骨质细胞中的味觉受体1型3成员通过检测葡萄糖来调节骨质细胞生成
Anna Yoshimura1, Takuma Matsubara2, Nao Kodama2
1Division of Molecular Signaling and Biochemistry, Kyushu Dental University, Kitakyushu, Fukuoka, Japan; Division of Orofacial Functions and Orthodontics, Kyushu Dental University, Kitakyushu, Fukuoka, Japan.
The Journal of biological chemistry
|February 8, 2025
概括
味觉受体类型1成员3 (TAS1R3) 在骨质细胞中表达,检测葡萄糖. 这一发现揭示了TAS1R3在骨代谢和骨质细胞形成中的新作用,表明了治疗潜力.
科学领域:
- 骨生物学和新陈代谢
- 味觉受体的信号传递方式
- 细胞和分子生理学的细胞和分子生理学.
背景情况:
- 味觉系统的作用范围超出了口腔,口外各种器官都有味觉受体.
- 缺乏TAS1R3和高脂肪,高糖饮食的小鼠在食物摄入量没有变化的情况下表现出高骨质量,但机制尚不清楚.
- 具体表达TAS1R3的细胞类型及其在骨代谢中的功能尚不清楚.
研究的目的:
- 研究骨质细胞中TAS1R3的表达和功能,这些细胞负责骨再吸收.
- 阐明TAS1R3在调节骨质细胞形成和骨代谢中的作用.
- 探索TAS1R3在骨代谢疾病中的潜在治疗影响.
主要方法:
- 在骨质细胞分化过程中检查了Tas1r3表达.
- 在TAS1R3缺乏和TAS1R3过度表达的小鼠中分析了与骨质结晶发生相关的基因表达.
- 研究了TAS1R3同质化及其在葡萄糖检测和p38酸化中的功能.
主要成果:
- 在骨质细胞分化过程中诱导了Tas1r3表达,与Tas1r1或Tas1r2.2不同.
- 与骨质细胞生成相关的基因在TAS1R3缺乏的小鼠中被下调,在TAS1R3过度表达时被上调.
- TAS1R3形成了同位素,检测到葡萄糖,增强了p38酸化,并促进了骨质细胞形成.
结论:
- TAS1R3在骨质细胞中表达和功能,在骨质再吸收中发挥关键作用.
- TAS1R3的同质化调解了葡萄糖检测和骨质细胞生成,影响了骨代谢.
- TAS1R3代表了治疗骨代谢障碍的潜在治疗标.
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