2021
A Primed Subpopulation of Bacteria Enables Rapid Expression of the Type 3 Secretion System in Pseudomonas aeruginosa
Lin CK, Lee DSW, McKeithen-Mead S, Emonet T, Kazmierczak B. A Primed Subpopulation of Bacteria Enables Rapid Expression of the Type 3 Secretion System in Pseudomonas aeruginosa. MBio 2021, 12: 10.1128/mbio.00831-21. PMID: 34154400, PMCID: PMC8262847, DOI: 10.1128/mbio.00831-21.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsGene Expression Regulation, BacterialMicePromoter Regions, GeneticPseudomonas aeruginosaPseudomonas InfectionsTranscription, GeneticType III Secretion SystemsVirulenceVirulence FactorsConceptsType 3 secretion systemSecretion systemT3SS expressionVirulence traitsSpecific virulence traitsHuman disease severityComplex nanomachinesT3SS genesP. aeruginosa cellsReproductive fitnessIsogenic cellsHeterogeneous expressionCell envelopeT3SS effectorsMotility organellesReservoir of cellsCritical virulence traitsGene expressionRegulatory mechanismsSubpopulation of cellsGram-negative pathogensFluorescent reportersDivision timeP. aeruginosaPseudomonas aeruginosa
2020
Hfq and sRNA 179 Inhibit Expression of the Pseudomonas aeruginosa cAMP-Vfr and Type III Secretion Regulons
Janssen KH, Corley JM, Djapgne L, Cribbs JT, Voelker D, Slusher Z, Nordell R, Regulski EE, Kazmierczak BI, McMackin EW, Yahr TL. Hfq and sRNA 179 Inhibit Expression of the Pseudomonas aeruginosa cAMP-Vfr and Type III Secretion Regulons. MBio 2020, 11: 10.1128/mbio.00363-20. PMID: 32546612, PMCID: PMC7298702, DOI: 10.1128/mbio.00363-20.Peer-Reviewed Original ResearchMeSH KeywordsBacterial ProteinsCyclic AMP Receptor ProteinCyclic AMP-Dependent Protein KinasesGene Expression Regulation, BacterialGene LibraryHost Factor 1 ProteinPromoter Regions, GeneticPseudomonas aeruginosaRegulonRNA, BacterialRNA, Small UntranslatedTranscription, GeneticType III Secretion SystemsVirulence FactorsConceptsSmall noncoding RNAsType III secretion systemSecretion systemNoncoding RNAsGene expressionTranscription factorsExpression libraryGac/Rsm systemType VI secretion systemT3SS gene expressionCAMP-responsive transcription factorRNA-binding proteinVirulence factorsGram-negative opportunistic pathogenRNA chaperonesGlobal regulatorT3SS regulonMutant lackingTarget mRNAsCritical virulence factorImportant virulence factorMRNA targetsHfqRegulonRsm systemA Screen for Antibiotic Resistance Determinants Reveals a Fitness Cost of the Flagellum in Pseudomonas aeruginosa
Rundell EA, Commodore N, Goodman AL, Kazmierczak BI. A Screen for Antibiotic Resistance Determinants Reveals a Fitness Cost of the Flagellum in Pseudomonas aeruginosa. Journal Of Bacteriology 2020, 202: 10.1128/jb.00682-19. PMID: 31871033, PMCID: PMC7043666, DOI: 10.1128/jb.00682-19.Peer-Reviewed Original ResearchMeSH KeywordsAnti-Bacterial AgentsBacterial Outer Membrane ProteinsBiological TransportDose-Response Relationship, DrugDrug Resistance, BacterialFlagellaGene Expression Regulation, BacterialGenetic FitnessHumansPseudomonas aeruginosaQuorum SensingConceptsFlagellar assemblyFitness advantageFitness costsCell envelopeOuter membrane barrier functionOuter membrane biogenesisUnbiased high-throughput approachOuter membrane barrierMembrane barrier functionHigh-throughput approachMembrane biogenesisGram-negative bacteriaFlagellar functionInsertion sequencingOuter membraneGene productsPresence of linezolidPresence of antibioticsAntibiotic resistance determinantsMembrane barrierAntibiotic entryFitnessEfflux pumpsGlycopeptide antibiotic vancomycinGenes
