双胞胎对分析揭示了DNA甲基化,线粒体DNA数量和肥胖之间的联系
Aino Heikkinen1,2, Vivienne F C Esser3, Seung Hyuk T Lee4
1Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland. aino.heikkinen@helsinki.fi.
Nature communications
|May 12, 2025
概括
线粒体DNA数量影响SH3BP4基因甲基化和脂肪组织中的表达,可能影响肥胖. 这项研究将线粒体DNA水平与肥胖特征和SH3BP4甲基化联系起来,表明存在因果关系.
科学领域:
- 遗传学 遗传学 是一个
- 代谢过程中的代谢.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 肥胖与改变的线粒体代谢和中断的核-线粒体通信有关.
- 基因甲基化可能在这种相互作用中发挥作用,影响基因表达和细胞功能.
研究的目的:
- 调查线粒体DNA数量,DNA甲基化和与肥胖有关的特征之间的关联.
- 探索SH3BP4基因在肥胖和线粒体功能方面所起的作用.
主要方法:
- 利用了芬兰双胞胎队列的数据,包括肥胖度,线粒体DNA数量和脂肪和肌肉组织中的DNA甲基化.
- 采用统计分析来确定关联和因果关系,包括在独立的双胞胎队列中进行验证.
- 应用ICE FALCON用于因果推理分析.
主要成果:
- 确定了SH3BP4 CpG甲基化与脂肪组织中的线粒体DNA数量之间的显著关联.
- 观察到SH3BP4甲基化与其基因表达之间的相关性,以及与14种与肥胖相关的特征的关联.
- 因果推断表明,线粒体DNA数量,胰岛素敏感性和体脂测量影响SH3BP4甲基化,线粒体DNA数量可能因果影响肥胖.
结论:
- 线粒体DNA数量会影响DNA甲基化和脂肪组织中SH3BP4基因的表达.
- 这些发现突出了潜在的分子机制,将线粒体功能障碍与肥胖联系起来.
- 该研究提供了关于线粒体遗传学,表观遗传学和代谢健康之间的复杂相互作用的见解.
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