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Single-Nucleus RNA Sequencing of Developing and Mature Superior Colliculus Identifies Neuronal Diversity and Candidate Mediators of Circuit Assembly

ABSTRACT: Single-Nucleus RNA Sequencing of Developing and Mature Superior Colliculus Identifies Neuronal Diversity and Candidate Mediators of Circuit Assembly

PROVIDER: PRJNA930871 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR23322542.fastq.gz	Fastqsanger.gz
	SRR23322543.fastq.gz	Fastqsanger.gz
	SRR23322544.fastq.gz	Fastqsanger.gz
	SRR23322545.fastq.gz	Fastqsanger.gz
	SRR23322546.fastq.gz	Fastqsanger.gz

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Single-Nucleus RNA Sequencing of Developing and Mature Superior Colliculus Identifies Neuronal Diversity and Candidate Mediators of Circuit Assembly

Project description:The superior colliculus (SC) is a sensorimotor structure in the midbrain that integrates inputs from multiple sensory modalities to initiate motor commands. It undergoes well-characterized steps of circuit assembly during development, rendering the mouse SC a popular model to study establishment and refinement of neural connectivity. Here we performed single nucleus RNA-sequencing analysis of the mouse SC isolated at various developmental time points. Our study provides a transcriptomic landscape of the cell-types that comprise the SC across murine development with particular emphasis on neuronal heterogeneity. We used these data to identify Pax7 as a marker for an anatomically homogeneous population of GABAergic neurons. Lastly, we report a repertoire of genes differentially expressed across the different postnatal ages, many of which are known for regulating axon guidance and synapse formation. Our data provide a valuable resource for interrogating the mechanisms of circuit development, and identifying markers for manipulating specific neuronal populations and circuits in the SC.

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Effects of eye opening on gene expression in the superficial layers of the rat superior colliculus

Project description:We performed RNA-seq on six samples of P20 Sprague Dawley rat superior colliculus, three control rats that underwent eye opening at P14 until P20 and three deprived rats which had their eyes glued closed from P14 until P20. Each sample was created from two pooled colliculi. RNA-seq of the superior colliculus with and without long term light deprivation.

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Modular organization of the motor space in the mouse superior colliculus

Project description:In order to characterize the genetic diversity within the Stratum Griseum Intermediale (SGI), we screened gene expression by extracting RNA from sensory and motor layers of the Superior Colliculus (SC) at post-natal day (P)7.

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Mapping Visual Functions onto Molecular Cell Types in the Mouse Superior Colliculus

Project description:To facilitate investigation of function, connectivity, and development of superficial superior colliculus (sSC), we identified 28 neuron subtypes and subtype-enriched marker genes from tens of thousands of adult mouse sSC neurons

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Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus

Project description:Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus

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Single-nucleus RNA sequencing of developing superior colliculus identifies neuronal diversity and candidate mediators of circuit assembly.

Project description:The superior colliculus (SC) is a sensorimotor structure in the midbrain that integrates input from multiple sensory modalities to initiate motor commands. It undergoes well-characterized steps of circuit assembly during development, rendering the mouse SC a popular model to study establishment of neural connectivity. Here we perform single-nucleus RNA-sequencing analysis of the mouse SC isolated at various developmental time points. Our study provides a transcriptomic landscape of the cell types that comprise the SC across murine development with particular emphasis on neuronal heterogeneity. We report a repertoire of genes differentially expressed across the different postnatal ages, many of which are known to regulate axon guidance and synapse formation. Using these data, we find that Pax7 expression is restricted to a subset of GABAergic neurons. Our data provide a valuable resource for interrogating the mechanisms of circuit development and identifying markers for manipulating specific SC neuronal populations and circuits.

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Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus – Pten

Project description:Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus – Pten

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Effects of eye opening on gene expression in the superficial layers of the rat superior colliculus

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Chronic chemogenetic activation of the superior colliculus in glaucomatous mice: local and retrograde molecular signature

Project description:One important facet of the glaucoma pathology is axonal damage, which ultimately disrupts the connection between the retina and its postsynaptic targets. The concurrent loss of retrograde support interferes with the functionality and survival of the retinal ganglion cells (RGCs). Con-versely, previous research has shown that stimulation of neuronal activity in a primary retinal target area—i.e., the superior colliculus— promotes RGC survival in an acute mouse model of glaucoma. To build further on this observation, we applied repeated chemogenetics in the superior colliculus of a more chronic model of glaucoma—i.e., the microbead occlusion model—and per-formed bulk RNA sequencing on collicular lysates and isolated RGCs. Our study revealed that chronic target stimulation upon glaucomatous injury phenocopies the a priori expected molecular response: growth factors were pinpointed as essential transcriptional regulators both in the locally stimulated tissue and in distant, unstimulated RGCs. Strikingly, and although the RGC tran-scriptome revealed an enrichment of pro-survival signaling pathways, functional rescue of injured RGCs was not achieved.

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Project description:The superior colliculus (SC) in the mammalian midbrain is essential for multisensory integration and is composed of a rich diversity of excitatory and inhibitory neurons and glia. The developmental principles directing the generation of SC cell-type diversity are however not understood. Here we pursued systematic cell lineage tracing in silico and in vivo, preserving full spatial information, using genetic MADM (Mosaic Analysis with Double Markers)-based clonal analysis with single-cell sequencing (MADM-CloneSeq). The analysis of clonally-related cell lineages revealed that radial glial progenitor (RGP) cells in SC are exceptionally multipotent. Individual resident RGPs have the capacity to produce all excitatory and inhibitory SC neuron types, even at the stage of terminal division. While individual clonal units show no pre-defined cellular composition, the establishment of appropriate relative proportions of distinct neuronal types occurs in a PTEN-dependent manner. Collectively, our findings provide an inaugural framework at single RGP/cell level of the mammalian SC ontogeny

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