对饮食脂肪酸摄入量进行表观基因组范围的关联研究
Julia Lange de Luna1,2,3, Aayah Nounu1,2, Sonja Neumeyer1,2
1Research Unit Molecular Epidemiology, Institute of Epidemiology, Helmholtz Zentrum Munich, German Research Center for Environmental Health, Ingolstädter Landstraße 1, 85764, Neuherberg, Germany.
Clinical epigenetics
|February 16, 2024
概括
饮食中的多不和脂肪酸 (PUFA) 摄入会影响DNA甲基化. 这项研究确定了与PUFA摄入相关的三个CpG位点,为其健康影响提供了新的见解.
科学领域:
- 营养表观遗传学
- 分子流行病学分子流行病学
背景情况:
- 饮食中的多不和脂肪酸 (PUFA) 影响健康,n-3 PUFA 具有潜在的保护作用,n-6 PUFA 与炎症有关.
- 导致PUFA影响的机制可能涉及DNA甲基化 (DNAm).
研究的目的:
- 研究PUFA摄入量对DNA甲基化模式的影响.
- 为了确定与人类队列中PUFA消费相关的特定差异甲基化位置 (DMP).
主要方法:
- 在KORA FF4 (N=1354) 和莱顿长寿研究 (LLS,N=448) 队列的全血中评估了DNA甲基化.
- 使用Illumina甲基化EPIC BeadChip和HumanMethylation450数组进行DNAm分析.
- 统计分析,包括元分析,确定了特定PUFA和DMP之间的关联.
主要成果:
- 在KORA研究中确定了两个DMP:与多可萨赫萨酸 (DHA) 相关的cg19937480 (PRDX1) 和与多可萨酸 (DPA) 相关的cg05041783 (MARK2).
- 分析结果显示,CG15951061 (CDCA7L) 与eicosapentaenoic acid (EPA) 的摄入量相关.
- 在元分析中证实了cg19937480与DHA的相关性.
结论:
- 三个CpG地点被发现与PUFA摄入有关.
- 将这些CpG位点与PUFA摄入量和健康结果联系起来的功能机制需要进一步研究.
- 这些发现突出了新的表观遗传点,以了解PUFA在健康和疾病中的作用.
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