E-GEOD-23630
Ontology highlight
ABSTRACT:
OTHER RELATED OMICS DATASETS IN: PRJNA129929
PROVIDER: E-GEOD-23630 | ExpressionAtlas | 2025-01-24
REPOSITORIES: ExpressionAtlas
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| E-GEOD-23630-analysis-methods.tsv | Tabular | |||
| E-GEOD-23630-atlasExperimentSummary.Rdata | Rdata | |||
| E-GEOD-23630-configuration.xml | Xml | |||
| E-GEOD-23630-percentile-ranks.tsv | Tabular | |||
| E-GEOD-23630.condensed-sdrf.tsv | Tabular |
Items per page: 5 1 - 5 of 88 |
Similar Datasets
Project description:Background: In the last decade, much attention has been drawn to probiotic bacteria in the context of inflammatory bowel disease (IBD), since the potential of certain strains to attenuate inflammation was demonstrated in several animal experiments and clinical studies. Data in humans elucidating the molecular mechanism of probiotic action are still scarce. To this end, we used an organ culture system of human colon mucosa and investigated the gene expression profiles after treatment with different probiotic bacteria in phorbol 12-myristate 13-acetate (PMA)/ionomycin (IO)) stimulated samples using whole genome microarrays. Moreover, we analyzed changes occurring in the intestinal explants cultured for 8 hours when compared to fresh, directly frozen mucosa, in order to infer the suitability of the system to study an inflammatory stimulus and likely antiinflammatory responses. Results: Culturing intestinal colon fragments during 8 hours elicited differential gene expression in 283 genes, 229 upregulated and 54 downregulated. Upregulated genes were predominantly related to apoptosis, whereas downregulated genes encoded mitochondrial proteins. No specific enrichment of genes related to inflammation or immune response could be detected, confirming the suitability of the system to further study the inmunomodulatory/anti-inflammatory properties of Lactobacillus casei BL23 (BL23), L.plantarum 299v (LP299v) and L.plantarum 299v (A-) (LP299v (A-)), a mutant strain with reduced adhesive properties to enterocytes. Intestinal explants were stimulated with PMA/IO for 3 hours and subsequently incubated with probiotic bacteria for 4 h. ANOVA analysis (p ? 0,01) revealed 205 differentially expressed genes between Control, PMA/IO (Inflamed), and the 3 bacterial treatments. Most importantly, a number of PMA/IO induced genes related to immune response and immune system process such as IL-2, IFN-?, IL17A and pro-inflammatory cytokines CXCL9 and CXCL11 were downregulated by BL23, LP299v and LP299v (A-). The behaviour of the three Lactobacillus strains was quite similar, although their presence induced differential expression of a small number of genes in a strain dependent manner. Conclusion: The human colon organ culture was found to be a suitable model for the study of inflammatory/anti-inflammatory stimuli, and therefore it constitutes a valuable tool to determine the inmunomodulatory effect of probiotic bacteria. The global transcriptional profile evoked by strains BL23, LP299v and LP299v (A-) in artificially inflamed tissue indicated a clear homeostasis restoring effect, including a decrease of the signals produced by activated T cells. Macroscopically healthy colonic intestinal tissue was obtained at surgery from 3 patients. Intestinal explants were treated with PMA and ionomycin for 3 h to induce pro-inflammatory conditions. Then, culture medium was changed and replaced with either medium or medium containing either Lactobacillus casei BL23, Lactobacillus plantarum 299v, or a nonadherent mutant of L. plantarum 299v (A-) and incubated for further 4 hours. In parallel, control intestinal explants were cultured without any treatment of PMA/ionomycin or probiotic bacteria and compared to directly frozen tissue in order to evaluate changes in gene expression which are due solely to the culture conditions.
2012-06-19 | E-GEOD-23630 | biostudies-arrayexpress
Project description:Gene expression profiling was analyzed using A549 cells that were treated with glucose deprivation (GD) or GD + phorbol-12-myristate-13-acetate (PMA).
