胃机械敏感通道Piezo1调节 ghrelin 的产生和食物摄入
Yawen Zhao1, Yang Liu1, Tian Tao1
1Department of Physiology, School of Medicine, Jinan University, Guangzhou, China.
Nature metabolism
|March 12, 2024
概括
机械信号可以调节饥饿感. 胃细胞中的PIEZO1感觉到伸展,控制着 ghrelin (饥饿激素) 的产生. 这一发现为肥胖治疗提供了一个新的目标.
科学领域:
- 胃肠病学 胃肠病学
- 细胞生物学 细胞生物学
- 身体生理学 身体生理学
背景情况:
- 格林是一种由胃X/A样细胞产生的饥饿激素,刺激食欲.
- 对于X/A样细胞对胃张张感应在调节林产生的作用还不完全理解.
研究的目的:
- 研究PIEZO1机械传感器在胃X/A样细胞中对调节 ghrelin 生产和食欲的作用.
- 探索PIEZO1作为治疗肥胖的治疗点的潜力.
主要方法:
- 在肥胖患者和对照患者的胃活检中分析PIEZO1表达,并在袖子胃切除术后进行分析.
- 产生和研究小鼠在X/A类细胞中具有特定的Piezo1损失.
- 在小鼠中,PIEZO1的药理激活和胃张张刺激.
- 对CaMKKII/CaMKIV-mTOR信号通路的研究.
主要成果:
- 在肥胖症中,PIEZO1的表达减少,在袖子胃切除术后增加.
- 在X/A样细胞中失去Piezo1会导致高林血,高,并增加小鼠对超重的易感性.
- 在小鼠中,PIEZO1激活抑制了 ghrelin 生产,减少了能量摄入,并促进了体重减轻.
- 这些影响涉及CaMKKII/CaMKIV-mTOR信号通路.
结论:
- 胃X/A样细胞中的PIEZO1作为一个关键的机制传感器,调节 ghrelin 生产和食欲.
- 准PIEZO1为控制肥胖提供了一个有前途的治疗策略.
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