Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA101407 | ENA |
REPOSITORIES: ENA
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Project description:5-Azacytidine or 5-aza-2â??-deoxycytidine is a chemical analogue of the cytosine nucleoside used in DNA and RNA. Cells in the presence of 5-azacytidine incorporate it into DNA during replication and RNA during transcription. The incorporation of 5-azacytidine into DNA or RNA inhibits methyltransferase thereby causing demethylation in that sequence, affecting the way that cell regulation proteins are able to bind to the DNA/RNA substrate. Inhibition of DNA occurs through the formation of stable complexes between the molecule and with DNA methyltransferases, thereby saturating the cells methylation machinery. 5-azacytidine is mainly used in the treatment of myelodysplastic syndrome. Changes in gene expression levels in Erbb2 transfected murine fibroblast cell line after treatment with Azacytidine in two different concentrations were analysed. Keywords: cDNA microarray, murine fibroblast, azacytidine treatment, carcinogenesis Gene expression levels of Erbb2 transfected NIH3T3 cell lines treated with 5µM and 10µM Azacytidine were compared to Erbb2 transfected but non-treated NIH3T3 cell line. For each Azacytidine concentration 4-8 experiments were performed including 50% dye swaps. As a controll experiments gene expression levels of NIH3T3 cells with and without Azacytidine treatment were analysed
2009-10-01 | E-GEOD-8374 | biostudies-arrayexpress
Project description:Gene regulation in Erbb2 transfected NIH3T3 cells using tet-off system
| PRJNA101405 | ENA
Project description:5-Azacytidine or 5-aza-2’-deoxycytidine is a chemical analogue of the cytosine nucleoside used in DNA and RNA. Cells in the presence of 5-azacytidine incorporate it into DNA during replication and RNA during transcription. The incorporation of 5-azacytidine into DNA or RNA inhibits methyltransferase thereby causing demethylation in that sequence, affecting the way that cell regulation proteins are able to bind to the DNA/RNA substrate. Inhibition of DNA occurs through the formation of stable complexes between the molecule and with DNA methyltransferases, thereby saturating the cells methylation machinery. 5-azacytidine is mainly used in the treatment of myelodysplastic syndrome. Changes in gene expression levels in Erbb2 transfected murine fibroblast cell line after treatment with Azacytidine in two different concentrations were analysed. Keywords: cDNA microarray, murine fibroblast, azacytidine treatment, carcinogenesis
2009-10-01 | GSE8374 | GEO
Project description:Murine NIH3T3 Cells: Wild vs. BRAFV600E Transfected
| PRJNA355117 | ENA
Project description:V-erb-b2 erythroblastic leukemia viral oncogene homolog 2 (ERBB2; synonyms HER2, NEU) encodes a transmembrane glycoprotein with tyrosine kinase-specific activity that acts as a major switch in different signal-transduction processes. ERBB2 amplification and overexpression have been found in a number of human cancers, including breast, ovary and kidney carcinoma. Our aim was to detect ERBB2-regulated target genes regulated in Erbb2 transfected murine fibroblast cells after tetracycline treatment to stop the overexpression of ERBB2. Changes in gene expression patterns in these cells after the switch-off of Erbb2 expression was analysed after 8 different periods of time after the treatement (1h-7d). Identification of co-regulated genes and in cluster analysis were performed. Keywords: Erbb2, cDNA microarrays, murine fibroblasts, gene expression levels of 8 different measurements after tetracycline treatment (1h, 2h, 4h, 12h, 24h, 3d, 5d and 7d) were compared to the non-treated NIH3T3 cell line. As control two different untreated NIH3T3 cell line were ananysed. For all comparisons 4 experiments have been performed including 2 dye swaps.
2009-09-01 | E-GEOD-8373 | biostudies-arrayexpress
Project description:Genome-wide maps of H3K27 state in transfected NIH3T3 cells.
| PRJNA359491 | ENA
Project description:V-erb-b2 erythroblastic leukemia viral oncogene homolog 2 (ERBB2; synonyms HER2, NEU) encodes a transmembrane glycoprotein with tyrosine kinase-specific activity that acts as a major switch in different signal-transduction processes. ERBB2 amplification and overexpression have been found in a number of human cancers, including breast, ovary and kidney carcinoma. Our aim was to detect ERBB2- regulated target genes that contribute to its tumorigenic effect on a genomewide scale. The differential gene expression profile of ERBB2- transfected and wild-type mouse fibroblasts was monitored employing DNA microarrays. Regulated expression of selected genes was verified by RT-PCR and validated by Western blot analysis. Genomewide gene expression profiling identified (i) known targets of ERBB2 signaling, (ii) genes implicated in tumorigenesis but so far not associated with ERBB2 signaling as well as (iii) genes not yet associated with oncogenic transformation, including novel genes without functional annotation. We also found that at least a fraction of coexpressed genes are closely linked on the genome. ERBB2 overexpression suppresses the transcription of antiangiogenic factors (e.g., Sparc, Timp3, Serpinf1) but induces expression of angiogenic factors (e.g., Klf5, Tnfaip2, Sema3c). Profiling of ERBB2-dependent gene regulation revealed a compendium of potential diagnostic markers and putative therapeutic targets. Identification of coexpressed genes that colocalize in the genome may indicate gene regulatory mechanisms that require further study to evaluate functional coregulation. Erbb2 transfected NIH3T3 cells versus un-transfected cells, 4 technical replicates including two colour swap experiments
2010-06-25 | E-GEOD-16445 | biostudies-arrayexpress
Project description:Translatome of NIH3T3 cells: control vs. stress treatment
| PRJNA152879 | ENA
Project description:Transcriptional profiling of mouse NIH3T3 cells comparing control NIH3T3 cells transfected with a pEFm6-BRAF with cells transfected with pEFm6-BRAFV600E. Goal was to determine the effects of BRAFV600E gene transfection on global mouse NIH3T3 cells gene expression.
2017-01-01 | GSE90589 | GEO