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维生素K2在高脂肪饮食引起的肥胖的小鼠中重新编程了多器官转录格局
Xuanyang Wang1, Yuntao Zhang2, Lin Liu3
1Department of Nutrition and Food Hygiene, School of Public Health, Key Laboratory of Precision Nutrition and Health, Ministry of Education, Harbin Medical University, Heilongjiang 150081, China. liying_helen@163.com.
Food & function
|July 11, 2025
概括
维生素K2 (VK2) 补充剂在肥胖小鼠的多个器官中挽救了基因表达. 这种营养干预恢复了由高脂肪饮食影响的特定组织功能和分子通路.
科学领域:
- 营养科学和分子生物学.
- 肥胖研究的研究.
- 基因组学和转录基因组学
背景情况:
- 肥胖与代谢障碍有关,维生素K2 (VK2) 在减轻这些影响中的作用正在研究中.
- 在肥胖期间VK2影响各种组织的精确分子机制仍然不完全理解.
- 了解VK2对多器官系统的影响对于开发有效的营养干预措施至关重要.
研究的目的:
- 为了研究VK2在饮食诱导肥胖的小鼠模型中的多种组织中对基因表达的救援效应.
- 为了确定受VK2干预影响的特定组织分子通路和基因表达模式.
- 分析受VK2.2影响的组织间通信和免疫反应途径的变化.
主要方法:
- 使用高脂肪饮食小鼠模型与menaquinone-7 (MK-7) 或车辆干预.
- 在大脑,结肠,肌肉,心脏,脏和肝脏组织上执行RNA测序,以生成多器官转录资料.
- 识别差异表达基因 (DEGs) 和分析救援基因效应和组织-组织通信网络.
主要成果:
- 补充VK2改善了肥胖小鼠的生化特征,并挽救了超过10%的异常表达基因,其中大多数完全恢复.
- 在大脑和脏路径中观察到显著的VK2-介导的救援效应,包括自,神经退行,能量代谢和免疫反应.
- 在所有分析的器官中,VK2恢复了组织特异性功能,影响了从大脑中神经信号传递到肌肉收缩的途径.
结论:
- 维生素K2 (VK2) 在饮食诱导的肥胖小鼠中显著挽救了多器官转录组,恢复了组织特异性通路.
- VK2干预使免疫通路中的连接体受体信号正常化,并促进更健康的组织-组织信号网络.
- 这些发现为VK2作为对抗肥胖相关代谢障碍的营养策略的潜力提供了分子洞察力.
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