单核酸多态性影响甜味剂的甜味受体激活:SWEET项目
Christine Belloir1, Mathilde Jeannin1, Adeline Karolkowski1
1Centre des Sciences du Goût et de l'Alimentation, The National Centre for Scientific Research (CNRS), National Institute of Agricultural Research (INRAE), Institut Agro, Université Bourgogne Europe, F-21000 Dijon, France.
Nutrients
|April 28, 2025
概括
在TAS1R2和TAS1R3基因的遗传变异似乎不会直接导致肥胖. 这项研究发现,这些甜味受体基因SNP与研究人口中的肥胖现象型之间没有直接联系.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 人体生理学 人体生理学
背景情况:
- 假设TAS1R2和TAS1R3基因中的单核酸多态 (SNP) 影响甜味感知和饮食习惯,可能增加肥胖风险.
- 这项研究调查了已知和新型人类TAS1R2/TAS1R3基因多形态对甜味受体活性的功能影响.
研究的目的:
- 评估12个TAS1R2-SNP和16个TAS1R3-SNP在体外对各种甜味剂的甜味受体反应的影响.
- 在肥胖人口中识别与减少或丧失TAS1R2/TAS1R3功能相关的新型SNP.
主要方法:
- 使用功能性细胞测试来评估已识别的TAS1R2/TAS1R3SNP对甜味受体信号传递的影响.
- 通过TaqMan方法对162名肥胖个体 (BMI 25-35 kg/m2) 的DNA进行了SNP基因定型,以发现新的功能变异.
主要成果:
- 虽然一些TAS1R2/TAS1R3SNP显示受体反应减少,但没有观察到与特定肥胖现型的直接关联.
- 预计七个SNP会显著损害甜味受体对甜味剂的反应.
结论:
- 该研究的体外检测结果不支持TAS1R2/TAS1R3基因多态化与肥胖之间的直接因果关系.
- 结果表明,除了TAS1R2和TAS1R3基因之外的因素可能决定了甜味感知和糖消费模式.
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