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Gene expression signatures in GIST-T1 cells transfected with miR-34a and miR-335 mimic molecules

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Homo sapiens

PROVIDER: GSE68743 | GEO | 2015/05/25

SECONDARY ACCESSION(S): PRJNA283539

REPOSITORIES: GEO

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Gene expression signatures in GIST-T1 cells transfected with miR-34a and miR-335 mimic molecules

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2015-05-25 | E-GEOD-68743 | biostudies-arrayexpress

Gene expression signatures in GIST-T1 cells transfected with a miR-335 mimic molecule

2015-05-25 | GSE68742 | GEO

Gene expression signatures in GIST-T1 cells transfected with a miR-34a mimic molecule

2015-05-25 | GSE68740 | GEO

Gene expression signatures in GIST-T1 cells transfected with a miR-335 mimic molecule

Project description:To clarify the effect of miRNAs, we carried out a gene expression microarray analysis using GIST-T1 cells transfected with a miR-335 mimic or a negative control. We found that 1,095 probe sets (853 unique genes) were downregulated (>1.5-fold) by ectopic miR-335 expression. GIST-T1 cells were transfected with a mirVana miR-335 mimic (Ambion) or a mirVana miRNA mimic Negative Control #1 (Ambion). Forty-eight hours after transfection, total RNA extraction was carried out, and gene expression signatures were analyzed.

2015-05-25 | E-GEOD-68742 | biostudies-arrayexpress

Gene expression signatures in GIST-T1 cells transfected with a miR-34a mimic molecule

Project description:To clarify the effect of miRNAs, we carried out a gene expression microarray analysis using GIST-T1 cells transfected with a miR-34a mimic or a negative control. We found that 2,621 probe sets (1,933 unique genes) were downregulated (>1.5-fold) by ectopic miR-34a expression, including PDGFRA gene which was previously reported as a miR-34a target gene. GIST-T1 cells were transfected with a mirVana miR-34a mimic (Ambion) or mirVana miRNA mimic Negative Control #1 (Ambion). Forty-eight hours after transfection, total RNA extraction was carried out, and gene expression signatures were analyzed.

2015-05-25 | E-GEOD-68740 | biostudies-arrayexpress

Gene expression signatures in GIST-T1 cells transfected with a miR-186 inhibitor molecule

Project description:To clarify the role of miR-186 in GIST, we carried out a gene expression microarray analysis using GIST-T1 cells transfected with a miR-186 inhibitor or a negative control. We found that 253 probe sets (229 unique genes) were upregulated (>1.5-fold) by inhibition of miR-186 in GIST-T1 cells.

2017-01-01 | GSE85613 | GEO

Gene expression signatures in GIST-T1 cells transfected with siRNA targeting HOTAIR

2011-12-01 | GSE32064 | GEO

Gene expression signatures in GIST-T1 cells transfected with siRNA targeting HOTAIR

Project description:To analyze the effect of HOTAIR depletion in a gastrointestinal stromal tumor (GIST) cells, RNAi-mediated knockdown of HOTAIR was carried out using GIST-T1 cells. Gene expression microarray analysis revealed that a number of reported HOTAIR target genes were upregulated by knockdown of HOTAIR. Moreover, we found that 1424 genes were upregulated by siHOT (>2-fold), and Gene Ontology analysis revealed enrichment of genes related to “nucleus”, “chromosome” and “membrane-bounded organelle.” For RNAi-mediated knockdown of HOTAIR, three different Stealth siRNAs against HOTAIR were generated by Invitrogen, after which a mixture of the three was used for transfection. GIST-T1 cells in 6-well plates were transfected with 100 pmol of Stealth siRNA (Invitrogen) or a Stealth RNAi Negative Control Medium GC (Invitrogen) using Lipofectamine2000 (Invitrogen). Total RNA was extracted 48 h after transfection.

2011-12-01 | E-GEOD-32064 | biostudies-arrayexpress

miR-335 and miR-34a Promote renal senescence by suppressing mitochondrial antioxidative enzymes.

Project description:The molecular basis for aging of the kidney is not well understood. MicroRNAs (miRNAs) contribute to processes such as development, differentiation, and apoptosis, but their contribution to the aging process is unknown. Here, we analyzed the miRNA expression profile of young (3-month) and old (24-month) rat kidneys and identified the biologic pathways and genes regulated by differentially expressed miRNAs. We observed upregulation of 18 miRNAs with aging, mainly regulating the genes associated with energy metabolism, cell proliferation, antioxidative defense, and extracellular matrix degradation; in contrast, we observed downregulation of 7 miRNAs with aging, principally targeting the genes associated with the immune inflammatory response and cell-cycle arrest. Bioinformatics analysis suggested that superoxide dismutase 2 (SOD2) and thioredoxin reductase 2 (Txnrd2), located in the mitochondria, are potential targets of miR-335 and miR-34a, respectively. Aging mesangial cells exhibited significant upregulation of miR-335 and miR-34a and marked downregulation of SOD2 and Txnrd2. miR-335 and miR-34a inhibited expression of SOD2 and Txnrd2 by binding to the 3'-untranslated regions of each gene, respectively. Overexpression of miR-335 and miR-34a induced premature senescence of young mesangial cells via suppression of SOD2 and Txnrd2 with a concomitant increase in reactive oxygen species (ROS). Conversely, antisense miR-335 and miR-34a inhibited senescence of old mesangial cells via upregulation of SOD2 and Txnrd2 with a concomitant decrease in ROS. In conclusion, these results suggest that miRNAs may contribute to renal aging by inhibiting intracellular pathways such as those involving the mitochondrial antioxidative enzymes SOD2 and Txnrd2.

| S-EPMC3137573 | biostudies-literature

RNA-seq of mimic miR-34a transfected H1299 and DDX21 KO cell lines.

Project description:In order to investigate the role of DDX21 in RNA activation by miR-34a, next-generation sequencing analysis of RNA extracted from miR-34a transfected H1299 and DDX21 knock-out cell line was performed.

2021-10-18 | GSE185946 | GEO

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