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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 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.

ORGANISM(S): Mus musculus

SUBMITTER: Sinya Imada

PROVIDER: E-GEOD-20645 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Hypothermia-induced increase of oligodendrocyte precursor cells: Possible involvement of plasmalemmal voltage-dependent anion channel 1.

Imada Shinya S Yamamoto Masahiro M Tanaka Kayoko K Seiwa Chika C Watanabe Kenji K Kamei Yoshimasa Y Kozuma Shiro S Taketani Yuji Y Asou Hiroaki H

Journal of neuroscience research 20101008 16

Hypothermia is believed to suppress cell proliferation by inducing apoptosis/necrosis and phase-specific/nonspecific cell cycle arrest, which are, directly or indirectly, related to a reduced energy supply. Intriguingly, hypothermia is known to improve neurological recovery of animals and humans exposed to focal brain hypoxic-ischemic injury. The underlying mechanism of the neuroprotective effect of hypothermia is unclear, although the prevention of neural cell apoptosis is thought to play a rol ...[more]

PMID: 20936704

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E-GEOD-20645

Project description:Transcription profiling by array of mouse oligodendrocyte precursor cells cultured at 31.5 degC and 37 degC

2015-09-15 | E-GEOD-20645 | ExpressionAtlas

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 ℃ 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.

2010-03-06 | GSE20645 | GEO

phosphoproteome of hippocampus after focal cerebral ischemia 1.5 h and reperfusion 24 h in mice

Project description:We obtained the profiles of neuronal phosphoproteome after cerebral ischemia and reperfusion by isolating mice hippocampus. Hippocampus combined from either nine sham or nine focal cerebral ischemia 1.5 h and reperfusion 24 h (IR) mice were lysed, digested, labeled with different TMT tags, then pooled and analyzed by LC/LC-MS/MS. In total, we quantified 7,865 phosphopeptides,179 phosphorylation sites of 129 proteins were upregulated and 843 phosphorylation sites of 494 proteins were downregulated in hippocampus during cerebral ischemia 2 h compare with sham operation.

2024-02-15 | PXD033851 | Pride

Proteome of hippocampus after focal cerebral ischemia 1.5 h and reperfusion 24 h in mice

Project description:We obtained the profiles of neuronal proteome after cerebral ischemia and reperfusion by isolating mice hippocampus. Hippocampus combined from either nine sham or nine focal cerebral ischemia 1.5 h and reperfusion 24 h (IR) mice were lysed, digested, labeled with different TMT tags, then pooled and analyzed by LC/LC-MS/MS. In total, we quantified 5,059 proteins. We identified 142 differentially expressed proteins (t-test, p-value<0.05) after IR compared to sham groups. The results showed that 92 proteins were upregulated, and 50 proteins were downregulated after IR compared to sham groups. Gene ontology (GO) enrichment analysis of differentially expressed proteins between sham and IR groups. The results showed that the biological process of most of upregulated genes linked with immune inflammatory related responses were increased. And KEGG pathway analysis for upregulated genes showed that multiple immune inflammatory response pathways also increased significantly, such as TNF-signaling, NF-κB signaling and cytokine-cytokine receptor interaction, as well as NOD-like receptor signaling, and toll-like receptor signaling.

2024-02-15 | PXD033938 | Pride

Trans-effects of sub-chromosomal duplications on DNA methylation patterns in mouse models of Down syndrome: whole genome bisulfite sequencing of cerebral samples from Dp(10)1Yey and Dp(16)1Yey mouse models.

Project description:Background: Trisomy 21 causes Down syndrome (DS), but the mechanisms by which the extra chromosome leads to deficient intellectual and immune function are not well understood. Results: Here, we profile CpG methylation in DS and control cerebral and cerebellar cortex of adults and cerebrum of fetuses. We purify neuronal and non-neuronal nuclei and T-lymphocytes and find biologically relevant genes with DS-specific methylation (DS-DM) in brain cells. Some genes show brain-specific DS-DM, while others show stronger DS-DM in T cells. Both 5-methyl-cytosine and 5-hydroxy-methyl-cytosine contribute to the DS-DM. Thirty percent of genes with DS-DM in adult brain cells also show DS-DM in fetal brains, indicating early onset of these epigenetic changes, and we find early maturation of methylation patterns in DS brain and lymphocytes. Some, but not all, of the DS-DM genes show differential expression. DS-DM preferentially affected CpGs in or near specific transcription factor binding sites, implicating a mechanism involving altered transcription factor binding. Methyl-seq of brain DNA from mouse models with sub-chromosomal duplications mimicking DS reveals partial but significant overlaps with human DS-DM and shows that multiple chromosome 21 genes contribute to the downstream epigenetic effects. Conclusions: These data point to novel biological mechanisms in DS and have general implications for trans effects of chromosomal duplications and aneuploidies on epigenetic patterning. Examination of methylation changes in two mouse models of Down syndrome with sub-chromosomal duplications, Dp(10)1Yey and Dp(16)1Yey, compared to one littermate wild type mouse using whole genome bisulfite sequencing.

