2009
Control of Salmonella pathogenicity island-2 gene expression
Fass E, Groisman EA. Control of Salmonella pathogenicity island-2 gene expression. Current Opinion In Microbiology 2009, 12: 199-204. PMID: 19264535, PMCID: PMC2805070, DOI: 10.1016/j.mib.2009.01.004.Peer-Reviewed Original ResearchConceptsSPI-2 genesTwo-component systems PhoP/PhoQOmpR/EnvZType III secretion systemDifferent pathogenicity islandsSalmonella pathogenicity island 2PhoP/PhoQPathogenicity island 2H-NSEffector proteinsProtein IHFSecretion systemGene expressionRobust silencingIsland 2Pathogenicity islandHost cellsGenesExpressionEnvZSlyASsrBPhoQTranscriptionSilencing
2005
The PhoP/PhoQ system controls the intramacrophage type three secretion system of Salmonella enterica
Bijlsma JJ, Groisman EA. The PhoP/PhoQ system controls the intramacrophage type three secretion system of Salmonella enterica. Molecular Microbiology 2005, 57: 85-96. PMID: 15948951, DOI: 10.1111/j.1365-2958.2005.04668.x.Peer-Reviewed Original ResearchConceptsSPI-2 pathogenicity islandPhoP/PhoQ systemType three secretion systemThree secretion systemPhoP proteinSecretion systemSsa genesPathogenicity islandTwo-component regulatory systemResponse regulator SsrBPhoP/PhoQRegulatory systemTwo-component systemSalmonella entericaEukaryotic cellsChromatin immunoprecipitationCentral roleDifferent regulatory systemsSalmonella virulenceUntranslated regionDistinct signalsPhoPGenesEffectorsProteinThe origin and evolution of human pathogens
Groisman EA, Casadesús J. The origin and evolution of human pathogens. Molecular Microbiology 2005, 56: 1-7. PMID: 15773974, DOI: 10.1111/j.1365-2958.2005.04564.x.Peer-Reviewed Original ResearchConceptsCreation of genesNon-host environmentsHuman pathogensRelated bacterial speciesCertain pathogensORFan genesHomologous genesCell surface modificationExpression of productsHousekeeping functionsRelated membersHost rangeColonization processTissue specificityPathogenicity islandSequence databasesCertain lociBacterial speciesGenesCell surfaceDisparate regulationGenetic originBacterial pathogensNew functionsGene variation
2004
Phenotypic differences between Salmonella and Escherichia coli resulting from the disparate regulation of homologous genes
Winfield MD, Groisman EA. Phenotypic differences between Salmonella and Escherichia coli resulting from the disparate regulation of homologous genes. Proceedings Of The National Academy Of Sciences Of The United States Of America 2004, 101: 17162-17167. PMID: 15569938, PMCID: PMC534605, DOI: 10.1073/pnas.0406038101.Peer-Reviewed Original ResearchConceptsPmrD proteinPolymyxin B resistanceHomologous genesB resistancePhenotypic differencesDifferential regulationRange of nichesSpecies-specific genesPmrA/PmrBE. coliE. coli KTwo-component systemEnterica serovar TyphimuriumGene transcriptionS. enterica serovar TyphimuriumEcological consequencesColi KLPS modificationsNatural isolatesPathogenicity islandE. coli strainsGenesMolecular analysisEscherichia coliSerovar Typhimurium
2002
Pathogenicity Islands of Shigella
Ingersoll M, Groisman E, Zychlinsky A. Pathogenicity Islands of Shigella. Current Topics In Microbiology And Immunology 2002, 264/2: 49-65. DOI: 10.1007/978-3-642-56031-6_4.Peer-Reviewed Original ResearchIntestinal epithelial barrierResident tissue macrophagesAbdominal crampsLymphoid folliclesMild diarrheaSevere formTissue macrophagesEpithelial barrierEnteric pathogensShigella speciesBacillary dysenteryM cellsDisease rangeCausative agentShigellaeHost cell cytoplasmHuman pathogensShigellaPathogenicity islandDisease symptomsPathogenicity Islands of Shigella
