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The difference of gene expression in mouse OPCs in normothermic and hypothermic culture

ABSTRACT: We have found that the cell yield of oligodendrocyte precursor cells (OPCs) are higher in 31.5 ℃ than in 37 ℃ not by suppression of apoptosis but by enhancement of proliferation. Here, we performed transcriptome analysis using Affymetrix GeneChip on the primary cultured oligodendrocyte precursor cells prepared from the brain of ICR mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE20645 | GEO | 2010/03/06

SECONDARY ACCESSION(S): PRJNA124867

REPOSITORIES: GEO

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The difference of gene expression in mouse OPCs in normothermic and hypothermic culture

Project description:We have found that the cell yield of oligodendrocyte precursor cells (OPCs) are higher in 31.5 degC than in 37 degC not by suppression of apoptosis but by enhancement of proliferation. Here, we performed transcriptome analysis using Affymetrix GeneChip on the primary cultured oligodendrocyte precursor cells prepared from the brain of ICR mice. Oligodendrocyte precursor cells were prepared from primary mixed cell cultures of embryonic mouse cerebral hemispheres. The cerebral hemispheres from 15-day-old mouse embryos were enzymatically dissociated, seeded and cultured for 5 days in D-MEM containing 10% FBS. The cells were passaged to serum-free basal medium and cultured for further 48 hr at 37 degC and 31.5 degC.

2010-04-06 | E-GEOD-20645 | biostudies-arrayexpress

Transcriptomic analysis of undifferentiated and differentiated NMR OPCs.

Project description:Transcriptome of long-lived naked-mole rat (NMR) oligodendrocyte progenitor cells (OPCs) were compared with OPCs of other species.

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Transcriptome analysis of freshly isolated young and aged rat oligodendrocyte progenitor cells (OPCs)

Project description:The age-related failure to regenerate lost oligodendrocytes from oligodendrocyte progenitor cells (OPCs) is associated with irreversible neurodegeneration in multiple sclerosis. Consequently, regenerative therapies for chronic demyelinating diseases remain a long sought after but elusive goal. Here we show that adult OPCs lose their inherent differentiation potential with increasing age. Moreover, aged OPCs do not remain responsive to pro-differentiation signals, posing significant constraints on the effectiveness of remyelination therapies based on the enhancement of OPC differentiation. We show that this reduced regenerative capacity is associated with hallmarks of cellular ageing, including reduced metabolic function and increased DNA damage. We find that fasting or treatment with metformin can reverse these changes and restore the regenerative capacity of aged OPCs, improving remyelination in aged animals following white matter injury. Importantly, aged OPCs treated with metformin regain their responsiveness to pro-differentiation factors, suggesting a potential for synergistic effects of rejuvenation and pro-differentiation therapies. Our findings have direct implications for understanding oligodendrocyte regeneration failure with ageing and how it might be reversed therapeutically.

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Project description:Gene expression analysis after GPR17 silencing in oligodendrocyte precursor cells (OPCs)

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RNA-seq of oligodendroglia progenitor cells(OPCs) isolated from WT and DISC1-Δ3 mice

Project description:Disrupted-in-schizophrenia-1 (DISC1), as one of the schizophrenia susceptibility genes highly expressed in oligodendrocyte precursor cells (OPCs), impacts oligodendroglial differentiation and myelination. Several DISC1 splicing variants, including DISC1-Δ3 (a DISC1 transcript with deleted exon 3 in a single allele), are abnormally upregulated in human schizophrenia patients, however, how they trigger the onset of the disease has not been explored yet. Here, we generate a mouse line that mimics human DISC1-Δ3 in oligodendrocyte lineage cells, and demonstrate that hypertrophic OPCs rather than myelin, are responsible for the neuronal deficits and schizophrenia-like symptoms. RNAseq was performed to analyze the transcriptome change in DISC1-Δ3 OPC, revealing that DISC1-Δ3 elevates the Wnt pathway activity in OPCs, which promotes Wif1 expression, thereby leading to disrupted synapse formation in neighboring neurons. Interfering or knockout of Wif1 in DISC1-Δ3 OPCs could rescue neuronal synaptic and functional deficits in our mouse model. Our findings shed light on the myelination-independent role of OPCs on the onset of schizophrenia, and may pave the way for new rational lines of inquiry in developing therapeutic strategies for schizophrenia.

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Culture protocol and transcriptomic analysis of murine SVZ NPCs and OPCs

Project description:The mammalian adult brain contains two neural stem and precursor (NPC) niches: subventricular zone [SVZ] lining the lateral ventricles and subgranular zone [SGZ] in the hippocampus. From these SVZ NPCs represent the largest NPC pool. Notably, while SGZ NPCs typically only produce neurons and astrocytes, SVZ NPCs produce neurons, astrocytes and oligodendrocytes throughout life. Of particular importance is the generation and replacement of oligodendrocytes, the only myelinating cells of the central nervous system (CNS). SVZ NPCs contribute to myelination by regenerating oligodendrocyte precursor cell (OPC) pool and by differentiating into oligodendrocytes in the developing and demyelinated brain. The neurosphere assay has been widely adopted by the scientific community to facilitate the study of NPCs in vitro. Here, we present a streamlined protocol for culturing postnatal and adult SVZ NPCs and OPCs from primary neurosphere cells. We characterize the purity and differentiation potential as well as provide RNA-sequencing profiles of postnatal SVZ NPCs, postnatal SVZ OPCs and adult SVZ NPCs. We show that primary neurospheres cells generated from postnatal and adult SVZ differentiate into neurons, astrocytes and oligodendrocytes concurrently and at comparable levels. SVZ OPCs are generated by subjecting primary neurosphere cells to OPC growth factors fibroblast growth factor (FGF) and platelet-derived growth factor-AA (PDGF-AA). We further show SVZ OPCs can differentiate into oligodendrocytes in the absence and presence of thyroid hormone T3. Transcriptomic analysis confirmed the identities of each cell population and revealed novel immune and signalling pathways expressed in an age and cell type specific manner.

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Gene expression analysis after miR-125a-3p over-expression in oligodendrocyte precursor cells (OPCs)

Project description:Gene expression analysis after miR-125a-3p over-expression in oligodendrocyte precursor cells (OPCs)

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Gene expression analysis after GPR17 silencing in oligodendrocyte precursor cells (OPCs)

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Expression profiles in Chd7 knockdown oligodendrocyte precursor cells

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