Atypical Salmonella Enteritidis persistent infection
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REPOSITORIES: ENA
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Project description:White leghorn layers were infected with Salmonella Enteritidis. The cecum were collected at 7 days post infection for total RNA isolation. The significantly expressed microRNAs between infected and non-infected chickens were identified through Solexa sequencing technology.
2017-03-08 | GSE59748 | GEO
Project description:Salmonella Entertidis (SE) causes persistent infections and egg contamination in laying ducks.Hcp roles as the core structural and effector proteins of T6SS. We generated an hcp deletion mutant MY1△hcp and detected its ability to invade duck granulosa cells (dGCs) and contaminate eggs. Then, Quantitative proteomics of Hcp-mediated Salmonella Enteritidis was performed.
2023-03-11 | PXD032735 | Pride
Project description:The response of chicken to non-typhoidal Salmonella infection is becoming well characterised but the role of particular cell types in this response is still far from being understood. Therefore, in this study we characterised the response of chicken embryo fibroblasts (CEFs) to infection with two different S. Enteritidis strains by microarray analysis. The expression of chicken genes identified as significantly up- or down-regulated (≥3-fold) by microarray analysis was verified by real-time PCR followed by functional classification of the genes and prediction of interactions between the proteins using Gene Ontology and STRING Database. Finally the expression of the newly identified genes was tested in HD11 macrophages and in vivo in chickens. Altogether 19 genes were induced in CEFs after S. Enteritidis infection. Twelve of them were also induced in HD11 macrophages and thirteen in the caecum of orally infected chickens. The majority of these genes were assigned different functions in the immune response, however five of them (LOC101750351, K123, BU460569, MOBKL2C and G0S2) have not been associated with the response of chicken to Salmonella infection so far. K123 and G0S2 were the only 'non-immune' genes inducible by S. Enteritidis in fibroblasts, HD11 macrophages and in the caecum after oral infection. The function of K123 is unknown but G0S2 is involved in lipid metabolism and in β-oxidation of fatty acids in mitochondria. Increased levels of G0S2 might decrease the availability of fatty acids to mitochondria. In non-professional phagocytes such as CEFs, this may lead to the dysfunction of mitochondria, apoptosis of CEFs and release of intracellular Salmonella. In professional phagocytes, G0S2 might be involved in the control of mitochondrial respiration, resulting in a decrease of reactive oxygen species as respiration by-products and lower damage to tissue.
2015-06-12 | GSE67459 | GEO
Project description:The response of chicken to non-typhoidal Salmonella infection is becoming well characterised but the role of particular cell types in this response is still far from being understood. Therefore, in this study we characterised the response of chicken embryo fibroblasts (CEFs) to infection with two different S. Enteritidis strains by microarray analysis. The expression of chicken genes identified as significantly up- or down-regulated (≥3-fold) by microarray analysis was verified by real-time PCR followed by functional classification of the genes and prediction of interactions between the proteins using Gene Ontology and STRING Database. Finally the expression of the newly identified genes was tested in HD11 macrophages and in vivo in chickens. Altogether 19 genes were induced in CEFs after S. Enteritidis infection. Twelve of them were also induced in HD11 macrophages and thirteen in the caecum of orally infected chickens. The majority of these genes were assigned different functions in the immune response, however five of them (LOC101750351, K123, BU460569, MOBKL2C and G0S2) have not been associated with the response of chicken to Salmonella infection so far. K123 and G0S2 were the only 'non-immune' genes inducible by S. Enteritidis in fibroblasts, HD11 macrophages and in the caecum after oral infection. The function of K123 is unknown but G0S2 is involved in lipid metabolism and in β-oxidation of fatty acids in mitochondria. Increased levels of G0S2 might decrease the availability of fatty acids to mitochondria. In non-professional phagocytes such as CEFs, this may lead to the dysfunction of mitochondria, apoptosis of CEFs and release of intracellular Salmonella. In professional phagocytes, G0S2 might be involved in the control of mitochondrial respiration, resulting in a decrease of reactive oxygen species as respiration by-products and lower damage to tissue. In this study we were interested whether chicken embryo fibroblast (CEFs) respond to S. Enteritidis infection and to what extent their response differs from that of other cells and caecal tissue. To address this, we characterised the gene expression of CEFs after infection with two different wild-type S. Enteritidis strains of poultry origin - SE 147 and SE 11 - using Agilen custom 8×15K microarrays. In total, 13,681 probes were designed to characterise the expression of ~9,000 transcripts of Gallus gallus.
