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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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TRANSCRIPTOMIC PROFILING OF ASTROCYTES TREATED WITH THE RHO KINASE INHIBITOR FASUDIL REVEALS CYTOSKELETAL AND PRO-SURVIVAL RESPONSESTRANSFORMATION INDUCED BY THE RHO KINASE INHIBITOR FASUDIL.

ABSTRACT: Analysis of genome wide gene expression changes over a time course of 24 hours induced by the Rho kinase inhibitor Fasudil in primary mouse astrocyte cultures. Total RNA was extracted from primary astrocyte cultures prepared from mouse forebrain from 1.5 day old mice and treated with Fasudil or vehicle control for 2, 6, 12 or 24 hours.

ORGANISM(S): Mus musculus

SUBMITTER: Victoria Perreau

PROVIDER: E-GEOD-25829 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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TRANSCRIPTOMIC PROFILING OF ASTROCYTES TREATED WITH THE RHO KINASE INHIBITOR FASUDIL REVEALS CYTOSKELETAL AND PRO-SURVIVAL RESPONSESTRANSFORMATION INDUCED BY THE RHO KINASE INHIBITOR FASUDIL.

Project description:Analysis of genome wide gene expression changes over a time course of 24 hours induced by the Rho kinase inhibitor Fasudil in primary mouse astrocyte cultures.

2011-05-10 | GSE25829 | GEO

Effect of Lead on Genome-Wide Expression in Developing Mouse Brain during Synaptogenesis

Project description:Lead exposure causes a variety of health effects, especially in children, that may include cognitive and behavioural problems. This study explores the mechanisms associated with this relationship by assessing alterations in gene expression of C57BL/6J pups treated with 50mg/kg lead compared to controls. In addition this study also analyzed brain gene expression differences in Metallothionein I and II (Mt-I and Mt-II) knockout mice treated with lead. Pups of three genotypes (C57BL/6J, Mt-KO with a C57BL/6J background and Heterozygote Mt-KO) were injected with lead acetate during synaptogenesis and weight-matched controls were injected with saline at the same time points. Whole brains were harvested and RNA extracted and pooled from 5 pups and hybridized to Mouse Genome 430 2.0 Arrays. In total 6 arrays were used, one for each genotype and treatment.

2014-01-20 | E-GEOD-26894 | biostudies-arrayexpress

Comparative microRNA profiling of sporadic and BRCA1 associated basal-like breast cancers

Project description:Analysis of miRNA expression in grade 3 luminal, sporadic and BRCA1 associated basal-like breast cancers 44 primary grade III breast cancer (11 BRCA1 basal, 16 sporadic basal, 17 luminal) and 13 normal breast FFPE (formalin fixed, paraffin embedded) specimens, plus 7 controls and 5 cell lines were analysed. The aim of the study was to derive grade-specific miRNA signatures for sporadic and BRCA1 basal-like breast cancers, and to ascertain an immunohistochemical profile regulated by BRCA1 specific miRNAs for potential diagnostic uses.

2014-09-16 | E-GEOD-61438 | biostudies-arrayexpress

Transcription factor Runx1 cooperates with MyoD and c-Jun to regulate the balance of myoblast proliferation/differentiation [Expression Study]

Project description:Runx1 is expressed in regenrating muscle, specifically in the muscle adult stem cells- the satellite cells. Its exact role and target genes were yet to be identified This experiment aimed at determining the Runx1 regulated genes in muscle regeneration, specifically in Satellite cells To elucidate the Runx1-mediated transcriptional program involved in early stages of muscle regeneration, we compared gene expression profiles in WT and Runx1f/f primary myobalsts (PM). PM were purified from both genotypes , Total RNA was isolated, reverse-transcribed, fragmented, labeled and hybridized to Affymetrix MoGene 1.0 ST DNA array.

