Dendritic cells are the initiators of the adaptive immune response, therefore its gene expression allow us to predict the responses to vaccination. We used bone marrow derived dendritic cells (BMDC) to analyze the gene expression that result from the exposure to adjuvants. We use model antigen OVA and cyclic di-AMP (CDA) as an adjuvant in order to characterize the genes involved in the activation of dendritic cells by CDA alone or when the antigen is present.
Type I IFN and not TNF, is Essential for Cyclic Di-nucleotide-elicited CTL by a Cytosolic Cross-presentation Pathway.
Treatment, Time
View SamplesThe PA0336 protein from Pseudomonas aeruginosa belongs to the family of widely distributed Nudix pyrophosphohydrolases which catalyze the hydrolysis of pyrophosphate bonds in a variety of nucleoside diphosphate derivatives. The amino acid sequence of the PA0336 protein is highly similar to that of the RppH Nudix RNA pyrophosphohydrolase from E. coli which removes pyrophosphate from 5'-end of triphosphorylated RNA transcripts. Trans-complementation experiments showed that the P. aeruginosa enzyme can functionally substitute for RppH in E. coli cells indicating that, similarly to RppH, the Pseudomonas hydrolase mediates RNA turnover in vivo. In order to elucidate the biological significance of the PA0336 protein in Pseudomonas cells, a PA0336 mutant strain was constructed. The mutated strain considerably increased level of the virulence factor pyocyanin compared to wild type, suggesting that PA0336 could be involved in down-regulation of P. aeruginosa pathogenicity. This phenotype was reversed by complementation with the wild type, but not catalytically inactive PA0336, indicating that the catalytic activity was indispensable for its biological function. To study the role of PA0336 further, transcriptomes of the PA0336 mutant and the wild type strain were compared using RNA sequencing. The cellular level of a number of transcripts was affected by the lack of PA0336. We focused our attention on pathogenesis-related genes. Up-regulated in the PA0336 mutant were transcripts coding for, i. a., proteins involved in the regulation and/or production of pyocyanin, biofim-associated alginates and exotoxins. The results from the global analysis were verified by determining the cellular level of chosen transcripts by quantitative RT-PCR method. Pathogenesis tests in Caenorhabditis elegans showed that the PA0336 mutant of P. aeruginosa was significantly more virulent than the parental strain, confirming further that the P. aeruginosa RNA pyrophosphohydrolase PA0336 modulates bacterial pathogenesis by down-regulating production of virulence factors. Overall design: Study comparing RNA expression of P. aeruginosa PA0336 mutant strain with wild type reference, both in biological triplicates, by RNA-seq performed on Ion Torrent Proton platform
Nudix-type RNA pyrophosphohydrolase provides homeostasis of virulence factor pyocyanin and functions as a global regulator in Pseudomonas aeruginosa.
Cell line, Subject
View SamplesExercise induces skeletal muscle adaptation, and the p38 mitogen-activated protein kinase signaling pathway is thought to play an important role in the adaptive processes. We have obtained new evidence that the gamma isoform of p38 is required for exercise-induced metabolic adaptation in skeletal muscle; however, the neuromuscular activity-dependent target genes of p38gamma remain to be defined.
p38gamma mitogen-activated protein kinase is a key regulator in skeletal muscle metabolic adaptation in mice.
Age, Specimen part
View SamplesThe thymic microenvironment is essential for proper differentiation and selection of thymocytes.Thymic involution in aged mice results in decreased T cell output and immune function. Here we use gene expression profiling of FACS sorted thymic stromal subsets to identify molecular mediators of thymocyte: stromal cell interactions, as well as gene expression changes thymic stromal subsets during early stages of thymic involution .
Global transcriptional profiling reveals distinct functions of thymic stromal subsets and age-related changes during thymic involution.
Sex, Age, Specimen part, Disease, Disease stage
View SamplesRecognition and removal of apoptotic cells by professional phagocytes, including dendritic cells and macrophages, preserve self-tolerance and prevent chronic inflammation and autoimmune pathologies. However the diverse array of phagocytes residing within different tissues combined with the necessarily prompt nature of apoptotic cell clearance has made it difficult to study this process in situ. Thus, the full spectrum of functions executed by tissue resident phagocytes in response to homeostatic apoptosis remains unclear.
Different tissue phagocytes sample apoptotic cells to direct distinct homeostasis programs.
Sex, Specimen part
View SamplesGene expression and copy number variation arrays for parental GTL16 and GTL16 clones resistant to c-Met inhibitor.
A novel SND1-BRAF fusion confers resistance to c-Met inhibitor PF-04217903 in GTL16 cells through [corrected] MAPK activation.
Cell line
View SamplesKnockdown of mutant and/or wild-type SF3B1 in MEL202 cell line by Degron knock-in, followed by RNA-seq, to identify splicing events governed by mutant SF3B1. Overall design: Control: parental MEL202 cell line. Experiments: mutant-SF3B1 knockdown; wildtype-SF3B1 knockdown; mutant SF3B1 knockout. Treatments: each of these four conditions plus and minus shld.
A chemical genetics approach for the functional assessment of novel cancer genes.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Interplay of host microbiota, genetic perturbations, and inflammation promotes local development of intestinal neoplasms in mice.
Specimen part
View SamplesThe preferential localization of some neoplasms, such as serrated polyps, in specific areas of the intestine suggests that non-genetic factors may be important for their development. To test this hypothesis, we took advantage of transgenic mice that expressed HB-EGF throughout the intestine, but develop serrated polyps only in the cecum.
Interplay of host microbiota, genetic perturbations, and inflammation promotes local development of intestinal neoplasms in mice.
Specimen part
View SamplesHuman alveolar epithelial cells were exposed to cigarette smoke extract (CSE) for 1, 3 and 5 weeks at 1%, 5% and 10%, and gene expression was evaluated by complete transcriptome microarrays.
Cigarette Smoke Enhances the Expression of Profibrotic Molecules in Alveolar Epithelial Cells.
Cell line, Time
View Samples