2019
The Type III Secretion System Sorting Platform
Lara-Tejero M. The Type III Secretion System Sorting Platform. Current Topics In Microbiology And Immunology 2019, 427: 133-142. PMID: 31183608, DOI: 10.1007/82_2019_167.Peer-Reviewed Original ResearchConceptsSecretion machineSecretion systemType III secretion injectisomeSecretion processType III secretion systemLarge cytoplasmic complexesProtein secretion machinesHost plasma membraneProtein translocasesCytoplasmic complexSecretion pathwayNeedle complexSorting platformPlasma membraneHost cellsProteinTranslocasesInjectisomeComplexesEffectorsPathwayComplex substructureSubstrateMembraneAssemblyThe Injectisome, a Complex Nanomachine for Protein Injection into Mammalian Cells
Lara-Tejero M, Galán JE. The Injectisome, a Complex Nanomachine for Protein Injection into Mammalian Cells. EcoSal Plus 2019, 8: 10.1128/ecosalplus.esp-0039-2018. PMID: 30942149, PMCID: PMC6450406, DOI: 10.1128/ecosalplus.esp-0039-2018.Peer-Reviewed Original ResearchConceptsEffector proteinsGram-negative bacteriaSecretion systemBacterial envelopeType III protein secretion systemProtein secretion systemHost cellular functionsEukaryotic plasma membraneEukaryotic cell membranesHost cell cytosolMultiprotein nanomachineEukaryotic hostsComplex nanomachinesImportant bacterial pathogensCellular functionsMammalian cellsNeedle complexOuter membranePlasma membraneCell cytosolInjectisomeCell membraneProteinBacterial pathogensCentral role
2018
Visualization of the type III secretion mediated Salmonella–host cell interface using cryo-electron tomography
Park D, Lara-Tejero M, Waxham MN, Li W, Hu B, Galán JE, Liu J. Visualization of the type III secretion mediated Salmonella–host cell interface using cryo-electron tomography. ELife 2018, 7: e39514. PMID: 30281019, PMCID: PMC6175578, DOI: 10.7554/elife.39514.Peer-Reviewed Original ResearchConceptsCryo-electron tomographyEffector translocationBacterial-host cell contactType III protein secretion systemProtein secretion systemHost cell interfaceProtein secretion machinesCell membraneComplex host-pathogen interactionsType III secretionHost-pathogen interactionsHost cell membraneTarget cell membraneNegative bacterial pathogensTranslocon poreSecretion machineEffector proteinsSecretion systemHost cellsBacterial pathogensCell contactCell interfaceIntimate associationTranslocationBacteriaSalmonella stimulates pro-inflammatory signalling through p21-activated kinases bypassing innate immune receptors
Sun H, Kamanova J, Lara-Tejero M, Galán JE. Salmonella stimulates pro-inflammatory signalling through p21-activated kinases bypassing innate immune receptors. Nature Microbiology 2018, 3: 1122-1130. PMID: 30224799, PMCID: PMC6158040, DOI: 10.1038/s41564-018-0246-z.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBacterial LoadCdc42 GTP-Binding ProteinCells, CulturedHost-Pathogen InteractionsHumansImmunity, InnateIntestinesMAP Kinase Kinase KinasesMiceNF-kappa BP21-Activated KinasesPhosphorylationSalmonella InfectionsSalmonella typhimuriumSignal TransductionTNF Receptor-Associated Factor 6Type III Secretion SystemsConceptsP21-activated kinase 1TNF receptor-associated factor 6Innate immune receptorsImmune receptorsType III protein secretion systemMitogen-activated protein kinase kinase kinase 7Protein kinase kinase kinase 7Protein secretion systemPro-inflammatory signalingP21-activated kinaseNegative regulatory mechanismsEnteric pathogen Salmonella typhimuriumPathogen Salmonella typhimuriumIntestinal inflammationMicrobial productsEffector proteinsS. typhimuriumSecretion systemInflammatory signalingRegulatory mechanismsKinase 1Kinase 7PAK inhibitorsCritical downstreamResident microbiota
2017
In Situ Molecular Architecture of the Salmonella Type III Secretion Machine
Hu B, Lara-Tejero M, Kong Q, Galán JE, Liu J. In Situ Molecular Architecture of the Salmonella Type III Secretion Machine. Cell 2017, 168: 1065-1074.e10. PMID: 28283062, PMCID: PMC5393631, DOI: 10.1016/j.cell.2017.02.022.Peer-Reviewed Original ResearchConceptsType III secretion machinesSecretion machineNeedle complexType III protein secretion systemCytoplasmic sorting platformProtein secretion systemMulti-protein machinesProtein secretion machinesTarget eukaryotic cellsCryo-electron tomographyDifferent deletion mutantsSub-tomogram averagingSignificant conformational changesMolecular architectureExport apparatusEukaryotic cellsSecretion systemDeletion mutantsSorting platformConformational changesSitu structureMajor insightsMolecular modelingStructural componentsAssembly
2016
The Salmonella Effector Protein SopA Modulates Innate Immune Responses by Targeting TRIM E3 Ligase Family Members