2015-06-12 | E-GEOD-67459 | biostudies-arrayexpress
Project description:Screen for differences in gene expression between a parental Salmonella enterica serovar Enteritidis strain (ATCC4931) and an adapted strain with increased resistance to the widely used antimicrobial sanitizer dodecyltrimethylammonium chloride (DTAC)
2012-12-31 | GSE41606 | GEO
Project description:Global gene expression profiling in spleen in chicken inoculated with S. enteritidis and control was conducted to screen differentially expressed genes and identify the key gene, signalling pathways and important biological processes that related to the infection of S. enteritidis
2016-12-01 | GSE56014 | GEO
Project description:To provide insight into the systemic metabolic effects of S. enteritidis infection, liver samples were harvested 10 days post infection from broiler hens. Hepatic global gene expression levels were assessed using a chicken 44K Agilent microarray. Forty-four genes were differentially expressed at a significance level of q-value < 0.05. One hundred eighty-three genes were differentially expressed at a suggestive significance level of q-value < 0.1. A predominance of down-regulation existed among significantly differentially expressed genes. A cell morphology, cell cycle, organismal injury and abnormalities network and a metabolic disease, cardiovascular system development and function, and urological disease network were created from the differentially expressed genes. Apoptosis, electron transport, peptidase activity, vein constriction, cell differentiation, IL-2 signaling, Jak-Stat signaling, B-cell receptor signaling, GDP/GTP exchange, and cytokine suppression were among the functions of the differentially expressed genes that were down-regulated in response to S. enteritidis. The effects of S. enteritidis infection on the liver transcriptome profiles of broilers reflect a predominance of down-regulation of genes involved with metabolic, cell morphology, cell cycle, urological disease, and organismal injury functions. These results provide insight into important systemic metabolic mechanisms that are active in the chicken liver in response to S. enteritidis infection.
2013-02-17 | GSE39448 | GEO
Project description:Investigation of whole genome gene expression level changes in Salmonella enterica serova Enteritidis and Typhimurium under chlorine treatment
2010-03-10 | GSE20701 | GEO
Project description:Screen for differences in gene expression between a parental Salmonella enterica serovar Enteritidis strain (ATCC4931) and an adapted strain with increased resistance to the widely used antimicrobial sanitizer dodecyltrimethylammonium chloride (DTAC) Time course of comparative gene expression changes between log phase parental and adapted Enteritidis strains after 0, 10, 30 and 150 min of exposure to 50% of the respective MIC of DTAC.
2012-12-31 | E-GEOD-41606 | biostudies-arrayexpress
Project description:To provide insight into the systemic metabolic effects of S. enteritidis infection, liver samples were harvested 10 days post infection from broiler hens. Hepatic global gene expression levels were assessed using a chicken 44K Agilent microarray. Forty-four genes were differentially expressed at a significance level of q-value < 0.05. One hundred eighty-three genes were differentially expressed at a suggestive significance level of q-value < 0.1. A predominance of down-regulation existed among significantly differentially expressed genes. A cell morphology, cell cycle, organismal injury and abnormalities network and a metabolic disease, cardiovascular system development and function, and urological disease network were created from the differentially expressed genes. Apoptosis, electron transport, peptidase activity, vein constriction, cell differentiation, IL-2 signaling, Jak-Stat signaling, B-cell receptor signaling, GDP/GTP exchange, and cytokine suppression were among the functions of the differentially expressed genes that were down-regulated in response to S. enteritidis. The effects of S. enteritidis infection on the liver transcriptome profiles of broilers reflect a predominance of down-regulation of genes involved with metabolic, cell morphology, cell cycle, urological disease, and organismal injury functions. These results provide insight into important systemic metabolic mechanisms that are active in the chicken liver in response to S. enteritidis infection. Sixteen broiler hens of approximately 5 months (8 challenged orally with 1x108 S. enteritidis on each of three sequential days and 8 mock-challenged with phosphate buffered saline) were used. Livers were harvested at 10 days post infection and stored in RNALater (Ambion).
2013-02-17 | E-GEOD-39448 | biostudies-arrayexpress