MiR-182 induced gene expression alteration in glioma cells
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ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE33293 | GEO | 2011/11/15
SECONDARY ACCESSION(S): PRJNA149265
REPOSITORIES: GEO
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Project description:This experiment is designed to evaluate gene expression alteration following miR-182 transfection in glioma cells. We find a significant elevation of NF kappa B transcriptional targets. Total RNA were extracted from SNB-19 glioma cells transfected with miR-182 mimic oligo or miRNA mimic negative control 36 hours after transfection, two biological replications for each treatment.
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Project description:Post-transcriptional regulation of gene expression contributes to the protein output of a cell, however, methods for measuring translational regulation in complex in vivo systems are lacking. Here, we describe a sensitive method for measuring translational regulation in defined cell populations from heterogeneous tissue in vivo. We adapted the translating ribosome affinity purification (TRAP) methodology to measure the relative occupancy of individual mRNA transcripts in translating ribosomes in the Olig2-positive tumor cell population in a genetically engineered mouse model (GEM) of glioma. Global measurement of paired ribosome-bound and total cellular mRNA populations from tumor cells in vivo identified a broad distribution of relative ribosome occupancies amongst mRNA species that was highly reproducible across biological samples. Comparison of the translation state of glioma cells to non-transformed oligodendrocyte progenitor cells in normal brain identified global alteration of translation in tumor, and specifically of genes involved in cell division and synthetic metabolism. Furthermore, investigation of alteration in steady state translational efficiencies upon loss of PTEN, one of the most frequently mutated and deleted tumor suppressors in glioma, identified differential translation of proteins involved in cellular respiration, canonically regulated by PI3K/Akt signaling, and cellular glycosylation profiles, deregulation of which is known to be associated with tumor progression. Application of the translation efficiency profiling method described here to other biological contexts and conditions would extend our knowledge of the scope and impact of this important mode of gene regulation in complex in vivo systems. Total RNA and ribosome-bound RNA from Olig2+ cells in normal mouse brain and a mouse model of glioma was collected, microarray and compared.
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Project description:This experiment is designed to evaluate gene expression alteration following AEG-1 (MTDH) silencing in glioma cells. AEG-1 is found to be a potential regulator through interaction with other transcription factor. We intended to investigate the enriched transcription factor dependent downstream gene sets regulated by AEG-1 form the differential expressed genes we obtained from AEG-1 silencing.
2011-07-12 | GSE29952 | GEO
Project description:Post-transcriptional regulation of gene expression contributes to the protein output of a cell, however, methods for measuring translational regulation in complex in vivo systems are lacking. Here, we describe a sensitive method for measuring translational regulation in defined cell populations from heterogeneous tissue in vivo. We adapted the translating ribosome affinity purification (TRAP) methodology to measure the relative occupancy of individual mRNA transcripts in translating ribosomes in the Olig2-positive tumor cell population in a genetically engineered mouse model (GEM) of glioma. Global measurement of paired ribosome-bound and total cellular mRNA populations from tumor cells in vivo identified a broad distribution of relative ribosome occupancies amongst mRNA species that was highly reproducible across biological samples. Comparison of the translation state of glioma cells to non-transformed oligodendrocyte progenitor cells in normal brain identified global alteration of translation in tumor, and specifically of genes involved in cell division and synthetic metabolism. Furthermore, investigation of alteration in steady state translational efficiencies upon loss of PTEN, one of the most frequently mutated and deleted tumor suppressors in glioma, identified differential translation of proteins involved in cellular respiration, canonically regulated by PI3K/Akt signaling, and cellular glycosylation profiles, deregulation of which is known to be associated with tumor progression. Application of the translation efficiency profiling method described here to other biological contexts and conditions would extend our knowledge of the scope and impact of this important mode of gene regulation in complex in vivo systems.
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Project description:miR-182 induced gene expression alteration in glioma cells
| PRJNA149265 | ENA
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