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Transcriptomic atlas of thalamic nuclei

ABSTRACT: Transcriptomic atlas of thalamic nuclei

PROVIDER: PRJNA552996 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR9649610.fastq.gz	Fastqsanger.gz
	SRR9649620.fastq.gz	Fastqsanger.gz
	SRR9649630.fastq.gz	Fastqsanger.gz
	SRR9649640.fastq.gz	Fastqsanger.gz
	SRR9649650.fastq.gz	Fastqsanger.gz

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Transcriptomic atlas of thalamic nuclei

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Project description:The thalamic reticular nucleus (TRN), the major source of thalamic inhibition, is known to regulate thalamocortical interactions critical for sensory processing, attention and cognition. TRN dysfunction has been linked to sensory abnormality, attention deficit and sleep disturbance across multiple neurodevelopmental disorders. Currently, little is known about the organizational principles underlying its divergent functions. We performed an integrative study linking single-cell molecular and electrophysiological features of the mouse TRN to connectivity and systems-level function. We found that TRN cellular heterogeneity is characterized by a transcriptomic gradient of two negatively correlated gene expression profiles, each containing hundreds of genes. Neurons in the extremes of this transcriptomic gradient express mutually exclusive markers, exhibit core/shell-like anatomical structure and have distinct electrophysiological properties. The two TRN subpopulations make differential connections to the functionally distinct first-order and higher order thalamic nuclei to form molecularly defined TRN-thalamus subnetworks. Selective perturbation of the two subnetworks in vivo revealed their differential role in regulating sleep. Taken together, our study provides a comprehensive atlas for TRN neurons at the single-cell resolution, and links molecularly defined subnetworks to the functional organization of the thalamo-cortical circuits.

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