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Spatiotemporal single-cell analysis of gene expression in the mouse suprachiasmatic nucleus

ABSTRACT: Spatiotemporal single-cell analysis of gene expression in the mouse suprachiasmatic nucleus

PROVIDER: PRJNA548532 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9280653.fastq.gz	Fastqsanger.gz
	SRR9280654.fastq.gz	Fastqsanger.gz

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Spatiotemporal single-cell analysis of gene expression in the mouse suprachiasmatic nucleus

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Project description:We apply geographical position sequencing (Geo-seq), a method that combines laser capture microdissection (LCM) and single-cell RNA-seq technology, to investigate the heterogeneous nature of suprachiasmatic nucleus (SCN) in adult mouse. The 3D quantitative data enables spatial gene expression pattern visualization . The dataset identified genes that are coexpressed in a specific region, mark domains of similar global pattern of expression, and can be used for mapping the position of single cells dissociated from adult SCN.

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Spatiotemporal single-cell analysis of gene expression in the mouse suprachiasmatic nucleus

Project description:Mammalian circadian behaviors are orchestrated by suprachiasmatic nucleus (SCN) in the hypothalamus. Yet basic SCN cell types and their roles in circadian pacemaking are still unclear. In this study, we comprehensively characterized the basic cell types of SCN and their circadian and light-induced gene expression. In SCN, we identified seven major cell types among which neurons, astrocytes, ependymocytes and endothelial cells display cell-type specific circadian gene expression. We found that five SCN neuron subtypes, Avp+/Nms+, Vip+/Nms+, Vip+/Grp+, Cck+/C1ql3+ and Cck+/Bdnf+, differ in their spatial distribution, circadian rhythmicity and light responsiveness. Among the rhythmic neuron subtypes, we observed a wave of circadian gene expression propagating from the subtypes in posterior SCN to the subtypes in anterior SCN. Such wave can be explained by the neuropeptide-receptor signaling network in which Avp+/Nms+ subtype is the leader of circadian oscillations. Our study provides insights into the basic neural mechanism of circadian pacemaking in mammals.

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Spatiotemporal single-cell analysis of gene expression in the mouse suprachiasmatic nucleus

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Transcriptome expressed in the mouse suprachiasmatic nucleus

Project description:This array set was used to identify the genes that are highly expressed in the mouse suprachiasmatic nucleus (SCN). Because pharmacological inhibition of Gai/o activity with pertussis toxin hampers intercellular synchronization and causes dampened rhythms of the entire SCN, we hypothesized that member(s) of the Regulator of G protein Signaling (RGS) family might contribute to synchronized cellular oscillations in the SCN. To test this hypothesis, we surveyed all known mouse Rgs genes for their expression by using GeneChip and selected the genes that are highly expressed in the SCN for further analysis. 12h light:12h dark cycle entrained animals were released into constant darkess. SCN punches were taken from 10 animals at CT2 and 10 animals at CT14, pooled together, and subjected to DNA microarray analysis. CT2 and CT14 correspond, respectively, to 2 and 14 hours after presumptive onset of daytime under constant darkness.

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