Ingersoll M, Groisman EA, Zychlinsky A. Pathogenicity Islands of Shigella. Current Topics In Microbiology And Immunology 2002, 264: 49-65. PMID: 12014181, DOI: 10.1007/978-3-662-09217-0_4.Peer-Reviewed Original Research
1999
Pathogenicity Islands and the Evolution of Salmonella Virulence
Groisman E, Blanc‐Potard A, Uchiya K. Pathogenicity Islands and the Evolution of Salmonella Virulence. 1999, 127-150. DOI: 10.1128/9781555818173.ch7.Peer-Reviewed Original ResearchSPI-1 genesPathogenicity islandDNA segmentsSPI-1Evolution of SalmonellaCultured epithelial cellsSalmonella-specific sequenceTRNA genesExport apparatusTranscriptional unitsLarge operonNonhost environmentsSecretion systemBacterial entryHousekeeping genesSalmonella virulenceHost rangeSPI-2Secretory systemHost cellsAspects of infectionNonphagocytic cellsGenesMacrophage apoptosisOperonA Salmonella virulence protein that inhibits cellular trafficking
Uchiya K, Barbieri M, Funato K, Shah A, Stahl P, Groisman E. A Salmonella virulence protein that inhibits cellular trafficking. The EMBO Journal 1999, 18: 3924-3933. PMID: 10406797, PMCID: PMC1171468, DOI: 10.1093/emboj/18.14.3924.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBacterial ProteinsBiological TransportCell LineCell SurvivalCytosolEndosomesGenes, BacterialGTP-Binding ProteinsInhibitory Concentration 50Lethal Dose 50LysosomesMacrophagesMembrane FusionMiceMolecular Sequence DataMutationPhagosomesRab5 GTP-Binding ProteinsReceptors, TransferrinSalmonella entericaVirulenceConceptsType III secretion systemSecretion systemIntracellular traffickingSPI-2 pathogenicity islandTrafficking of vesiclesEndosome-endosome fusionHost cell cytosolVirulence proteinsCellular traffickingNormal traffickingSpiC geneCell cytosolPathogenicity islandSalmonella pathogenesisSpiC mutantTraffickingProteinInhibited fusionSindbis virusSalmonella entericaTransferrin receptorJ774 macrophagesMutantsEndosomesGenesThe selC‐associated SHI‐2 pathogenicity island of Shigella flexneri
Moss J, Cardozo T, Zychlinsky A, Groisman E. The selC‐associated SHI‐2 pathogenicity island of Shigella flexneri. Molecular Microbiology 1999, 33: 74-83. PMID: 10411725, DOI: 10.1046/j.1365-2958.1999.01449.x.Peer-Reviewed Original ResearchMeSH KeywordsBacterial ProteinsChromosome MappingChromosomes, BacterialCloning, MolecularColicinsDNA Transposable ElementsDNA, BacterialEnterobacteriaceaeEscherichia coliGenes, BacterialHydroxamic AcidsIntegrasesOperonSequence AlignmentSequence Homology, Nucleic AcidShigella flexneriSpecies SpecificityTransposasesVirulenceConceptsPathogenicity islandSHI-2Different pathogenicity islandsChromosomal gene clusterRelated non-pathogenic speciesMultiple mobile genetic elementsMobile genetic elementsNon-pathogenic speciesSite of integrationTRNA genesSelC locusTRNA locusGene clusterNovel proteinGenetic elementsKb downstreamSiderophore systemStressful environmentsEscherichia coliVirulence factorsEnterohaemorrhagic E. coliE. coliUropathogenic Escherichia coliSalmonella entericaGenesThe SPI-3 Pathogenicity Island ofSalmonella enterica
