出生前暴露于种族灭绝加速了卢旺达年轻成年人的第三和第四代时钟的表观遗传衰老
Glorieuse Uwizeye1, Luisa M Rivera2, Hannah G Stolrow3
1Arthur Labatt Family School of Nursing, Western University, London, Canada. guwizeye@uwo.ca.
Communications medicine
|August 9, 2025
概括
产前暴露于种族灭绝相关的创伤,包括强奸,与加速表观遗传衰老有关. 这种分子衰老指标在种族灭绝强奸期间怀孕的个体中最明显,这表明创伤影响生物调节.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 创伤研究 创伤研究
- 分子生物学分子生物学
背景情况:
- 产前暴露于与种族灭绝有关的创伤与增加的发病率有关.
- 产前种族灭绝暴露和强奸对DNA甲基化和生物调节的影响尚不清楚.
- 表观遗传衰老作为生物衰老的分子指标.
研究的目的:
- 调查产前暴露于种族灭绝相关创伤 (包括通过强奸受孕) 和加速表观遗传衰老之间的关联.
- 评估产前创伤是否影响生物调节,特别是DNA甲基化模式.
主要方法:
- 在1994年卢旺达种族灭绝期间怀孕的个体的横截面研究.
- 通过使用多个表观遗传时钟 (Horvath,Hannum,PhenoAge,GrimAge,DunedinPace,YingDamAge,YingAdaptAge) 评估了年龄加速.
- 对不良童年经历 (ACE) 进行控制;包括46名女性和45名男性,以及在种族灭绝期间不居住在卢旺达的卢旺达血统的控制.
主要成果:
- 在第一代或第二代表观遗传时钟中没有发现显著的年龄加速差异.
- 年龄加速与第三代和第四代时钟的产前极端压力有关,特别是在种族灭绝强奸概念组.
- 童年不良经历 (ACE) 强化了丹时代时钟所观察到的加速效应.
结论:
- 产前创伤暴露与表观遗传衰老加速有关.
- 第三代和第四代表观遗传钟在捕捉产前创伤和表观遗传衰老之间的关系方面可能更有效.
- 研究结果强调了种族灭绝相关创伤对生物调节的长期分子影响.
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