青少年白质成熟 调解表观遗传关联与认知发展
Dawn Jensen1,2, Jiayu Chen1,3, Jessica A Turner4
1Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS): (Georgia State University, Georgia Institute of Technology, and Emory University), Atlanta, Georgia, USA.
Developmental neurobiology
|November 22, 2025
概括
青少年大脑发育涉及化增加,受特定基因DNA甲基化变化的影响. 这些表观遗传变化与白质的成熟和青春期认知能力的提高有关.
科学领域:
- 神经科学是一个神经科学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 发展生物学 发展生物学
背景情况:
- 青少年大脑成熟的特点是髓化增加 (分数异性变异 [FA]).
- 表观遗传驱动因素,特别是DNA甲基化 (DNAm),对于神经发育至关重要,但人们对其了解甚少.
- 以前的研究将特定CpG位点的DNAm变化与青少年的灰质成熟和认知增长联系起来.
研究的目的:
- 研究7个关键基因的DNAm变化与青少年大脑网络的FA变化之间的关系.
- 探索这些DNAm和FA变化如何与青少年的认知表现有关.
- 确定白质成熟是否介导表观遗传变化和认知发展之间的联系.
主要方法:
- 对正常发育的青少年 (9-14岁) 的长度研究.
- 在基因 (GRIN2D,GABRB3,KCNC1,SLC12A9,CHD5,STXBP5,NFASC) 中七个CpG位点的DNAm分析.
- 与分数异构 (FA) 网络和认知测试分数进行相关性和调解分析.
主要成果:
- 随着时间的推移,脱甲基化与成熟的半球间连接区域的FA增加网络有显著的相关性.
- 调解分析显示,这种网络链接在四个基因中减少了DNAm,从而提高了认知表现.
- 这些发现表明,与髓化和神经平衡相关的基因中的DNAm变化驱动白质成熟.
结论:
- 特定基因中的DNA甲基化变化与青春期白质成熟有关.
- 白质的成熟,由FA增加表明,调解DNAm对认知表现的影响.
- 表观遗传机制在青少年神经发育和认知增强中发挥着重要作用.
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