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MiR-30e* induced gene expression alteration in glioma cells

ABSTRACT: This experiment is designed to evaluate gene expression alteration following miR-30e* transfection in glioma cells. We find a significant elevation of NF kappa B transcriptional targets.

ORGANISM(S): Homo sapiens

PROVIDER: GSE20293 | GEO | 2010/02/17

SECONDARY ACCESSION(S): PRJNA125321

REPOSITORIES: GEO

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miR-182 induced gene expression alteration in glioma cells

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:To evaluate gene expression alteration following miR-139-5p transfection in glioma cells. We find a significant downregulation of two transcriptional factors, E2F3 and HoxA9. Total RNA were extracted from U87, LN229 and U251 glioma cells transfected with miR-139-5p or miRNA negative control.

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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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Homo sapiens

Project description:miR-30e* induced gene expression alteration in glioma cells

| PRJNA125321 | ENA

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