Blanc-Potard A, Solomon F, Kayser J, Groisman E. The SPI-3 Pathogenicity Island ofSalmonella enterica. Journal Of Bacteriology 1999, 181: 998-1004. PMID: 9922266, PMCID: PMC93469, DOI: 10.1128/jb.181.3.998-1004.1999.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAdhesins, Escherichia coliAmino Acid SequenceBacterial ProteinsBase CompositionCarrier ProteinsCation Transport ProteinsChromosomes, BacterialDNA PrimersDNA-Binding ProteinsEscherichia coliEvolution, MolecularMolecular Sequence DataMultigene FamilyOpen Reading FramesOperonPhylogenyPolymerase Chain ReactionRNA, BacterialRNA, TransferSalmonella entericaSequence AlignmentTranscription FactorsTranscription, GeneticVibrio choleraeVirulenceConceptsOpen reading framePathogenicity islandReading framePathogen-specific virulence genesSubspecies of SalmonellaFour-gene clusterMolecular genetic structureSalmonella enterica serovar TyphimuriumGenetic structureTranscriptional unitsChromosomal clustersEnterica serovar TyphimuriumTRNA locusSequence similaritySalmonella genomeRegulatory proteinsEnteropathogenic Escherichia coliSPI-3Escherichia coliSerovar TyphimuriumInsertion sequenceVibrio choleraeVirulence genesMultistep processSubspecies
1997
The Salmonella selC locus contains a pathogenicity island mediating intramacrophage survival
Blanc‐Potard A, Groisman E. The Salmonella selC locus contains a pathogenicity island mediating intramacrophage survival. The EMBO Journal 1997, 16: 5376-5385. PMID: 9311997, PMCID: PMC1170169, DOI: 10.1093/emboj/16.17.5376.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAnimalsBacterial ProteinsBase SequenceCarrier ProteinsCation Transport ProteinsCulture MediaEscherichia coliEscherichia coli ProteinsFemaleGenes, BacterialMacrophagesMagnesiumMembrane Transport ProteinsMiceMice, Inbred BALB CMolecular Sequence DataMultigene FamilyMutationOperonPhenotypeRecombination, GeneticRNA, TransferSalmonella Infections, AnimalSalmonella typhimuriumConceptsPathogenicity islandSelC locusIntramacrophage survivalSalmonella typhimurium chromosomePhoP/PhoQKb DNA segmentVirulence genesNon-pathogenic bacterial speciesTwo-component systemSite of integrationChromosomal clustersTRNA locusVirulence functionsDNA segmentsSalmonella virulenceHomologous regionsMajor regulatorBacterial speciesLociEnteric bacteriaEscherichia coliGenesBenign strainsLow Mg2VirulenceHow Salmonella became a pathogen
Groisman E, Ochman H. How Salmonella became a pathogen. Trends In Microbiology 1997, 5: 343-349. PMID: 9294889, DOI: 10.1016/s0966-842x(97)01099-8.Peer-Reviewed Original Research
1996
Identification of a pathogenicity island required for Salmonella survival in host cells.
Ochman H, Soncini FC, Solomon F, Groisman EA. Identification of a pathogenicity island required for Salmonella survival in host cells. Proceedings Of The National Academy Of Sciences Of The United States Of America 1996, 93: 7800-7804. PMID: 8755556, PMCID: PMC38828, DOI: 10.1073/pnas.93.15.7800.Peer-Reviewed Original ResearchConceptsPathogenicity islandType III secretion systemSalmonella typhimurium chromosomeWild-type levelsEpithelial cell invasionWild-type strainSPI genesSecretion systemPutative regulatorHost cellsSecretory apparatusCell invasionSecreted proteaseVirulence determinantsSpi(-) mutantsGenesProteinProteaseSalmonella survivalEnteric pathogensMutantsChromosomesIslandsCulture supernatantsForms of flagellin