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Genome-wide analysis of IFNa response in WT and STAT3KO MEFs

ABSTRACT: Analysis of gene expression profiles in MEF cell lines in the absence or presence of STAT3 following IFNa stimulation. This study is to unveil possible role of STAT3 during type I IFN-mediated gene induction and functions. Total RNA obtained from WT or STAT3KO MEFs stimulated without or with IFNa 1000 U/ml for 2 h.

ORGANISM(S): Mus musculus

SUBMITTER: Chien-Kuo Lee

PROVIDER: E-GEOD-25044 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Genome-wide analysis of IFNa response in WT and STAT3KO MEFs

Project description:Analysis of gene expression profiles in MEF cell lines in the absence or presence of STAT3 following IFNa stimulation. This study is to unveil possible role of STAT3 during type I IFN-mediated gene induction and functions.

2010-11-04 | GSE25044 | GEO

Gene expression changes in mouse embryonic fibroblasts (MEF cells) deficient for Ing1 and Gadd45a

Project description:ING1b and GADD45a are nuclear proteins involved in the regulation of cell growth, apoptosis and DNA repair. We found that ING1b and GADD45a physically and functionally interact in the epigenetic regulation of specific target genes. In order to study this interaction further, we analysed the transcriptional changes in MEF cells from single and double Ing1/Gadd45 knockout mice via microarray profiling. Mouse embryonic fibroblasts (MEF cells) were isolated from embryonic day E15.5 male embryos, either wild-type (WT) or knockout for Ing1 (Ing1-/-), Gadd45a (Gadd45a-/-) or Ing1/Gadd45a (double knockout, DKO), and cultured for 3 passages. Samples were then collected in duplicates per MEF line for expression array profiling.

2013-02-04 | E-GEOD-43318 | biostudies-arrayexpress

IFNa dose response in primary murine B cells

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Gene expression analysis of Unstimulated follicular B cells and follicular B cells stimulated with IFNa, CpG and CpG plus IFNa.

Project description:We report the grobal gene expression in follicular (FO) B cells stimulated with CpG, IFNa, and CpG plus IFNa for 12 hours prior to the onset of PC differentiation. We found that stimulation with CpG plus IFNa upregulates metabolic processes compared to stimulation with CpG alone. This study highlight the pivotal role of IFNa in determining the fate of PC differentiation of TLR9-activated FO B cells.

2024-04-22 | GSE244442 | GEO

Growth factor stimulation of cardiomyocytes induces changes in the transcriptional contents of secreted exosomes

Project description:To study if the transcriptional content in exosomes derived from unntreated and growth factor treated cultured cardiomyocytes (HL-1) differ and if so, can this difference be explained.This is results for the cells.The exosome reults can be find at GSE40503. 4 control untreated samples, 4 TFG-beta2 cardiomyocyte treated samples and 4 PDGF BB cardiomyocyte were studied., this reults are from the corresponding cells (that released the exosomes), used for data filtering of the exsomedata. The exosome reults can be find at GSE40503.

2013-06-20 | E-GEOD-45207 | biostudies-arrayexpress

Gene Expression in the Human Mammary Epithelium in response to consumption of high fat (H-FAT) and high carbohdyrate (H-CHO) diets.

Project description:Mammary gland (MG) de novo lipogenesis contributes significantly to milk fat in animals but little is known in humans. We hypothesized that de novo lipogenesis, as reflected by incorporation of 13C carbons from [U-13C]glucose into fatty acids (FAs) and glycerol in triglycerides (TG), will be greater: a. in milk than plasma TG, b. during a high carbohydrate (H-CHO) diet than high fat (H-FAT) diet and c. during feeding than fasting. Healthy lactating women were studied on two isocaloric, isonitrogenous diets. On one occasion subjects received diets containing H-FAT or H-CHO diet for 1 week. Incorporation of 13C from infused [U-13C]glucose into FAs and glycerol was measured using GC/MS methodology and gene expression using RNA isolated from breast milk fat globule (MFG). Incorporation of 13C2 into milk FAs, increased with increased chain length of the FAs from C2:0 to C12:0 but progressively declined in C14:0 and C16:0 and was not detected in FAs >C16. During feeding, regardless of diets, enrichment of 13C2 in milk FA and 13C3 in milk glycerol were ~3 and ~7 fold higher compared to plasma FA and glycerol, respectively. Following an overnight fast during H-CHO and H-FAT diets study periods, 25% and 6%, respectively, of medium chain FAs (MCFAs, C6-C12) were derived from glucose but increased to 75% and 25% with feeding. The expression of genes involved in FA or glycerol synthesis pathways was unchanged regardless of diet or fast-fed conditions. Conclusions: The human MG is capable of de novo lipogenesis, of primarily MCFAs and glycerol, which is influenced by the macro-nutrient composition of the maternal diet. On day 7 of consumption of each of the two diets milk samples collected from 7 healthy, lean, exclusively breastfeeding women following an overnight fast and feeding conditions [7 x 2 x 2 = 28 samples] were processed for isotope enrichments and RNA isolation from the milk fat globules. The total RNA was utilized for microarray analyses.

2014-05-19 | E-GEOD-51874 | biostudies-arrayexpress

IFNa dose response in primary murine B cells

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Transcriptome-guided functional analyses reveal novel biological properties and regulatory heirarchy of human embryonic stem cell derived ventricular cardiomyocytes.

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2013-09-10 | E-GEOD-50704 | biostudies-arrayexpress

Cell specific response to IFNa

Project description:We report cell specific responses to IFNa in 11 different peripheral immunocyte populations in the mouse. These cells represent the core ImmGen immunocyte lineage panel. Profiles from these were used to analyze cell specific responses to IFNa. In general a core set of ISG transcripts are induced in all cells. Smaller sets of ISGs were induced in a cell specific manner. In particular, splenic granulocytes and dendritic cells show restriced indcution of sets of ISGs.

2015-11-20 | GSE75202 | GEO

Predominance of MAPK reactivation in early resistance to debrafenib/trametinib combination therapy of BRAF mutant metastatic melanoma.

Project description:One third of BRAF-mutant metastatic melanoma patients treated with combined BRAF and MEK inhibition progress within six months. Treatment options for these patients remain limited. Here we analyse twenty BRAFV600 mutant melanoma metastases derived from 10 patients treated with the combination of debrafenib and trametinib for resistance mechanisms and genetic correlates of response. Resistance mechanisms are identified in 9/11 progressing tumors and MAPK reactivation occurred in 9/10 tumors, commonly via BRAF amplification and mutations activating NRAS and MEK2. Our data confirming that MEK2C125S, but not the synonymous MEK1C121S protein confers resistance to combination therapy, highlight the functional differences between these kinases and the preponderance of MEK2 mutations in combination therapy-resistant melanomas. Exome sequencing did not identify additional progression-specific resistance candidates. Nevertheless, most melanomas carried additional oncogenic mutations at baseline (e.g. RCA1 and AKT3) that activate the MAPK and P13K pathways and are thus predicted to diminish response to MAPK inhibitors. Total RNA obtained from fresh frozen melanoma tumors treated with a combination of dabrafenib and trametinib

2014-12-03 | E-GEOD-61992 | biostudies-arrayexpress

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