2015-10-30 | E-GEOD-74505 | biostudies-arrayexpress

Cross-species transcriptomic comparison of in vitro and in vivo mammalian neural cells

Project description:We report the first RNA profiing of mammalian neural cells grown in vitro. About 50 million reads are generated by RNA-seq from rat astrocytes, neurons and oligodendrocyte precursor cells in primary culture. These data are compared with theose generated from the correponding mouse neural cells that are acutely purified from brains. Cross-species RNA-seq data analysis revealed hundreds of genes that are differentially expressed between cultured and acutely purified cells. Astrocytes have more such genes compared to neurons and oligodendrocyte precursor cells, indicating that signalling pathways are greatly perturbed in cultured astrocytes. mRNA profiles of rat astrocytes, neurons and oligodendrocyte precursor cells cultured in vitro

2015-09-05 | E-GEOD-72739 | biostudies-arrayexpress

RNA-seq analysis for mRNA expression change in oxygen/glucose deprivation-treated cultured oligodendrocyte precursor cells

Project description:Oligodendrocyte precursor cells (OPCs) regulate neuronal, glial and vascular systems in diverse ways and display phenotypic heterogeneity beyond their well-known role as a reservoir for mature oligodendrocytes. Here we demonstrated that perivascular OPCs in cerebral cortex were increased coupling with post-stroke angiogenesis in a mouse model of stroke induced by middle cerebral artery occlusion (MCAO). RNA-seq analysis revealed that primary cultured OPCs notably increased the gene expressions of numerous pro-angiogenic factors, while decreased those related to OPC maturation after oxygen glucose deprivation. The data showed that cerebral ischemia shifts the phenotype of OPCs to perivascular subtypes which can promote angiogenesis.

2020-05-12 | GSE114609 | GEO

Project description:Transcriptome profile of cultured rat oligodendrocyte precursor cells

| PRJNA1014697 | ENA

microRNA expression in human brain development

Project description:Profile the expression of micoRNAs in the human brain at prenatal, early childhood, and adult timepoints 37 prenatal cerebral tissue samples, 11 postnatal cerebral tissue samples, 2 adult total brain samples (FirstChoice Human Brain Reference RNA cat# AM6050 and FirstChoice Human Brain Total RNA cat# AM7962*. *The current FirstChoice Human Brain Total RNA (2013), is from a 78 year old white female, while the FirstChoice Total RNA used in this deposited data set was from an 81 year old white male, which is no longer available through Ambion/Life Technologies.)

2013-03-21 | E-GEOD-45126 | biostudies-arrayexpress

The role of Clec4e (Mincle) in microglia response to transient ischemic injury

Project description:This data set shows dramatic changes in gene expression in microglia isolated from C57Bl6/J mice subjected to transient middle cerebral artery occlusion, as compared to those subjected to sham surgery. Mice deficient in Mincle (Clec4e-/-) showed significantly improved injury outcomes 3 and 7 days after transient middle cerebral artery occlusion. However, when comparing changes in gene expression in microglia 24 hours after blood reperfusion, there were no differences between wild-type and Clec4e-/- mice, indicating that Mincle does not participate in early microglial activation. Wild type and Mincle knock-out (Clec4e-/-) mice. After 1 h of transient middle cerebral artery occlusion (tMCAO) and 24 h of reperfusion, mice were perfused with PBS, their brains dissected, and 2 ipsilesional hemispheres (with cerebellum and brainstem removed) pooled for microglia isolation. For sham-operated animals, the whole forebrain was used and brains were not pooled. After myelin separation by Percoll gradient centrifugation, around 80,000 CD45intermediate, CD11b+ microglial cells were sorted from each sample. Sham samples n=3, tMCAO samples n=5.

2016-03-24 | E-GEOD-77986 | biostudies-arrayexpress

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