皮质otropin释放激素通过thalamic网状核调节NREM睡眠巩固
Loredana Cumpana1,2, Olivia Zanoletti1,2, Dinesh Kankanamge3
1Laboratory of Behavioral Genetics, Brain Mind Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
Nature communications
|August 19, 2025
概括
胸膜网状核 (TRN) 中的皮质otropin释放激素 (CRH) 通过调节神经元活动来影响睡眠. 这种CRH-CRHR1通路为治疗与压力相关的睡眠障碍提供了潜在的目标.
科学领域:
- 神经科学是一个神经科学.
- 睡眠科学 睡眠科学
- 神经内分泌学神经内分泌学
背景情况:
- 皮质otropin释放激素 (CRH) 是一个关键的压力调节神经系统功能.
- 乳头网状核 (TRN) 表达CRH受体1 (CRHR1),这表明它在TRN功能中的作用.
- CRH对TRN介导的睡眠调节的影响,特别是睡眠,以前是未知的.
研究的目的:
- 研究CRH在TRN中调节非快速眼动睡眠 (NREMS) 和睡眠活动中的作用.
- 探索CRH通过CRHR1影响TRN神经元刺激性的细胞机制.
- 确定TRN中CRH-CRHR1通路的向是否可以影响睡眠质量.
主要方法:
- 在小鼠中同时进行多睡眠摄影和光度测量以记录睡眠动态和神经元活动.
- 光遗传刺激来操纵睡眠期间TRN中的CRH释放.
- 对TRN神经元的ex-vivo电生理记录,以评估CRHR1激活效应.
- 在特定的TRN神经元群体中,CRHR1被淘汰 (表达对白蛋白).
主要成果:
- 在NREMS期间,TRN中的CRH释放振荡,与睡眠旋转活动相反相关.
- 调节TRN CRH释放改变了NREMS碎片化和微激发,影响了西格玛和三角形功率.
- 在TRN神经元中的CRHR1激活减少了它们对爆的倾向.
- 在TRN双蛋白神经元中,CRHR1的敲击取消了CRH对睡眠和神经元爆发的影响.
结论:
- 在TRN中通过CRHR1发出CRH信号,在调节NREMS和睡眠线圈动态方面发挥着重要作用.
- 在TRN中的CRHR1激活调节了thalamic兴奋性,影响睡眠结构.
- 在TRN中的CRH-CRHR1通路为与压力和焦虑相关的睡眠障碍提供了潜在的治疗点.
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