急性压力暴露对全基因组DNA甲基化影响
Melissa Miller1, Ciara McAfee1, Robin D Brown2
1Department of Psychology, University of Texas at Austin, 108 E Dean Keeton St, Austin, TX, 78712, USA.
Scientific reports
|July 4, 2025
概括
急性压力可以改变人类的DNA甲基化 (DNAm),影响像GATA3和COL4A1.1.这样的基因. 心理压力反应,而不是皮质醇,预测了这些表观遗传变化.
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.
- 神经科学是一个神经科学.
- 人体生理学 人体生理学
背景情况:
- DNA甲基化 (DNAm) 是一个关键的表观遗传机制.
- 虽然动物研究表明压力会影响DNAm,但人类数据有限.
- 了解DNAm在应对急性压力的可塑性至关重要.
研究的目的:
- 为了研究急性压力诱导的人类唾液DNA的DNAm变化.
- 探索急性压力对DNAm的性别特异性影响.
- 确定心理或荷尔蒙应激反应是否预测表观遗传变化.
主要方法:
- 使用了基于实验室的急性压力诱导协议.
- 在男性和女性参与者的唾液DNA中测量了DNA甲基化水平.
- 心理和皮质醇反应性被评估后压力.
主要成果:
- 急性压力诱导了唾液DNA中的高甲基化和低甲基化.
- 特定的基因 (GATA3,NINL,BACH2,PHACTR1,KRTAP19-3) 显示了与压力相关的DNAm变化.
- 在COL4A1基因中观察到性别特异性的DNAm变化.
- 心理压力反应预测了后压力DNAm,而皮质醇反应预测了表观遗传衰老.
结论:
- DNA甲基化是动态的,可以在人类急性心理压力的反应中发生变化.
- 有不同的途径将荷尔蒙和心理应激反应与表观遗传修饰联系起来.
- 这些发现强调了在表观遗传研究中考虑压力类型和性别的重要性.
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