由共生细菌产生的N-甘氨酸增强了GLP-1的分泌,作为GPCR配体
Anna Drzazga1, Przemysław Bernat2, Adriana Nowak3
1Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego Street 2/22, Lodz 90-537, Poland.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|October 3, 2024
概括
肠道细菌,特别是Bacteroides,产生N-化甘氨酸 (NAGlys),刺激GLP-1分泌. 这些分子作为脂质GPCRs的激动剂,影响碳水化合物代谢,突出饮食在肠道健康中的作用.
科学领域:
- 微生物组研究的研究.
- 代谢调节 代谢调节 代谢调节
- 胃肠病学 胃肠病学
背景情况:
- 肠道微生物群,特别是 Bacteroides spp.,对于营养消化和产生生物活性分子至关重要.
- 菌体的缺失与代谢障碍有关.
- 微生物代谢产物可以模仿G蛋白结合受体 (GPCRs) 的人类配体.
研究的目的:
- 为了研究由 Bacteroides spp. 生产的N-化甘氨酸 (NAGlys). 作为葡萄糖类-1 (GLP-1) 分泌的调节剂.
- 确定特定的NAGlys及其对GLP-1生产及其相关细胞信号传递的影响.
- 评估强大的NAGlys作为关键脂质GPCR参与碳水化合物代谢的配体的潜力.
主要方法:
- 在不同的营养中培养代表性的开始性 Bacteroides 菌株.
- 在后培养中NAGlys含量的分析.
- 评估GLUTag和NCI-H716细胞系中GLP-1产生的刺激作用.
- 测试纯NAGlys对于GLP-1刺激,细胞信号传递以及作为GPR40/FFAR1,GPR55,GPR119和GPR120/FFAR4.4的配体.
主要成果:
- 细菌类物种增强GLP-1的产生,其影响因菌株和营养素的可用性而异.
- 来自B. thetaiotaomicron和B. intestinalis的长链不和NAGlys (oleoyl和arachidonoyl glycines) 在刺激GLP-1分泌方面特别有效.
- 这些强大的NAGlys作为所有测试脂质GPCRs在GLP-1生产细胞中表达的激素.
结论:
- 细菌体衍生的NAGlys在调节GLP-1分泌和碳水化合物恒温中发挥着重要作用.
- 特定的NAGlys作为关键脂质GPCR的激动剂,将肠道微生物活动与代谢控制联系起来.
- 均衡的饮食对于为开始性细菌提供前体来产生有效的脂质GPCR激活剂至关重要.
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