2015-07-23 | E-GEOD-55556 | biostudies-arrayexpress

Loss of Runx3 in osteoblasts provokes severe congenital osteopenia

Project description:Murine Runx3 is expressed in developing bone osteoblasts (OBLs) and its deletion in these cells culminates in severe congenital osteopenia. We demonstrate that Runx3 is non-redundantly involved in the proliferation of early pre-committed OBL progenitor cells, a critical step in the generation of adequate numbers of bone-forming OBLs. Thus, in the absence of Runx3 in cells of this lineage, the number of mature/active OBLs is significantly diminished, providing a mechanistic explanation to the observed osteopenia. This experiment was aimed at identifying genes that are likely regulated by Runx3 along osteoblastogenesis. To elucidate the Runx3-mediated transcriptional program along OBL differentiation, we compared gene expression profile in WT and Runx3f/f/Col1a1-cre calvarial OBLs. Progenitor cells were purified and RNA extracted, reverse-transcribed, fragmented, labeled and hybridized to GeneChipÂ® Mouse Gene 2.0 ST Array.

2014-05-01 | E-GEOD-57195 | biostudies-arrayexpress

Equivalent mutations in the eight subunits of the chaperonin CCT produce dramatically different cell phenotypes.

Project description:The eukaryotic cytoplasmic chaperonin-containing TCP-1 (CCT) is a complex formed by two back-to-back stacked hetero-octameric rings that assists the folding of actins, tubulins and other proteins in an ATP-dependent manner. Here, we decided to test the significance of the hetero-oligomeric nature of CCT for its function by introducing, in each of the eight subunits in turn, an identical mutation at a position involved in ATP binding and conserved in all the subunits, in order to establish the extent of ‘individuality’ of the various subunits. Our results show that these identical mutations lead to dramatically different phenotypes. For example, cells with the mutation in CCT2 have an excess of actin patches and are the only pseudo-diploid strain. By contrast, cells with the mutation in CCT7 are the only ones to accumulate juxta-nuclear protein aggregates that may reflect the absence of stress response in this strain. System-level analysis of the strains using RNA microarrays reveals connections between CCT and several cellular networks including ribosome biogenesis and TOR2 that help to explain the phenotypic variability observed We used microarrays to reveal the differences in mRNA expression caused by the different mutations. All yeast strains were grown at 30 °C to OD(600)=0.5. Their total RNA was extracted and reverse transcribed to cDNA and transcribed back to RNA in the presence of biotinylated nucleotide analog. The biotinylated RNA was fragmented and hybridized to GenCHip Yeast Genome 2.0 array.

2010-06-30 | E-GEOD-19511 | biostudies-arrayexpress

Temporal transcriptional profiling of growth resumption following polyamine-depletion

Project description:Polyamines are absolutely required for cell growth and proliferation. While polyamine depletion results in reversible cell cycle arrest, the actual mechanism of growth inhibition is still obscure. This experiment aimed at determining the cellular processes elicited by re-addition of polyamines to polyamine-depleted (growth arrested) cells. In order to reveal the general transcriptional responses to polyamine re-addition, NIH3T3 mouse fibroblasts were first treated with 1mM L-Difluoromethylornithine (DFMO) for 96 hours and then growth stimulated by spermidine. Cells were collected at 0, 30, 60, 120, 240, 360, 480 and 600 min upon addition of spermidine to polyamine-depleted (growth arrested) cells. Total RNA was isolated, reverse-transcribed, fragmented, labeled and hybridized to Affymetrix MoGene 1.0 ST DNA array.

2012-09-11 | E-GEOD-36664 | biostudies-arrayexpress

Temporal transcriptional profiling of polyamine-depleted NIH3T3 cells

Project description:Polyamines are absolutely required for cell growth and proliferation. While polyamine depletion results in reversible cell cycle arrest, the actual mechanism of growth inhibition is still obscure. This work aimed at determining the cellular processes affected by reduction in the intracellular polyamine levels In order to reveal the general transcriptional responses to polyamine depletion in mammalian cells, NIH3T3 mouse fibroblasts were treated with 1mM L-Difluoromethylornithine (DFMO), G1 cellular fractions were collected by sorting at 0,12, 24, 48 and 96 hours upon addition of the reagent, total RNA was extracted, reverse-transcribed, fragmented, labeled and hybridized to Affymetrix MoGene 1.0 ST DNA array.

2012-09-11 | E-GEOD-36445 | biostudies-arrayexpress

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Gene expression profiling of invasive breast cancer events from the tamoxifen prevention trial

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