2019
Modulation of flagellar rotation in surface-attached bacteria: A pathway for rapid surface-sensing after flagellar attachment
Schniederberend M, Williams JF, Shine E, Shen C, Jain R, Emonet T, Kazmierczak BI. Modulation of flagellar rotation in surface-attached bacteria: A pathway for rapid surface-sensing after flagellar attachment. PLOS Pathogens 2019, 15: e1008149. PMID: 31682637, PMCID: PMC6855561, DOI: 10.1371/journal.ppat.1008149.Peer-Reviewed Original ResearchMeSH KeywordsBacterial ProteinsBiofilmsCyclic AMPFimbriae, BacterialFlagellaGene Expression Regulation, BacterialMonomeric GTP-Binding ProteinsMutationPhenotypePseudomonas aeruginosaSignal TransductionVirulenceConceptsFlagellar rotationSurface-attached bacteriaGram-negative opportunistic pathogen Pseudomonas aeruginosaOpportunistic pathogen Pseudomonas aeruginosaSwitch complex proteinsSingle polar flagellumBiofilm formationSurface-associated behaviorsSurface-associated structuresType IV piliPathogen Pseudomonas aeruginosaGenetic screenPolar flagellumTranscriptional programsBiofilm initiationComplex proteinsMutant bacteriaFlagellar attachmentSecond messengerP. aeruginosaFlhFBacteriaFlagellaPathwayAltered behaviorIn Situ Structures of Polar and Lateral Flagella Revealed by Cryo-Electron Tomography
Zhu S, Schniederberend M, Zhitnitsky D, Jain R, Galán JE, Kazmierczak BI, Liu J. In Situ Structures of Polar and Lateral Flagella Revealed by Cryo-Electron Tomography. Journal Of Bacteriology 2019, 201: 10.1128/jb.00117-19. PMID: 31010901, PMCID: PMC6560136, DOI: 10.1128/jb.00117-19.Peer-Reviewed Original ResearchMeSH KeywordsBacterial ProteinsCryoelectron MicroscopyElectron Microscope TomographyFlagellaGene Expression Regulation, BacterialPseudomonas aeruginosaSalmonella typhimuriumConceptsCryo-electron tomographyBacterial flagellaFlagellar assemblyPolar flagellumPeritrichous flagellaSerovar TyphimuriumSpecies-specific featuresBacterial pathogensOuter membrane complexSelf-assembling nanomachineFlagellar systemFlagellar structureFlagellar numberSubtomogram averagingMembrane complexLateral flagellaStructural basisDistinct flagellaMolecular machinesFlagellaSitu structureModel systemPseudomonasTyphimuriumRange of variation
2018
Host suppression of quorum sensing during catheter-associated urinary tract infections
Cole SJ, Hall CL, Schniederberend M, Farrow III JM, Goodson JR, Pesci EC, Kazmierczak BI, Lee VT. Host suppression of quorum sensing during catheter-associated urinary tract infections. Nature Communications 2018, 9: 4436. PMID: 30361690, PMCID: PMC6202348, DOI: 10.1038/s41467-018-06882-y.Peer-Reviewed Original ResearchConceptsCatheter-associated urinary tract infectionsUrinary tract infectionTract infectionsChronic bacterial infectionP. aeruginosaAntibiotic therapyUrinary tractDevice-associated biofilmsMurine modelHost immunityClinical isolatesBacterial infectionsInfectionPseudomonas aeruginosaUrineAeruginosaTherapyRegulated genesImmunityTract
2015
Cross-regulation of Pseudomonas motility systems: the intimate relationship between flagella, pili and virulence
