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Salmonella growth condition adaptation

ABSTRACT: To determine the impact of a low Mg(2+)/pH defined growth medium (MgM) on the proteome of Salmonella enterica serotype Typhimurium, researchers cultured S. Typhimurium cells in the medium under two different conditions termed MgM Shock and MgM Dilution and then comparatively analyzed the bacterial cells harvested from these conditions by a global proteomic approach.

INSTRUMENT(S): LTQ Orbitrap

ORGANISM(S): Salmonella Typhimurium (strain 14028s / Sgsc 2262)

SUBMITTER: Matthew Monroe

PROVIDER: PXD000392 | Pride | 2013-10-07

REPOSITORIES: Pride

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			Action	DRS
	AID_STM_120_121506_R1_B3_04May07_Owl_07-03-05.mgf	Mgf
	AID_STM_120_121506_R1_B3_04May07_Owl_07-03-05.raw	Raw
	AID_STM_120_121506_R1_B3_04May07_Owl_07-03-05_msgfplus.mzid	Mzid
	AID_STM_120_121506_R2_B3_18Apr07_Owl_07-03-05.mgf	Mgf
	AID_STM_120_121506_R2_B3_18Apr07_Owl_07-03-05.raw	Raw

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Publications

Proteome of Salmonella Enterica Serotype Typhimurium Grown in a Low Mg/pH Medium.

Shi Liang L Ansong Charles C Smallwood Heather H Rommereim Leah L McDermott Jason E JE Brewer Heather M HM Norbeck Angela D AD Taylor Ronald C RC Gustin Jean K JK Heffron Fred F Smith Richard D RD Adkins Joshua N JN

Journal of proteomics & bioinformatics 20090101

To determine the impact of a low Mg(2+)/pH defined growth medium (MgM) on the proteome of Salmonella enterica serotype Typhimurium, we cultured S. Typhimurium cells in the medium under two different conditions termed MgM Shock and MgM Dilution and then comparatively analyzed the bacterial cells harvested from these conditions by a global proteomic approach. Proteomic results showed that MgM Shock and MgM Dilution differentially affected the S. Typhimurium proteome. MgM Shock induced a group of p ...[more]

PMID: 19953200

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2013-10-07 | PXD000389 | Pride

Salmonella Typhimurium stbC mutant

Project description:Salmonella enterica serotype Typhimurium produces a variety of fimbrial appendages, among which the type 1 fimbriae is the most common type. In vitro static broth culture favors S. Typhimurium to produce type 1 fimbriae, while solid agar inhibits its expression. A transposon inserted in the stbC gene, which would encode an usher protein for Stb fimbriae of a non-flagellar S. Typhimurium LB5010 strain, conferred it to agglutinate yeast cells on both cultures, and was mannose-sensitive. Reverse transcription polymerase chain reaction (RT-PCR) revealed that the expression of the fimbrial major subunit gene fimA, and fimZ, a positive regulator gene of fimA, were both increased in the stbC mutant strain when grown on LB agar; fimW, a repressor gene of fimA, exhibited lower expression. Flagella were observed in the stbC mutant and this phenotype was correlated with the motile phenotype detected by MSRV agar medium and reaction with flagella antiserum. Microarray data and RT-PCR also indicated that the expression of three genes, motA, motB, and cheM, was enhanced in the stbC mutant. The S. Typhimurium stbC mutant was resistant to a variety of antibiotics, consistent with the finding that expression of yhcQ and ramA, two genes involved in multidrug resistance, was enhanced. A complementation test revealed that transforming a recombinant plasmid possessing the coding sequence of the stbC gene restored the mannose-sensitive agglutination phenotype to the stbC mutant much as that in the parental S. Typhimurium LB5010 strain, indicating the possibility of an interplay of different fimbrial systems in coordinating their expression. Key Words: Salmonella enterica serotype Typhimurium, fimbriae, type 1 fimbriae, stbC, transposon, multidrug resistant, flagella

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Mouse Salmonella Study

Project description:Salmonella enterica serotype Typhimurium causes an acute inflammatory reaction in the cecum of streptomycin pre-treated mice. We determined global changes in gene expression elicited by serotype Typhimurium in the cecal mucosa. The gene expression profile was dominated by T cell derived cytokines and genes whose expression is known to be induced by these cytokines. Markedly increased mRNA levels of interferon (IFN-gamma), interleukin-22 (IL-22) and IL-17 were detected by quantitative real-time PCR. Furthermore, mRNA levels of genes whose expression is induced by IFN-gamma, IL-22 or IL-17, including macrophage inflammatory protein 2 (MIP-2), inducible nitric oxide synthase (Nos2), lipocalin-2, MIP-1alpha, MIP-1beta, and keratinocyte-derived cytokine (KC), were also markedly increased. To assess the importance of T cells in orchestrating this pro-inflammatory gene expression profile, we depleted T cells using a monoclonal antibody prior to investigating cecal inflammation caused by serotype Typhimurium in streptomycin pre-treated mice. Depletion of CD3+ T cells resulted in a dramatic reduction in gross pathology, a significantly reduced recruitment of neutrophils and a marked reduction in mRNA levels of IFN-gamma, IL-22, IL-17, iNOS, lipocalin-2 and KC. Our results suggest that T cells play an important role in amplifying inflammatory responses induced by serotype Typhimurium in the cecal mucosa. Keywords: Disease state analysis

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Salmonella enterica serovar Typhimurium strain 14028s transcriptome response to tomato media

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Salmonella enterica serovar Typhimurium strain 14028s transcriptome response to lettuce media

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Transcription profiling of mouse cecal mucosa AFTER infection WITH Salmonella serotype Typhimurium

Project description:Salmonella enterica serotype Typhimurium causes an acute inflammatory reaction in the cecum of streptomycin pre-treated mice. We determined global changes in gene expression elicited by serotype Typhimurium in the cecal mucosa. The gene expression profile was dominated by T cell derived cytokines and genes whose expression is known to be induced by these cytokines. Markedly increased mRNA levels of interferon (IFN) ï§, interleukin (IL) 22 and IL-17 were detected by quantitative real-time PCR. Furthermore, mRNA levels of genes whose expression is induced by IFNï§, IL-22 or IL-17, including macrophage inflammatory protein (MIP)-2, inducible nitric oxide synthase (iNOS), lipocalin-2, MIP-1ï¡, MIP-1ï¢, and keratinocyte-derived cytokine (KC), were also markedly increased. To assess the importance of T cells in orchestrating this pro-inflammatory gene expression profile, we depleted T cells using a monoclonal antibody prior to investigating cecal inflammation caused by serotype Typhimurium in streptomycin pre-treated mice. Depletion of CD3+ T cells resulted in a dramatic reduction in gross pathology, a significantly reduced recruitment of neutrophils and a marked reduction in mRNA levels of IFNï§, IL-22, IL-17, iNOS, lipocalin-2 and KC. Our results suggest that T cells play an important role in amplifying inflammatory responses induced by serotype Typhimurium in the cecal mucosa. Experiment Overall Design: Determine global changes in gene expression elicited by serotype Typhimurium in the cecal mucosa. For each condition, control and infected, total cecal RNA from 4 mice was pooled

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