Dexamethasone treatment of gut cells
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE1826 | GEO | 2004/10/08
SECONDARY ACCESSION(S): PRJNA90393
REPOSITORIES: GEO
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Project description:Reference pool RNA versus RNA from dexamethasone treated gut cells.
2010-06-05 | E-GEOD-1826 | biostudies-arrayexpress
Project description:determine genes regulated by dexamethasone in c3h10t1/2 cells after 90 minutes of treatment compared to vehicle Keywords: treatment comparison microarray c3h10t1/2 cells were treated with vehicle or 1uM dexamethasone for 90 minutes (3 biological replicates of each) RNA samples were isolated from RNeasy kit (Qiagen) hybridized all samples to a pool of RNA from vehicle and treated c3h10t1/2 cells
2010-05-25 | E-GEOD-10900 | biostudies-arrayexpress
Project description:Sixteen male Sprague-Dawley rats were randomly allocated into 2 groups (8 rats per group) as follows: the control group (CON) and the dexamethasone-treated group (DEXA). Dexamethasone-treated rats received a daily intraperitoneal injection of 1.5 mg/kg of dexamethasone for 5 days. All rats were fasted during the night following the fifth day. On the sixth day, the animals were killed by decapitation. In order to focus our investigation on metabolism-related genes, we developed a metabolism dedicated microarray tool: the Mitoligo. Using this microarray tool, we were able to determine that energy metabolism was deeply modified by dexamethasone treatment. Dexamethasone treatment to rats induces a complete switch of the metabolism toward a maximal rate of ATP synthesis. In this study, we show that substrate supplying for oxidative phosphorylation is greatly enhanced. We also confirm that oxidative phosphorylation capacity is increased by dexamethasone treatment. Keywords: hormonal treatment
2008-01-13 | GSE9035 | GEO
Project description:determine genes regulated by dexamethasone in c3h10t1/2 cells after 90 minutes of treatment compared to vehicle Keywords: treatment comparison microarray
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Project description:Specific microbial signals induce the differentiation of a distinct pool of RORγ+ regulatory T cells (Tregs) crucial for intestinal homeostasis. We discovered highly analogous populations of microbiota-dependent Tregs that promote tissue regeneration at extra-gut sites, notably acutely injured skeletal muscle and fatty liver. Tissue damage elicited the emigration of RORγ+ Tregs from the gut to compromised tissues, wherein they regulated the dynamics and tenor of early inflammation and helped balance the proliferation versus differentiation of local stem cells. Reining in IL-17A-producing T cells was a major mechanism underlying these rheostatic functions. Our findings highlight the importance of gut-trained Treg emissaries in controlling the response to sterile injury of non-mucosal tissues.
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Project description:RNA sequencing (RNA-seq) was used to identify early transcriptomic responses of Y-1 cells to the dexamethasone treatment.
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Project description:60 fresh frozen HNSCC from the University of North Carolina at Chapel Hill (UNC) were obtained from the UNC Tissue Procurement Facility under an IRB approved protocol. 55 tumor samples were collected from the primary tumor and five tumor samples were collected from a local recurrence at the primary site; one tumor also had a sample of the primary tumor and an associated lymph node metastasis . In addition, we profiled three normal tonsillar epithelium samples that were collected from three pediatric patients following routine tonsillectomy and four HNSCC tumor derived cell lines (UNC7, UMSCCA1, CAL27 and JHU022). Each experimental sample (tumor, normal or cell line) was assayed versus a “common reference” sample that was a pool of total RNA derived from 30 of the HNSCC samples. This tumor pool reference strategy has been successfully used in another profiling study. In total, 78 experiments were performed, which utilized three separate preparations of the common reference pool. Keywords = Head and neck cancer Keywords = gene expression profiles Keywords = microarray Keywords: parallel sample
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Project description:16S amplicon pool analyses of the four gut sections of the wood-feeding beetle, Odontotaenius disjunctus The beetle is purely wood feeding, and we aim to first characterize the community that exist within the gut sections 4 beetles, four gut sections per beetle, one PhyloChip per gut section, total = 16 chips
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Project description:Specific microbial signals induce the differentiation of a distinct pool of RORγ+ regulatory T cells (Tregs) crucial for intestinal homeostasis. We discovered highly analogous populations of microbiota-dependent Tregs that promote tissue regeneration at extra-gut sites, notably acutely injured skeletal muscle and fatty liver. Tissue damage elicited the emigration of RORγ+ Tregs from the gut to compromised tissues, wherein they regulated the dynamics and tenor of early inflammation and helped balance the proliferation versus differentiation of local stem cells. Reining in IL-17A-producing T cells was a major mechanism underlying these rheostatic functions. Our findings highlight the importance of gut-trained Treg emissaries in controlling the response to sterile injury of non-mucosal tissues.
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Project description:Investigation of whole genome gene expression level changes in Mus musculus 3B4.15 T hybridoma cells treated with 1microMolar Dexamethasone compared to mock treated cells. Interleukin-7 receptor alpha (IL-7Rα) is essential for T cell survival and differentiation. Glucocorticoids are potent enhancers of IL-7Rα expression with diverse roles in T cell biology. Here we identify the transcriptional repressor, Growth factor independent-1 (Gfi1), as a novel intermediary in glucocorticoid-induced IL-7Rα upregulation. We found Gfi1 to be a major inhibitory target of dexamethasone by microarray expression profiling of 3B4.15 T-hybridoma cells. Concordantly, retroviral transduction of Gfi1 significantly blunted IL-7Rα upregulation by dexamethasone. To further assess the role of Gfi1 in vivo, we generated bacterial artificial chromosome (BAC) transgenic mice, in which a modified Il7r locus expresses GFP to report Il7r gene transcription. By introducing this BAC reporter transgene into either Gfi1-deficient or Gfi1-transgenic mice, we document in vivo that IL-7Rα transcription is upregulated in the absence of Gfi1 and downregulated when Gfi1 is overexpressed. Strikingly, the in vivo regulatory role of Gfi1 was specific for CD8+, and not CD4+ T cells or immature thymocytes. These results identify Gfi1 as a specific transcriptional repressor of the Il7r gene in CD8 T lymphocytes in vivo. A six chip study using total RNA recovered from three separate flasks of mock treated 3B4.15 cells and three separate flasks of Dexamethasone treated 3B4.15 cells . Each chip measures the expression level of 44170 target genes
2012-07-12 | E-GEOD-39296 | biostudies-arrayexpress