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Identification of Sox3 targets in mouse neural progenitor cells

ABSTRACT: Sox3 has been shown to be expressed within neural progenitors of the developing mouse central nervous system. However, identification of Sox3 targets within neural progenitors has remained elusive. Using microarrays we compared populations of in vitro derived mouse neural progenitor cells, with or without Sox3, to identify putative Sox3 neural progenitor targets.

ORGANISM(S): Mus musculus

PROVIDER: GSE53760 | GEO | 2014/02/28

SECONDARY ACCESSION(S): PRJNA232818

REPOSITORIES: GEO

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Identification of Sox3 targets in mouse neural progenitor cells

Project description:Sox3 has been shown to be expressed within neural progenitors of the developing mouse central nervous system. However, identification of Sox3 targets within neural progenitors has remained elusive. Using microarrays we compared populations of in vitro derived mouse neural progenitor cells, with or without Sox3, to identify putative Sox3 neural progenitor targets. Mouse R1 ES cells, with or without Sox3, were differentiated into neural progenitor cells using the standard N2B27 protocols. At the fourth day of N2B27 differentiation, over two independent series, RNA was extracted from both Sox3 positive and Sox3 null populations and hybridization on a GeneChip Mouse Gene 1.0 ST Affymetrix microarrays.

2014-02-28 | E-GEOD-53760 | biostudies-arrayexpress

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Project description:SOX3 is highly expressed in neural progenitor cells (NPC) within the developing mouse cetral nervous system. A ChIP-Seq experiement was performed for SOX3 in NPCs derived from embryonic stem cells. Identification of SOX3 binidng sites from 3 independent ChIP-seq samples in NPCs

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Identification of Highly Conserved Putative Developmental Enhancers Bound by SOX3 in Neural Progenitors Using ChIP-Seq

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Enrichment, proteome analysis and transplantation of human embryonic stem cell derived dopaminergic progenitors expressing LMX1a

Project description:Despite the progress in safety and efficacy of cell therapy with pluripotent stem cells (PSCs), the presence of residual undifferentiated stem cells or proliferating neural progenitor cells (NPCs) with rostral identity has remained a major challenge. Here we reported the generation of an LMX1A knock-in GFP reporter human embryonic stem cell (hESC) line that marks the early dopaminergic progenitors during neural differentiation. Purified GFP positive cells in vitro exhibited expression of mRNA and proteins that characterized and matched the midbrain dopaminergic identity. Further proteomic analysis of enriched LMX1A+ cells identified several membrane associated proteins including CNTN2, enabling prospective isolation of LMX1A+ progenitor cells. Transplantation of hPSC-derived purified CNTN2+ progenitors enhanced dopamine release from transplanted cells in the host brain and alleviated Parkinson’s disease symptoms in animal models. Our study establishes an efficient approach for purification of large numbers of hPSC-derived dopaminergic progenitors for therapeutic applications.

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A dynamic view of the proteomic landscape during differentiation of ReNcell VM cells, an immortalized human neural progenitor line

Project description:The immortalized human ReNcell VM cell line represents a reproducible and easy-to-propagate cell culture system for studying the differentiation of neural progenitors. To better characterize the starting line and its differentiation, we assessed protein and phospho-protein levels over a two-week period during which ReNcell progenitors differentiated into neurons, astrocytes, and oligodendrocytes. Five of the datasets measured protein levels or states of phosphorylation based on tandem-mass-tag (TMT) mass spectrometry. Proteomic analysis revealed reproducible changes in pathways responsible for cytoskeletal rearrangement, cell phase transitions, neuronal migration, glial differentiation, neurotrophic signalling and extracellular matrix regulation. Proteomic data revealed accelerated differentiation in cells treated with the poly-selective CDK and GSK3 inhibitor kenpaullone or the HMG-CoA reductase inhibitor mevastatin, both of which have previously been reported to promote neural differentiation. These data provide in-depth information on the ReNcell progenitor state and on neural differentiation in the presence and absence of drugs, setting the stage for functional studies.

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Progenitor cell diversity in the developing mouse neocortex

Project description:In the mammalian neocortex, diverse projection neuron types are generated by the same pool of neural progenitors in sequential waves. How neuronal cell type specification is related to developmental timing remains unclear. To determine whether neural progenitor cell heterogenity correlates with neuronal type spcification, we performed single cell RNA sequencing analysis of the developing mouse neocortex (E10.5 through E18.5) by Drop-Seq. We uncovered cellular and molecular diversity among neuroepithelial cells, radial glial cells, intermediate progenitors and neuron types.

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