Kazmierczak BI, Schniederberend M, Jain R. Cross-regulation of Pseudomonas motility systems: the intimate relationship between flagella, pili and virulence. Current Opinion In Microbiology 2015, 28: 78-82. PMID: 26476804, PMCID: PMC4688086, DOI: 10.1016/j.mib.2015.07.017.Peer-Reviewed Original ResearchAnimalsBacterial ProteinsFimbriae, BacterialFlagellaGene Expression Regulation, BacterialHumansImmunity, InnateMiceMovementPseudomonas aeruginosaVirulence
2014
A Conservative Amino Acid Mutation in the Master Regulator FleQ Renders Pseudomonas aeruginosa Aflagellate
Jain R, Kazmierczak BI. A Conservative Amino Acid Mutation in the Master Regulator FleQ Renders Pseudomonas aeruginosa Aflagellate. PLOS ONE 2014, 9: e97439. PMID: 24827992, PMCID: PMC4020848, DOI: 10.1371/journal.pone.0097439.Peer-Reviewed Original ResearchConceptsMurine pulmonary infectionIL-1 signalPresence of mutationsPulmonary infectionAcute infectionBacterial clearanceHost responseBacterial infectionsClinical strainsInfectionSystem expressionAmino acid changesAmino acid mutationsSingle amino acid changeStrain PA103ClearanceAmino acid substitutionsPseudomonas aeruginosa pathogenesisPathogen recognitionAcid changesPA103Negative correlationMotilityAcid mutationsConservative amino acid substitutions
2013
Spatial and numerical regulation of flagellar biosynthesis in polarly flagellated bacteria
Kazmierczak BI, Hendrixson DR. Spatial and numerical regulation of flagellar biosynthesis in polarly flagellated bacteria. Molecular Microbiology 2013, 88: 655-663. PMID: 23600726, PMCID: PMC3654036, DOI: 10.1111/mmi.12221.Peer-Reviewed Original ResearchMeSH KeywordsBacteriaBacterial ProteinsFlagellaGene Expression Regulation, BacterialMacromolecular SubstancesMonomeric GTP-Binding ProteinsTrans-ActivatorsConceptsPolar flagellatesFlagellar assemblyProper cell divisionRotation of flagellaFlagellar biosynthesisFlagellation patternsGram-negative bacteriaPeritrichous flagellaOrganelle numberCell divisionCell biologyFlhGFlhFBacterial speciesBacterial cellsFlagellatesFlagellaDifferent bacteriaMechanistic insightsProteinBacteriaRecent findingsSpeciesSpecific activityDistinct patterns
2009
Pseudomonas aeruginosa OspR is an oxidative stress sensing regulator that affects pigment production, antibiotic resistance and dissemination during infection
Lan L, Murray TS, Kazmierczak BI, He C. Pseudomonas aeruginosa OspR is an oxidative stress sensing regulator that affects pigment production, antibiotic resistance and dissemination during infection. Molecular Microbiology 2009, 75: 76-91. PMID: 19943895, PMCID: PMC2881571, DOI: 10.1111/j.1365-2958.2009.06955.x.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SubstitutionAnimalsAnti-Bacterial AgentsBeta-Lactam ResistanceBeta-LactamsFemaleGene DeletionGene Expression Regulation, BacterialGlutathione PeroxidaseHydrogen PeroxideMiceMice, Inbred C57BLModels, BiologicalMutagenesis, Site-DirectedOxidative StressPigments, BiologicalPneumoniaPseudomonas aeruginosaPseudomonas InfectionsQuorum SensingRepressor ProteinsSignal TransductionStress, PhysiologicalTyrosineVirulenceConceptsOxidative stress sensingCys-24Stress sensingPigment productionNull mutant strainOxidative stressSerine substitution mutantsGlobal regulatorPromoter DNASubstitution mutantsAdditional genesInside hostsQuorum sensingCys residuesMutant strainConstitutive expressionMultiple pathwaysRegulatory effectsBeta-lactam resistanceGenesSignificant inductionRegulatorTyrosine metabolismOSPRP. aeruginosa
2006
Mutational Analysis of RetS, an Unusual Sensor Kinase-Response Regulator Hybrid Required for Pseudomonas aeruginosa Virulence
