Toxics effects of NX and 3ANX toxins compared to DON in intestinal explants
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ABSTRACT:
ORGANISM(S): Sus scrofa
PROVIDER: GSE152763 | GEO | 2022/06/07
REPOSITORIES: GEO
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Project description:Toxics effects of NX and 3ANX toxins compared to DON in intestinal explants
| PRJNA640367 | ENA
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:affy_brachy_2011_11 - affy_brachy_2011_11 - Fusarium graminearum is the causal agent of Fusarium head blight (FHB) of small-grain cereals, including wheat. Besides direct grain losses, this disease is of major concern because of the production by the pathogen of mycotoxins which are hazardous to animals, thus making the grain unfit for food or feed. Major mycotoxins produced by the fungus are trichothecens, including deoxynivalenol (DON). In our laboratory, we use Brachypodium distachyon as a model plant for cereals because of its amenability (short life cycle, numerous genomic and genetic resources, ...). We have recently shown that F. graminearum does induce head blight symptoms on this species and that DON is produced on infected spikes. We have also evidenced that a F. graminearum strain unable to produce DON exhibits reduced virulence on B. distachyon spikes, as previously shown on wheat. The aim of this project is to analyse and compare the plant response to DON producing and non-producing strains of F. graminearum. This analysis will allow to decipher the mechanisms of detoxification set up by the plant and also more specific responses due to the impact of the mycotoxin on plant metabolism and physiology. -Three conditions on B. distachyon spikes: 1-Mock inoculation (Tween 20 0,01%) 2-Inoculation by a F. graminearum wild-type strain 3-Inoculation by a F. graminearum mutant strain, unable to produce DON Spikes were point inoculated with 3ul of either Tween 20 0.01%, wild-type strain or mutant strain (300 spores) and incubated for 96 hours. Six inoculated spikes were collected and pooled for each condition and biological replicate. Three independent biological replicates were conducted. 9 arrays - Brachypodium; normal vs disease comparison,time course
2014-09-06 | E-GEOD-50665 | biostudies-arrayexpress
Project description:affy_brachy_2011_11 - affy_brachy_2011_11 - Fusarium graminearum is the causal agent of Fusarium head blight (FHB) of small-grain cereals, including wheat. Besides direct grain losses, this disease is of major concern because of the production by the pathogen of mycotoxins which are hazardous to animals, thus making the grain unfit for food or feed. Major mycotoxins produced by the fungus are trichothecens, including deoxynivalenol (DON). In our laboratory, we use Brachypodium distachyon as a model plant for cereals because of its amenability (short life cycle, numerous genomic and genetic resources, ...). We have recently shown that F. graminearum does induce head blight symptoms on this species and that DON is produced on infected spikes. We have also evidenced that a F. graminearum strain unable to produce DON exhibits reduced virulence on B. distachyon spikes, as previously shown on wheat. The aim of this project is to analyse and compare the plant response to DON producing and non-producing strains of F. graminearum. This analysis will allow to decipher the mechanisms of detoxification set up by the plant and also more specific responses due to the impact of the mycotoxin on plant metabolism and physiology. -Three conditions on B. distachyon spikes: 1-Mock inoculation (Tween 20 0,01%) 2-Inoculation by a F. graminearum wild-type strain 3-Inoculation by a F. graminearum mutant strain, unable to produce DON Spikes were point inoculated with 3ul of either Tween 20 0.01%, wild-type strain or mutant strain (300 spores) and incubated for 96 hours. Six inoculated spikes were collected and pooled for each condition and biological replicate. Three independent biological replicates were conducted.
2014-09-06 | GSE50665 | GEO
Project description:Transcriptional profiling of log and stationary phase S. Typhimurium, comparing untreated controls with Deoxynivalenol treated samples. Each array used labelled cDNA against a common genomic DNA reference. Triplicate arrays were carried out for each of the 4 conditions: untreated log phase, untreated stationary phase, DON treated log phase and DON treated stationary phase
2011-05-20 | E-GEOD-29399 | biostudies-arrayexpress
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:To identify molecular characteristics of WT AM with or without DON stimulation in vitro, we isolated RNA from AMs with various treatments and examined by bulk RNA-seq. We found a large number of gene profiles were altered following DON treatment in WT AMs, suggesting that DON treatment altered the balance of proliferative versus inflammatory genes in AMs, and glutamine metabolism is important in regulating AM self-renewal ability.
2023-12-31 | GSE210076 | GEO
Project description:We employed whole genome gene expression analysis to characterize the intestinal exposure to 5 closely related food contaminants belonging to the type B trichocene mycotoxins groups The few data available on fusarenon-X (FX) do no support derivation of health-based guidance values for this mycotoxin, although preliminary results suggest higher toxicity compared to other regulated trichothecenes. Using histo-morphological analysis and whole-transcriptome profiling, the present study was designed to get a global view of intestinal alterations induced by FX. The well-described trichothecene deoxynivalenol (DON) served as a benchmark. FX exposure induced more severe intestinal histological alterations compared to DON. Intestinal inflammation was the hallmark of the molecular toxicity of DON, but also of FX. The dose-response analysis for FX revealed that benchmark doses for up-regulation of key-inflammatory genes expression were 4 to 45-fold higher than the previously reported ones for DON. Transcriptome analysis revealed that both mycotoxins down-regulated PPAR and LXR-RXR signaling pathways controlling lipid metabolism. Interestingly, several pathways including VDR/RXR activation, ephrin receptor signaling, and GNRH signaling were specific to FX and thus, discriminate the intestinal transcriptomic fingerprint of the two mycotoxins. Altogether, these results demonstrate that FX induces a more potent intestinal inflammation than DON. This study also reveals specific FX-targeted pathways, indicating that the toxicity of DON cannot serve as a benchmark for FX, and that toxicity evaluation of each trichothecene should be conducted separately.
2017-08-18 | GSE97821 | GEO
Project description:NX is a type A trichothecene produced by Fusarium graminearum with limited information on its toxicity. NX is structurally similar to deoxynivalenol (DON), only differing by the lacking keto group at C8. Because of the structural similarity of the two toxins as well as their potential co-occurrence in food and feed, it is of interest to determine the toxicity of this new compound. In this study, we compared the protein composition of the extracellular media of pig intestinal explants (secretome) exposed to 10 µM of DON or NX for 4 h compared with controls. The combination of two complementary quantitative proteomic approaches (a gel-based and a gel-free approach) identified 18 and 23 differentially abundant proteins (DAPs) for DON and NX, respectively, compared to controls. Functional analysis suggested that, whereas DON toxicity was associated with decreased cell viability and cell destruction, NX toxicity was associated with an enrichment of mitochondrial proteins in the secretome. The presence of these proteins may be associated with the already known ability of NX to induce an intestinal inflammation. Overall, our results indicated that DON- and NX-induced changes in the extracellular proteome of intestinal explants are different. The increased leakage/secretion of mitochondrial proteins by NX may be a feature of NX toxicity.
| S-EPMC9325857 | biostudies-literature