在神经发育障碍中,经验依赖的帕瓦尔胺抑制神经元可塑性的亲认知恢复
Yu-Tzu Shih1,2,2,3, Jason Bondoc Alipio1,2,2,3, Zin-Juan Klaft4
1Center for Regenerative Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA.
Research square
|January 29, 2025
概括
在海马抑制神经元中,homeobox基因Meis2调节经验依赖的可塑性,这对记忆形成至关重要. 在成年期恢复Meis2功能,可逆转小鼠神经发育障碍缺陷.
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
- 遗传学 遗传学 是一个
背景情况:
- 海马通过激发性细胞组合编码记忆,快速升的帕瓦胺表达抑制神经元 (PV INs) 控制时间.
- 经验依赖的PV IN可塑性细化神经回路,其早期生命障碍与自闭症和等神经发育障碍 (NDD) 有关.
研究的目的:
- 为了确定成年海马体中经验依赖PV IN可塑性的转录调节者.
- 调查是否针对这些监管者可以扭转与NDD相关的认知和网络缺陷.
主要方法:
- 一个屏幕确定了Meis2作为经验依赖的PV IN可塑性基因 (XPGs) 在牙状回形 (DG) -CA3 / CA2电路中的调节者.
- 在NDD风险的小鼠模型中,病毒介导的Meis2上调的救援.
主要成果:
- Meis2调节了成年DG-CA3/CA2 PV INs的可塑性.
- 许多上调的XPG与NDD (ASD,,精神分裂症) 有关.
- 成年后的Meis2救援恢复了PV IN可塑性,空间/社会记忆,并抑制了NDD小鼠的网络过激和发作.
结论:
- 经验依赖的PV IN可塑性是NDD风险基因的融合机制.
- 在成年期恢复这种可塑性可以扭转神经电路,网络刺激性和认知方面的发育缺陷.
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