Dual-Color Single-Cell Imaging of the Suprachiasmatic Nucleus Reveals a Circadian Role in Network Synchrony.

Dual-Color Single-Cell Imaging of the Suprachiasmatic Nucleus Reveals a Circadian Role in Network Synchrony.
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视交叉上核的双色单细胞成像揭示了网络同步的昼夜节律作用。

DOI:
10.1016/j.neuron.2020.07.012
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发表时间:
2020-10-14
期刊:
影响因子:
16.2
通讯作者:
Takahashi JS
Takahashi JS
中科院分区:
医学1区
文献类型:
--
作者:
Shan Y;Abel JH;Li Y;Izumo M;Cox KH;Jeong B;Yoo SH;Olson DP;Doyle FJ 3rd;Takahashi JS

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视交叉上核(SCN)作为一个主起搏器驱动昼夜节律的行为和生理。虽然SCN很小,但它由许多细胞类型组成,因此很难研究特定细胞的作用。在这里,我们已经开发了生物发光昼夜节律报告小鼠,是铬依赖性,允许基因定义的细胞群体的昼夜节律特性进行研究,在真实的时间。使用颜色转换PER 2::LUCIFERASE报告基因,在Cre重组后从红色PER 2::LUCIFERASE转换为绿色PER 2::LUCIFERASE,我们评估了SCN中两种主要肽能神经元的昼夜节律:AVP(精氨酸加压素)和VIP(血管活性肠多肽)。令人惊讶的是,我们发现,AVP神经元,而不是VIP神经元的昼夜节律功能,是必不可少的自主网络同步的SCN和昼夜节律的稳定性。
The suprachiasmatic nucleus (SCN) acts as a master pacemaker driving circadian behavior and physiology. Although the SCN is small, it is composed of many cell types, making it difficult to study the roles of particular cells. Here we have developed bioluminescent circadian reporter mice that are Cre-dependent, allowing the circadian properties of genetically-defined populations of cells to be studied in real time. Using a Color-Switch PER2::LUCIFERASE reporter that switches from red PER2::LUCIFERASE to green PER2::LUCIFERASE upon Cre recombination, we assessed circadian rhythms in two of the major classes of peptidergic neurons in the SCN: AVP (arginine vasopressin) and VIP (vasoactive intestinal polypeptide). Surprisingly, we find that circadian function in AVP neurons, not VIP neurons, is essential for autonomous network synchrony of the SCN and stability of circadian rhythmicity.
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