Salmonella enterica
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1327943 | ENA |
REPOSITORIES: ENA
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Project description:The 2017-2019 foodborne outbreak of Salmonella enterica serovar Reading (S. Reading) in North America revealed the need for effective control of this serovar in turkey production. This study evaluated two live-attenuated Salmonella vaccines against an outbreak-associated strain of S. Reading in turkeys. At 1 day and 3 weeks of age, male turkey poults were either mock-vaccinated or given either an internally developed cross-protective vaccine and a commercially available vaccine. At 7 weeks of age, poults were challenged with S. Reading; one mock-vaccinated group was mock-challenged. Along with assessment of Salmonella colonization and dissemination, acute transcriptomic responses in the cecal tonsil were characterized at 2 days post inoculation and revealed decreased expression of genes encoding intestinal transporters and tight junction proteins. Vaccination with either vaccine mitigated most of the transcriptional changes in intestinal health-related genes induced by S. Reading in turkey cecal tonsil.
2025-01-08 | GSE283163 | GEO
Project description:Salmonella enterica subsp. enterica genome sequencing for One Health Surveillance in Palestine
| PRJNA942086 | ENA
Project description:Salmonella enterica causes serious global burden of morbidity and mortality and is a major cause of infant bacteremia in sub Saharan Africa. Diseases caused by Salmonella are treatable with antibiotics but successful antibiotic treatment has become difficult due to antimicrobial resistance. An effective vaccine together with public health effort may therefore be a better strategy to control these infections. Protective immunity against Salmonella depends primarily on T cell-mediated immune responses and therefore identifying relevant T cell antigens is necessary for Salmonella vaccine development. Our laboratory has used an immunoproteomics approach to identify Chlamydia T cell antigens that exhibited significant protection against Chlamydia infection in mice. In this study, we infected murine bone marrow derived dendritic cells from C57BL/6 mice with Salmonella enterica strain SL1344 followed by isolation of MHC class I and II- molecules and elution of bound peptides. The sequences of the peptides were then identified using tandem mass spectrometry. We identified 87 MHC class II and 23 MHC class I Salmonella derived peptides. Four of 12 peptides stimulated IFN-? production by CD4 T cells from the spleens of mice with persistent Salmonella infection. These antigens will be useful for Salmonella immunobiology research and are potential Salmonella vaccine candidates.
2016-12-14 | PXD004451 | Pride
Project description:Salmonella enterica serovar Typhimurium is a gram-negative bacterium that can colonize the gut of humans and several species of food producing farm animals to cause enteric or septicaemic salmonellosis. Besides compromising public health and food safety, sub-clinical salmonellosis is also believed to be a major problem affecting the profitability of the pig industry. Distinct responses to Salmonella infection have been observed in pigs, some recovering faster and shedding lower levels of Salmonella in faeces than others (low shedders, LS versus persistent shedders, PS). This trait variation could indicate the existence of a genetic component to Salmonella shedding and resistance that may be exploited in animal breeding and disease diagnostics. The study aimed to characterize changes in miRNA expression in response to Salmonella infection.
2015-10-22 | E-MTAB-2286 | biostudies-arrayexpress
Project description:Part of a study to characterise the two component regulatory system yehUT of Salmonella enterica serovar Salmonella Typhi and Typhimurium.
2013-09-17 | GSE50825 | GEO
Project description:Salmonella has various mechanisms of small RNA-mediated gene regulation. In Salmonella enterica serovar Typhimurium, a novel intergenic transcript RaoN is involved in oxidative stress response which functions as one of the powerful antimicrobials in macrophage innate immunity. We note that the ∆raoN mutant is sensitive to hydrogen peroxide (5.0 mM). This finding provides insights into the function of RaoN as a regulator of oxidative stress response.
2012-07-01 | GSE37626 | GEO
Project description:Investigation of whole genome gene expression level changes in a Salmonella enterica serovar Typhimurium UK1 delta-iacP mutant, compared to the wild-type strain. IacP is resoponsible for the secretion of virulence effector proteins via the type III secretion system, thereby contributing the virulence of S. Typhimurium. The mutants analyzed in this study are further described in Kim et al. 2011. Role of Salmonella Pathogenicity Island 1 Protein IacP in Salmonella enterica Serovar Typhimurium Pathogenesis. Infection and Immunity 79(4):1440-1450 (PMID 21263021). A chip study using total RNA recovered from two separate wild-type cultures of Salmonella enterica serovar Typhimurium UK1 and two separate cultures of a mutant strain, Salmonella enterica serovar Typhimurium UK1 delta-iacP. Each chip measures the expression level of 4,302 genes from Salmonella enterica serovar Typhimurium.
2012-04-29 | E-GEOD-34663 | biostudies-arrayexpress
Project description:We performed affinity purification coupled to quantitative mass spectrometry (AP-qMS) for proteins belonging to retrons of Salmonella enterica. We quantified the proteome of rcaT point mutants in Salmonella enterica. We quantified the proteome of phage P1vir in E. coli.
2022-06-13 | PXD022376 | Pride