Circadian regulation of the Drosophila astrocyte transcriptome.

Circadian regulation of the Drosophila astrocyte transcriptome.
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果蝇星形胶质细胞转录组的昼夜节律调节。

DOI:
10.1371/journal.pgen.1009790
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发表时间:
2021-09
期刊:
影响因子:
4.5
通讯作者:
Jackson FR
Jackson FR
中科院分区:
生物学2区
文献类型:
--
作者:
You S;Yu AM;Roberts MA;Joseph IJ;Jackson FR

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最近的研究表明,星形胶质细胞与脑神经元合作,介导许多节律性过程的昼夜节律控制,包括运动活动和睡眠。转录谱研究已经描述了大脑的整体节奏景观,但很少有采用的方法,揭示异质性,细胞类型的特定节奏的大脑。利用果蝇核糖体结合RNA的细胞特异性分离,我们构建了第一个星形胶质细胞的昼夜节律“translatome”。该分析在星形胶质细胞中鉴定了293个“循环基因”,其中大部分与哺乳动物同源。随后的行为遗传筛选确定了一些基因,其表达是正常睡眠行为所需的星形胶质细胞。特别是,我们发现,某些已知调节苍蝇先天免疫反应的基因也是正常睡眠模式所必需的。
Recent studies have demonstrated that astrocytes cooperate with neurons of the brain to mediate circadian control of many rhythmic processes including locomotor activity and sleep. Transcriptional profiling studies have described the overall rhythmic landscape of the brain, but few have employed approaches that reveal heterogeneous, cell-type specific rhythms of the brain. Using cell-specific isolation of ribosome-bound RNAs in Drosophila, we constructed the first circadian “translatome” for astrocytes. This analysis identified 293 “cycling genes” in astrocytes, most with mammalian orthologs. A subsequent behavioral genetic screen identified a number of genes whose expression is required in astrocytes for normal sleep behavior. In particular, we show that certain genes known to regulate fly innate immune responses are also required for normal sleep patterns.
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