特定的运动模式产生一个表观遗传分子记忆窗口,驱动长期记忆的形成,并确定ACVR1C作为小鼠记忆的双向调节器
Ashley A Keiser1,2,3, Tri N Dong1,2,3, Enikö A Kramár1,2,3
1Department of Neurobiology and Behavior, University of California Irvine, Irvine, CA, 92697, USA.
Nature communications
|May 7, 2024
概括
特定的运动模式可以通过创建分子记忆窗口来增强小鼠的长期记忆形成. 这涉及调节Acvr1c基因,这对突触可塑性和认知功能至关重要.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 运动生理学 运动生理学
背景情况:
- 众所周知,运动对所有年龄段的认知功能都有好处.
- 运动增强记忆力的确切机制,特别是在不理想的训练条件下,仍然不完全理解.
研究的目的:
- 研究特定的运动模式如何将低于值的训练转化为长期记忆.
- 为了确定分子因素,特别是基因,参与运动介导的记忆增强.
- 探索Acvr1c在突触可塑性和认知功能中的作用.
主要方法:
- 在小鼠的背部海马体的RNA测序 (RNA-seq).
- 对与运动诱导的记忆形成相关的基因表达变化的分析.
- 对Acvr1c促进体的表观遗传分析.
- 突触可塑性的电生理学评估.
- 关于小鼠学习和记忆的行为研究.
主要成果:
- 发现特定的运动模式能够从低于值的训练中形成长期记忆.
- RNA-seq确定了TGF-β家族中的基因Acvr1c,与运动介导的记忆益相关.
- 运动减轻了Acvr1c促进体的表观遗传抑制,促进了其表达.
- ACVR1C被证明可以双向调节突触可塑性和长期记忆.
- 在老年大脑和5xFAD小鼠模型中,Acvr1c的表达减少.
结论:
- 存在一个分子记忆窗口,运动可以促进长期记忆.
- 在调解运动的认知益处方面,Acvr1c起着至关重要的作用.
- 增强Acvr1c表达可能提供一种治疗策略,用于对抗与年龄相关的和与疾病相关的认知衰退.
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