼠的慢性乙醇养) 和体内系统 (转移的肝细胞和细胞系).
向被养的老鼠注射格林,并采用了分子技术,包括受体转染和in-silico分子对接.
测量GLP-1和GLP-1受体 (GLP-1R) 水平,并评估受体相互作用.

主要成果:

慢性乙醇养增加了野生型大鼠的GLP-1和GLP-1R水平,但不是GHSR-KO大鼠.
发现格林促进了GHSR和GLP-1R的相互作用和二元化,从而降低了GLP-1的疗效.
在体分析中发现了特定的氨基酸残留物,它们调解了GHSR-GLP-1R相互作用.

结论:

酒精诱导的林通过GHSR-GLP-1R相互作用调节GLP-1功能.
格林和GLP-1信号通路之间的这种交叉对ALD发展起着至关重要的作用.
针对GHSR-GLP-1R相互作用,为ALD提供了一个潜在的治疗策略.

关键词:

与酒精相关的肝脏疾病 G蛋白结合受体的受体是什么格林林 (Ghrelin) 是一种激素.格林林受体 (GHSR) 类似葡萄糖素的-1 肠道激素肠道激素受体-受体相互作用

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