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端粒长度,表观遗传年龄加速和美国成年人群的死亡风险:一种附加贝叶斯网络分析
May A Beydoun1, Nicole Noren Hooten1, Nigus G Asefa1
1Laboratory of Epidemiology and Population Sciences, National Institute on Aging, Baltimore, Maryland, USA.
Aging cell
|July 7, 2025
概括
像GrimAgeEAA这样的DNA甲基化钟,比端粒长度更好地预测死亡率. 这些表观遗传衰老标志物揭示了衰老和死亡风险的种族和性别差异.
科学领域:
- 生物遗传学 生物遗传学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 人口健康 人口健康
背景情况:
- 端粒长度和DNA甲基化 (DNAm) 时钟已成为生物衰老的生物标志物.
- 这些衰老标志物与死亡风险增加有关.
- 了解老龄化的人口差异对于公共卫生至关重要.
研究的目的:
- 研究DNAm时钟,端粒长度和死亡风险之间的关联.
- 用先进的统计模型探索生物衰老中的种族和性别差异.
- 为了比较DNAm时钟的预测能力与死亡率的端粒长度.
主要方法:
- 分析了来自美国三大群体 (NHANES,HRS,HANDLS) 的数据.
- 添加贝叶斯网络 (ABN) 和通用结构方程模型 (GSEM) 的应用.
- 利用相关性矩阵和考克斯模型来评估死亡率预测.
主要成果:
- 表观遗传时钟 (GrimAgeEAA,HannumAgeEAA,DunedinPoAM/PACE) 是比端粒长度更强大的死亡率预测因素.
- 在ABN中,GrimAgeEAA被确定为关键预测因子,与整个队列的死亡率有关.
- 非西班牙裔黑人成年人通过DunedinPoAM显示加速衰老,调解更高的死亡率;西班牙裔成年人与PhenoAgeEAA有独特的关联.
结论:
- 在预测死亡率方面,DNA甲基化钟,特别是GrimAgeEAA,显著超过端粒长度.
- 第二代表观遗传衰老标志物提供了对人口老龄化和死亡率差异的见解.
- ABN有效地揭示了衰老生物标志物,性别,种族和死亡风险之间的复杂相互关系.
关键词:
添加的贝叶斯网络 添加的贝叶斯网络生物衰老 生物衰老遗传表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表观表死亡率 死亡率端粒的长度 端粒的长度相关概念视频
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