由父母的微生物组对后代行为的胎儿编程,以及海马内DNA甲基化和基因表达
Kevin L Gustafson1, Susheel Bhanu Busi2, Zachary L McAdams1
1Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri, Columbia, MO, 65201, USA.
bioRxiv : the preprint server for biology
|November 1, 2024
概括
母亲的肠道微生物组显著影响后代的神经发育,影响行为和中枢神经系统基因表达. 这些影响是由特定的微生物和代谢因素介导的,这表明了强烈的代际联系.
科学领域:
- 微生物学 微生物学
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
背景情况:
- 肠道微生物群影响中枢神经系统 (CNS) 功能和宿主行为.
- 流行病学数据表明,母亲对后代神经发育的微生物组影响,但缺乏直接的实验证据.
- 关联母亲微生物组与后代神经发育的机制在很大程度上是未知的.
研究的目的:
- 调查母亲微生物组对后代表型的支配影响.
- 确定母亲微生物组影响后代神经发育和中枢神经系统基因表达的机制.
- 探索母体微生物组对后代行为和生理学的代际影响.
主要方法:
- 交叉培养实验以区分母与代孕母的影响.
- 河马DNA的全基因组甲基化分析.
- 后代海马的单细胞转录分析.
- 分析母亲微生物组的组成和功能 (例如,胆酸代谢).
主要成果:
- 母亲的微生物组强烈影响后代与焦虑相关的行为,活动和体重.
- 后代的表型与母亲的微生物组特征有关,例如胆盐酸酶活性和胆酸概况.
- 河马DNA甲基化和后代的基因表达显示与母亲的形状保持着差异,包括与胆汁酸运输和神经相关的基因.
结论:
- 母亲的肠道微生物组对后代的神经发育和行为产生主要影响.
- 特定的微生物和代谢因素调解了母体微生物群对后代中枢神经系统的影响.
- 数据为后代中枢神经系统中由母体微生物组驱动的表观遗传和转录基因变化提供了原则证明.
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