2013-09-16 | GSE24271 | GEO
Project description:Background: In the last decade, much attention has been drawn to probiotic bacteria in the context of inflammatory bowel disease (IBD), since the potential of certain strains to attenuate inflammation was demonstrated in several animal experiments and clinical studies. Data in humans elucidating the molecular mechanism of probiotic action are still scarce. To this end, we used an organ culture system of human colon mucosa and investigated the gene expression profiles after treatment with different probiotic bacteria in phorbol 12-myristate 13-acetate (PMA)/ionomycin (IO)) stimulated samples using whole genome microarrays. Moreover, we analyzed changes occurring in the intestinal explants cultured for 8 hours when compared to fresh, directly frozen mucosa, in order to infer the suitability of the system to study an inflammatory stimulus and likely antiinflammatory responses. Results: Culturing intestinal colon fragments during 8 hours elicited differential gene expression in 283 genes, 229 upregulated and 54 downregulated. Upregulated genes were predominantly related to apoptosis, whereas downregulated genes encoded mitochondrial proteins. No specific enrichment of genes related to inflammation or immune response could be detected, confirming the suitability of the system to further study the inmunomodulatory/anti-inflammatory properties of Lactobacillus casei BL23 (BL23), L.plantarum 299v (LP299v) and L.plantarum 299v (A-) (LP299v (A-)), a mutant strain with reduced adhesive properties to enterocytes. Intestinal explants were stimulated with PMA/IO for 3 hours and subsequently incubated with probiotic bacteria for 4 h. ANOVA analysis (p ≤ 0,01) revealed 205 differentially expressed genes between Control, PMA/IO (Inflamed), and the 3 bacterial treatments. Most importantly, a number of PMA/IO induced genes related to immune response and immune system process such as IL-2, IFN-γ, IL17A and pro-inflammatory cytokines CXCL9 and CXCL11 were downregulated by BL23, LP299v and LP299v (A-). The behaviour of the three Lactobacillus strains was quite similar, although their presence induced differential expression of a small number of genes in a strain dependent manner. Conclusion: The human colon organ culture was found to be a suitable model for the study of inflammatory/anti-inflammatory stimuli, and therefore it constitutes a valuable tool to determine the inmunomodulatory effect of probiotic bacteria. The global transcriptional profile evoked by strains BL23, LP299v and LP299v (A-) in artificially inflamed tissue indicated a clear homeostasis restoring effect, including a decrease of the signals produced by activated T cells.
2012-06-20 | GSE23630 | GEO
Project description:Transcriptome analysis of the human monocytic cell line THP1 (ATCC TIB-202) treated or not with phorbol myristate acetate (PMA) +/- lipopolysaccharides-lipopolysaccharides binding protein (LPS-LBP)
2018-07-17 | GSE117162 | GEO
Project description:Here we profile nascent transcription, RNA polymerase III occupancy, chromatin accessibility, and H3K27ac levels in THP-1 monocytes and THP-1 derived macrophages after 72 hr exposure to phorbol myristate acetate (PMA).
2017-03-29 | GSE96800 | GEO
Project description:U937 cells, human lyphoma cell line, differentiate to the macrophage-like cells by the phorbol 12-myristate 13-acetate (PMA). We investigated the regulation mechanisms of gene expression during the U937 differentiation by RNA-seq.
2020-11-30 | GSE155459 | GEO
Project description:Expression profiling was done of exposure to phorbol myristate acetate -PMA and FOXK2 depletion by siRNA transfection. This was done on the human osteosarcoma U2OS cell line which stably expresses FOXK2. PMA is an inducer of AP1 activity.
2011-11-03 | E-MEXP-3107 | biostudies-arrayexpress
Project description:Gene expression profiling was analyzed using A549 cells that were treated with glucose deprivation (GD) or GD + phorbol-12-myristate-13-acetate (PMA). Gene expression levels were determined by comparing the gene expression of the experimental samples (GD or GD+PMA) with that of the control sample.
2013-09-16 | E-GEOD-24271 | biostudies-arrayexpress
Project description:MiRNAs play pivotal roles in regulating macrophage functions, including differentiation, polarization, recruitment, and activation of inflammation. in this review, to provide novel insight into macrophage differentiation-specific mitomiR signatures and associated mitochondrial pathways, we performed a global miRNA profiling on extracted mitochondria and total cell content of human macrophages. The THP-1 monocytic cell line was treated with phorbol-12-myristate-13-acetate (PMA) to induce differentiation into macrophages The human monocytic cell line THP-1 cells were differentiated into THP-1 derived macrophages with 40 ng/mL phorbol 12-myristate 13-acetate (PMA),The mitochondrial fraction of the cells were enriched and purified using anti-TOM22 microbeads (Miltenyi Biotec). After total RNA extraction, and using Taqman low-density arrays (TLDA), we performed the global miRNA profiling on extracted mitochondria and compared with total cell content
2021-12-02 | GSE182255 | GEO
Project description:So far, we have found phorbol 12-myristate 13-acetate (PMA) induced ubiquitin specific peptidase (USP) 2b isoform in myeloid leukemia cell lines such as HL60, THP-1, and U937. HL60, THP-1, and U937 undergoes differentiation into macrophage-like cells after stimulation with phorbol ester. To explore molecular function of USP2 in macrophages especially during lipopolysaccharide(LPS) response, we assess expression profiles of HL60-derivatives continuously expressing shRNA for USP2 and control shRNA.
2018-02-25 | GSE21004 | GEO