Laskowski MA, Kazmierczak BI. Mutational Analysis of RetS, an Unusual Sensor Kinase-Response Regulator Hybrid Required for Pseudomonas aeruginosa Virulence. Infection And Immunity 2006, 74: 4462-4473. PMID: 16861632, PMCID: PMC1539586, DOI: 10.1128/iai.00575-06.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBacterial ProteinsFemaleGene Expression Regulation, BacterialHumansMiceMice, Inbred C57BLPhosphotransferasesPneumonia, BacterialPoint MutationProtein KinasesPseudomonas aeruginosaPseudomonas InfectionsSignal TransductionVirulenceConceptsType III secretion system proteinsSignal transduction domainsSecretion system proteinsUpregulation of genesPeriplasmic domainSensor kinaseReceiver domainTransmembrane domainRegulator proteinTransduction domainMutational analysisSignaling roleSystem proteinsReciprocal regulationPseudomonas aeruginosaRET activityBiofilm formationVirulence factorsOpportunistic pathogenT3SSProteinRET alleleRETP. aeruginosaKey role
2004
A novel sensor kinase–response regulator hybrid regulates type III secretion and is required for virulence in Pseudomonas aeruginosa
Laskowski MA, Osborn E, Kazmierczak BI. A novel sensor kinase–response regulator hybrid regulates type III secretion and is required for virulence in Pseudomonas aeruginosa. Molecular Microbiology 2004, 54: 1090-1103. PMID: 15522089, PMCID: PMC3650721, DOI: 10.1111/j.1365-2958.2004.04331.x.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBacterial ProteinsBase SequenceCalciumFemaleGene Expression Regulation, BacterialHistidine KinaseMiceMice, Inbred C57BLProtein KinasesProtein Structure, TertiaryPseudomonas aeruginosaPseudomonas InfectionsRecombinant Fusion ProteinsSignal TransductionTrans-ActivatorsTranscription, GeneticConceptsType III secretion systemTwo-component signaling proteinsCalcium limitationResponse regulator domainType III effectorsBasal transcription rateWild-type parentNorthern blot analysisRegulator domainHistidine kinasePeriplasmic domainTranscriptional activatorEukaryotic cellsTTSS effectorsTranscriptional fusionsTransmembrane domainEnvironmental signalsSignaling proteinsSecretion systemSensor proteinsTTSS genesTranscription rateOperonPseudomonas aeruginosaEffector production
1993
Analysis of the structure and subcellular location of filamentous phage pIV
Russel M, Kaźmierczak B. Analysis of the structure and subcellular location of filamentous phage pIV. Journal Of Bacteriology 1993, 175: 3998-4007. PMID: 8320216, PMCID: PMC204828, DOI: 10.1128/jb.175.13.3998-4007.1993.Peer-Reviewed Original ResearchMeSH KeywordsAlkaline PhosphataseBacterial ProteinsCell CompartmentationColiphagesDNA Mutational AnalysisGene Expression Regulation, BacterialGenes, ViralHeat-Shock ProteinsMembrane ProteinsMutationOperonRecombinant Fusion ProteinsSequence DeletionSequence Homology, Amino AcidSpheroplastsSubcellular FractionsViral ProteinsVirus ReplicationConceptsMembrane localization domainIntegral membrane proteinsSubstrate-binding domainAmino-terminal halfCarboxy-terminal halfSeries of genesCell fractionation studiesCytoplasmic domainPhage assemblyDeletion mutantsMembrane proteinsSubcellular locationLocalization domainFusion proteinFractionation studiesFilamentous phagePhosphatase activityFilamentous bacteriophageAlkaline phosphatase activityMissense mutationsProteinAssemblyDomainMutantsGenes