Transcriptomic analysis of pig intestinal explants exposed or not to deoxynivalenol
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PROVIDER: PRJNA698790 | ENA |
REPOSITORIES: ENA
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Project description:Intestinal explants from 5-weeks old piglets were exposed 4h to control or 10 µM deoxynivalenol-contaminated cell culture medium. Explants were nitrogen frozen. RNA were extracted, quantified and their quality was checked with Tapestation 4200 device. RNA samples were used to perform a microarray experiment
2021-06-30 | GSE165968 | GEO
Project description:Deoxynivalenol (DON) is a frequent mycotoxin in grains, produced by Fusarium fungi, which demonstre multiple side effects such as modulation of immune responses, reduced feed intake and weight gain or impairment of the intestinal barrier function. Among animal species, pigs are the best model for humans and are very sensitive to DON. In wheat, DON can be conjugated to glucose to form DON-3-β-D-glucoside (D3G). Some bacteria isolated from digestive tracts or soil, are also able to de-epoxydize or epimerize DON to metabolites such as deepoxy-deoxynivalenol (DOM-1) or 3-epi-deoxynivalenol (epi-DON). The toxicity of these DON metabolites is poorly documented. By the way of ingestion, the intestine is the first organ exposed to these molecules and so constitute a relevant model. The aim of this study was to compare the intestinal toxicity of three DON metabolites (D3G, DOM-1 and epi-DON) with the one of DON. Intestinal explants from 6 pigs were treated with 10mM DON, D3G, DOM-1 or epi-DON for 4 hours and transcriptomic analysis was performed using an âAgilent Porcinet 60Kâ. Jejunal explants from 4 piglets aged of 5 weeks were sampled and exposed in vitro to differents molecules (DON, D3G, DOM-1 & 3-epi-DON) at 10µM during 4h. Then RNA was extracted.
2016-07-20 | E-GEOD-66918 | biostudies-arrayexpress
Project description:Deoxynivalenol (DON) is a frequent mycotoxin in grains, produced by Fusarium fungi, which demonstre multiple side effects such as modulation of immune responses, reduced feed intake and weight gain or impairment of the intestinal barrier function. Among animal species, pigs are the best model for humans and are very sensitive to DON. In wheat, DON can be conjugated to glucose to form DON-3-β-D-glucoside (D3G). Some bacteria isolated from digestive tracts or soil, are also able to de-epoxydize or epimerize DON to metabolites such as deepoxy-deoxynivalenol (DOM-1) or 3-epi-deoxynivalenol (epi-DON). The toxicity of these DON metabolites is poorly documented. By the way of ingestion, the intestine is the first organ exposed to these molecules and so constitute a relevant model. The aim of this study was to compare the intestinal toxicity of three DON metabolites (D3G, DOM-1 and epi-DON) with the one of DON. Intestinal explants from 6 pigs were treated with 10mM DON, D3G, DOM-1 or epi-DON for 4 hours and transcriptomic analysis was performed using an “Agilent Porcinet 60K”.
2016-07-20 | GSE66918 | GEO
Project description:pig intestinal microbiota Raw sequence reads
| PRJNA475422 | ENA
Project description:Pig intestinal digesta Raw sequence reads
| PRJNA1025323 | ENA
Project description:To investigate the possible toxics effects of newly discovered mycotoxins NX and 3ANX and compare with the known effects of DON, we performed a microarray to study their effects on expression profile of intestinal explants
2022-06-07 | GSE152763 | GEO
Project description:Here we analysed different mechanisms of apical and basolateral deoxynivalenol (DON) toxicity reflected in the gene expression. We used the jejunum derived, polarized intestinal porcine epithelial cell line IPEC‑J2 as an in vitro cell culture model. Luminal and blood stream DON intoxication was mimicked by a DON application from the apical or basolateral compartment of ThinCert® membrane inserts for 72 h.
2012-12-31 | GSE33246 | 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-?, 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:pig intestinal mucosa-associated microbiota Metagenome
| PRJNA524979 | ENA
Project description:Here we analysed different mechanisms of apical and basolateral deoxynivalenol (DON) toxicity reflected in the gene expression. We used the jejunum derived, polarized intestinal porcine epithelial cell line IPECM-bM-^@M-^QJ2 as an in vitro cell culture model. Luminal and blood stream DON intoxication was mimicked by a DON application from the apical or basolateral compartment of ThinCertM-BM-. membrane inserts for 72M-BM- h. We compared the genome wide gene expression of untreated and DON-treated IPEC-J2 cells by the GeneChipM-BM-. Porcine Genome Array of Affymetrix.
2012-12-31 | E-GEOD-33246 | biostudies-arrayexpress