Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

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

ABSTRACT: 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.

ORGANISM(S): Mus musculus

PROVIDER: GSE224407 | GEO | 2023/04/12

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus – Pten

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

2023-11-03 | GSE245104 | GEO

Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus – MADM-CloneSeq E10

2023-11-03 | GSE245102 | GEO

Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus – MADM-CloneSeq E12

2023-11-03 | GSE245103 | GEO

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.

2019-07-31 | GSE135082 | GEO

Multipotent Progenitors Instruct Ontogeny of the Superior Colliculus - pooled embryonic Fzd10 lineage

2023-11-03 | GSE245105 | GEO

Astrocyte-encoded positional cues maintain sensorimotor circuit integrity

Project description:Astrocytes, the most abundant cells in the central nervous system, promote synapse formation and help refine neural connectivity. Although they are allocated to spatially distinct regional domains during development, it is unknown whether region-restricted astrocytes are functionally heterogeneous. Here we show that postnatal spinal cord astrocytes express several region-specific genes, and that ventral astrocyte-encoded Semaphorin3a (Sema3a) is required for proper motor neuron and sensory neuron circuit organization. Loss of astrocyte-encoded Sema3a led to dysregulated α−motor neuron axon initial segment orientation, markedly abnormal synaptic inputs, and selective death of α−but not of adjacent γ−motor neurons. Additionally, a subset of TrkA+ sensory afferents projected to ectopic ventral positions. These findings demonstrate that stable maintenance of a positional cue by developing astrocytes influences multiple aspects of sensorimotor circuit formation. More generally, they suggest that regional astrocyte heterogeneity may help to coordinate postnatal neural circuit refinement. 12 total samples consisting of three biological replicates each of flow sorted postnatal day 7 dorsal spinal cord astrocytes, ventral spinal cord astrocytes, dorsal SC non astrocytes, and ventral SC non astrocytes

2014-05-02 | E-GEOD-55054 | biostudies-arrayexpress

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

2023-04-21 | GSE223155 | GEO

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.

2015-09-09 | E-GEOD-72787 | biostudies-arrayexpress

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.

2022-06-15 | GSE202012 | GEO