肠道微生物群和表观遗传年龄加速:双向的门德尔随机化研究
Han Xu1,2, Ouyang Li1,2, Dayoung Kim1,2
1Department of Gerontology, Huadong Hospital Affiliated to Fudan University, Shanghai, China.
Aging clinical and experimental research
|November 29, 2024
概括
这项研究使用了门德尔的随机化来研究肠道微生物群和表观遗传衰老加速 (EAA) 之间的遗传联系. 特定的肠道细菌显示了对EAA的潜在因果作用,为预防衰老策略提供了洞察力.
科学领域:
- 遗传学 遗传学 是一个
- 微生物学 微生物学
- 衰老研究研究 衰老研究
背景情况:
- 人们已经认识到肠道微生物群在衰老中的作用,但其与表观遗传衰老加速 (EAA) 相关的遗传基础仍未得到充分探索.
- 研究肠道微生物组成和生物衰老标志物之间的遗传联系对于理解衰老机制至关重要.
研究的目的:
- 使用孟德尔随机化 (MR) 探索肠道微生物群和表观遗传衰老加速 (EAA) 之间的关联.
- 识别可能因果影响EAA的特定肠道细菌.
主要方法:
- 利用了来自MiBioGen联盟和荷兰微生物组项目的肠道微生物群的遗传仪器.
- 使用四种MR方法 (IVW,MR-Egger,WMA,加权模式) 来评估肠道微生物群和EAA之间的因果关系.
- 进行了敏感性分析,以解决异质性和水平性.
主要成果:
- 确定了12种细菌种群和EAA之间的潜在因果关联 (P < 0.05).
- 在 *Holdemania_unclassified* 和 GrimAge 加速 (OR: 1.31) 之间发现了积极的关联.
- 对*Acidaminococcaceae*家族 (OR:0.64) 和*Clostridiaceae1*家族 (OR:0.69) 观察到的负相关性与GrimAge加速.
- 反向MR揭示了EAA和6种细菌种群之间的关联,包括Phenoage加速和Turicibacter* (OR:0.928) 属之间的反向关联.
结论:
- 这项研究表明,特定肠道微生物群对表观遗传衰老加速的潜在因果作用.
- 这些发现可能为专注于调节肠道微生物群的衰老预防策略提供新的目标.
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