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Time resolved ribosome profiling study of oxygen and glucose deprivation of rat pheochromocytoma cells

ABSTRACT: Oxygen and glucose metabolism plays a pivotal role in many (patho)physiological conditions. In particular, oxygen and glucose deprivation (OGD) occurs during ischemia and stroke, resulting in extensive tissue injury and cell death. We applied time-resolved ribosome profiling technique to assess early events at the level of gene expression in rat pheochromocytoma PC12 cells during short-term OGD. Most substantial alterations in transcripts levels and their translation were seen to occur in the first 20 minutes of OGD. The rapid adaptation of translation apparatus to OGD is global and involves altered elongation and initiation rates. We also observed salient and reproducible alterations in ribosome densities of individual mRNAs such as increased translation of particular upstream Open Reading Frames (uORFs); induced site-specific arrests of the ribosomes and synthesis of extended protein isoforms.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE60752 | GEO | 2015/04/10

SECONDARY ACCESSION(S): PRJNA259424

REPOSITORIES: GEO

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Time resolved ribosome profiling study of oxygen and glucose deprivation of rat pheochromocytoma cells

Project description:Oxygen and glucose metabolism plays a pivotal role in many (patho)physiological conditions. In particular, oxygen and glucose deprivation (OGD) occurs during ischemia and stroke, resulting in extensive tissue injury and cell death. We applied time-resolved ribosome profiling technique to assess early events at the level of gene expression in rat pheochromocytoma PC12 cells during short-term OGD. Most substantial alterations in transcripts levels and their translation were seen to occur in the first 20 minutes of OGD. The rapid adaptation of translation apparatus to OGD is global and involves altered elongation and initiation rates. We also observed salient and reproducible alterations in ribosome densities of individual mRNAs such as increased translation of particular upstream Open Reading Frames (uORFs); induced site-specific arrests of the ribosomes and synthesis of extended protein isoforms. Ribosome profiling (with mRNA-seq sequencing) was carried out at 0,20,40 and 60 minutes of OGD. Two biological replicates were used.

2015-04-10 | E-GEOD-60752 | biostudies-arrayexpress

Seven Novel Genes Related to Cell Proliferation and Migration of VHL-Mutated Pheochromocytoma

Project description:Pheochromocytoma has attracted much attention as a kind of neuroendocrine tumor with the highest genetic correlation in all types of tumors. Detailedly, the frequency of germline mutation in pheochromocytoma is as high as about 40%, and the mutation frequency of von Hippel Lindau (VHL) is the highest in all pheochromocytoma genes. However, the effects of VHL mutation on proteome of pheochromocytoma have remained unexplored. In this study, we compared and analyzed the proteomics of VHL-deficient and VHL WT PC12 cell line. It is showed that expressional level of 434 proteins (fold change > 1.3, VHL shRNA/WT) was significantly changed by VHL deficiency. Furthermore, the functions of these proteins were predicted by gene ontology (GO) and Kyoto Protocol Encyclopedia of Genes and Genomes (KEGG). Of the 434 proteins, 83 proteins, involved in cell proliferation, cell cycle, cell migration, and so on, were interpreted their complex regulatory relationships using String database. More importantly, we discovered 7 novel critical genes whose expression were up-regulated due to VHL deficiency, including Connective Tissue Growth Factor (CTGF), Syndecan Binding Protein (SDCBP), Cysteine Rich Protein 61 (CYR61/CCN1), Collagen Type III Alpha 1 Chain (COL3A1), Collagen Type I Alpha 1 Chain (COL1A1), Collagen Type V Alpha 2 Chain (COL5A2) and Serpin Family E Member 1 (SERPINE1), which may be related to cell proliferation and migration in VHL-mutated pheochromocytoma tumor samples. These results indicate that deficiency of VHL would promote the development of pheochromocytoma by activating expression of genes associated with cell proliferation and migration.

2021-03-11 | PXD021190 | Pride

Effects of polyglutamine expansion and subcellular localization of C-terminal fragment of Cav2.1 in PC12 rat pheochromocytoma cells

Project description:Polyglutamine(polyQ) expansion of α1A voltage-dependent calcium channel (Cav2.1) is the causative mutation of spinocerebellar ataxia type 6 (SCA6). The C-terminal fragment (CTF) of Cav2.1 makes aggregates in the cytoplasm of SCA6 Purkinje cells and may relate to the pathogenesis. In order to identify genes associated with polyQ expansion and subcellular localization of CTF, we analyzed gene expression profiles of PC12 rat pheochromocytoma cells using Tet-off system.

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Project description:In this study we sought to determine the effect of overexpressing the SUMOylation E2 conjugase Ubc9 on the response of murine Neural Stem Cells (NSCs) to oxygen-glucose-deprivation and restoration of oxygen/glucose (OGD/ROG). We established stably-expandable lines of NSCs from the subventricular zones (SVZ) of adult wild-type mice (WT NSCs) and Ubc9-overexpressing mice (Ubc9 NSCs) and profiled their transcriptional changes in response to OGD/ROG as well as in response to differentiation.

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Project description:Migroglia cells were exposed to oxygen-glucose deprivation (OGD) for 3 h. The mRNA was isolated and the expression profiles of OGD-activated cells were compared with the profiles of resting cells.

2015-11-23 | GSE63505 | GEO

miRNA profile of microglial cells under oxygen-glucose deprivation

Project description:Migroglia cells were exposed to oxygen-glucose deprivation (OGD) for 3 h. The miRNA was isolated and the expression profiles of OGD-activated cells were compared with the profiles of resting cells.

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Transcription profiling of rat at pheochromocytoma cell line PC12 treated with trimethyltin at low and high doses

Project description:The rat pheochromocytoma cell line PC12 cells were cultured in complete DMEM till 80% confluence, then placed at 5000 cells per squared cm. Cells were then plated in 24-well plates for cell viability assay and in T75 flasks for RNA isolation. Medium was replaced with serum-free fresh medium for 12 hours prior to TMT treatment. Gene expression patterns were then analysed using Rat Expression Array 230A Experiment Overall Design: In this study we analize gene expression patterns in PC12 cells treated with Trimethyltin (TMT). We utilized control cells (untreated) and two different concentration (1 and 5) Experiment Overall Design: We used three biological replicates, for the three concentration tested, according to MIAME guidelines Experiment Overall Design: (total 9 chips were used in this study).

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Effects of polyglutamine expansion and subcellular localization of C-terminal fragment of Cav2.1 in PC12 rat pheochromocytoma cells

Project description:Polyglutamine(polyQ) expansion of ?1A voltage-dependent calcium channel (Cav2.1) is the causative mutation of spinocerebellar ataxia type 6 (SCA6). The C-terminal fragment (CTF) of Cav2.1 makes aggregates in the cytoplasm of SCA6 Purkinje cells and may relate to the pathogenesis. In order to identify genes associated with polyQ expansion and subcellular localization of CTF, we analyzed gene expression profiles of PC12 rat pheochromocytoma cells using Tet-off system. We exmined gene expression profiles of Tet-off PC12 cells using the following four recombinant C-terminal fragments (rCTFs): rCTF-Q13-NLS, rCTF-Q13-NES, rCTF-Q28-NLS and rCTF-Q28-NES. We obtained gene expression data of both Dox (+) and Dox (-) conditions for each CTF. All assays were performed in duplicate.

2013-03-13 | E-GEOD-26933 | biostudies-arrayexpress

The role of a mammalian network in regulating ischemic stroke outcome I

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The role of a mammalian network in regulating ischemic stroke outcome III

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2023-01-31 | GSE213179 | GEO

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