文章基本信息

标题：Circadian rhythms in Per1, PER2 and Ca2+ of a solitary SCN neuron cultured on a microisland
本地全文：下载
作者：Yoshihiro Hirata ; Ryosuke Enoki ; Kaori Kuribayashi-Shigetomi 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2019
卷号：9
期号：1
页码：1-12
DOI：10.1038/s41598-019-54654-5
出版社：Springer Nature
摘要：Circadian rhythms in Per1, PER2 expression and intracellular Ca 2+ were measured from a solitary SCN neuron or glial cell which was physically isolated from other cells. Dispersed cells were cultured on a platform of microisland (100-200 μm in diameter) in a culture dish. Significant circadian rhythms were detected in 57.1% for Per1 and 70.0% for PER2 expression. When two neurons were located on the same island, the circadian rhythms showed desynchronization, indicating a lack of oscillatory coupling. Circadian rhythms were also detected in intracellular Ca 2+ of solitary SCN neurons. The ratio of circadian positive neurons was significantly larger without co-habitant of glial cells (84.4%) than with it (25.0%). A relatively large fraction of SCN neurons generates the intrinsic circadian oscillation without neural or humoral networks. In addition, glial cells seem to interrupt the expression of the circadian rhythmicity of intracellular Ca 2+ under these conditions.