有针对性的单细胞表达造型识别了睡眠和代谢状态的整合者
Meng-Fu Maxwell Shih1,2,3, Jiwei Zhang2, Elizabeth B Brown2
1Dept of Anesthesiology, Stony Brook School of Medicine, Stony Brook NY, 11794.
bioRxiv : the preprint server for biology
|October 10, 2024
概括
果在饥饿时抑制睡眠,依靠特定的神经元来信号饥饿. 这项研究确定了这些神经元中的关键基因,这些基因在饥饿期间调节睡眠和新陈代谢.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 代谢过程中的代谢.
背景情况:
- 动物根据环境线索调整睡眠,特别是代谢信号,如食物的可用性.
- 果 (Drosophila melanogaster) 在缺乏食物时会减少睡眠,这一过程由侧角Leucokinin (LHLK) 神经元介导.
研究的目的:
- 在饥饿期间调查LHLK神经元的转录变化.
- 确定参与调节单个神经元水平的睡眠代谢相互作用的新型基因.
主要方法:
- 从被养和饥饿的果中获得的LHLK神经元的单细胞测序 (Patch-seq和CEL-Seq).
- 差异基因表达分析以确定对饥饿反应的转录.
- 基因淘汰实验是为了验证已识别的基因的功能.
主要成果:
- 24个基因,包括12个上调和12个下调,在饥饿时在LHLK神经元中被差异地表达.
- 基因本体学分析揭示了抗微生物 (Attacins) 和其他细胞功能调节者的丰富.
- Knockdown 的特定基因,包括 E3 无处不在的酶 失眠, Sodh1, AttacinC 和 AttacinB,受损的饥饿诱导的睡眠抑制.
结论:
- 这项研究建立了一种剖析神经元对代谢状态反应的方法.
- 已识别的关键基因,如失眠,Sodh1,AttacinC和AttacinB,在果饥饿期间调节睡眠中起着至关重要的作用.
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