Kamanova J, Sun H, Lara-Tejero M, Galán JE. The Salmonella Effector Protein SopA Modulates Innate Immune Responses by Targeting TRIM E3 Ligase Family Members. PLOS Pathogens 2016, 12: e1005552. PMID: 27058235, PMCID: PMC4825927, DOI: 10.1371/journal.ppat.1005552.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBacterial ProteinsCell LineDisease Models, AnimalGene Knockout TechniquesHost-Parasite InteractionsHumansImmunity, InnateImmunoprecipitationMass SpectrometryMiceReal-Time Polymerase Chain ReactionSalmonella InfectionsSalmonella typhimuriumSignal TransductionUbiquitin-Protein LigasesConceptsInflammatory responseImmune responseSalmonella typhimurium infectionInnate immune receptorsInnate immune responseHECT-type E3 ligaseTyphimurium infectionAnimal modelsIntestinal epitheliumIntestinal tractImmune receptorsInflammationStimulationTRIM56Type III secretion systemMDA5Pathogenicity island 1Family membersEfficient stimulationSalmonella typhimuriumIsland 1ResponseE3 ubiquitin ligasesInfectionSecretion system
2014
Bacterial Type III Secretion Systems: Specialized Nanomachines for Protein Delivery into Target Cells
Galán JE, Lara-Tejero M, Marlovits TC, Wagner S. Bacterial Type III Secretion Systems: Specialized Nanomachines for Protein Delivery into Target Cells. Annual Review Of Microbiology 2014, 68: 1-24. PMID: 25002086, PMCID: PMC4388319, DOI: 10.1146/annurev-micro-092412-155725.Peer-Reviewed Original ResearchConceptsEukaryotic cellsEffector proteinsBacterial envelopeType III secretion systemTarget eukaryotic cellsComplex nanomachinesNovel antimicrobial strategiesPathogen's benefitCellular functionsSecretion systemNeedle complexBacterial pathogenesisCytoplasmic componentsSpecialized nanomachinesSpecific substratesProteinPlantsCentral roleProtein deliveryAntimicrobial strategiesBacteriaNanomachinesTarget cellsCentral componentCellsNMR Model of PrgI–SipD Interaction and Its Implications in the Needle-Tip Assembly of the Salmonella Type III Secretion System
Rathinavelan T, Lara-Tejero M, Lefebre M, Chatterjee S, McShan AC, Guo DC, Tang C, Galan JE, De Guzman RN. NMR Model of PrgI–SipD Interaction and Its Implications in the Needle-Tip Assembly of the Salmonella Type III Secretion System. Journal Of Molecular Biology 2014, 426: 2958-2969. PMID: 24951833, PMCID: PMC4108505, DOI: 10.1016/j.jmb.2014.06.009.Peer-Reviewed Original ResearchConceptsType III secretion systemTip proteinSecretion systemRecent atomic structuresNeedle tip complexN-terminal αSalmonella type III secretion systemDomain bindsHelical hairpinVirulence proteinsFusion proteinHuman cellsSteric clashesSipDProteinPathogenic bacteriaNMR modelsRecent NMRPrgIPrgI.Needle apparatusPRE methodSpecific regionsStructural componentsAssembly
2013
Engineering the type III secretion system in non-replicating bacterial minicells for antigen delivery
Carleton HA, Lara-Tejero M, Liu X, Galán JE. Engineering the type III secretion system in non-replicating bacterial minicells for antigen delivery. Nature Communications 2013, 4: 1590. PMID: 23481398, PMCID: PMC3693737, DOI: 10.1038/ncomms2594.Peer-Reviewed Original ResearchConceptsBacterial minicellsPresentation pathwayVaccine developmentClass IAntigen-specific CD8Antigen delivery platformSalmonella typhimurium type III secretion systemDelivery platformType III secretion systemCellular immunotherapyT cellsAntigen deliveryImmune responseHeterologous antigensProtein antigensSecretion systemCertain populationsAntigenNanoparticlesDeliveryNanomachinesCD8ImmunotherapyPathwayNovel approach
2011
A Sorting Platform Determines the Order of Protein Secretion in Bacterial Type III Systems
Lara-Tejero M, Kato J, Wagner S, Liu X, Galán JE. A Sorting Platform Determines the Order of Protein Secretion in Bacterial Type III Systems. Science 2011, 331: 1188-1191. PMID: 21292939, PMCID: PMC3859126, DOI: 10.1126/science.1201476.Peer-Reviewed Original ResearchConceptsSecretion systemSorting platformType III protein secretion systemBacterial type III protein secretion systemsType III protein secretionProtein secretionType III secretion systemCytoplasmic sorting platformProtein secretion systemType III systemSalmonella enterica serovar TyphimuriumNovel antimicrobial strategiesEukaryotic cellsEffector proteinsEnterica serovar TyphimuriumCellular processesSerovar TyphimuriumImportant pathogenProteinAntimicrobial strategiesChaperonesSecretionPathogensMechanismSubstrate
2010
Organization and coordinated assembly of the type III secretion export apparatus
Wagner S, Königsmaier L, Lara-Tejero M, Lefebre M, Marlovits TC, Galán JE. Organization and coordinated assembly of the type III secretion export apparatus. Proceedings Of The National Academy Of Sciences Of The United States Of America 2010, 107: 17745-17750. PMID: 20876096, PMCID: PMC2955140, DOI: 10.1073/pnas.1008053107.Peer-Reviewed Original ResearchConceptsExport apparatusNeedle complexType III protein secretion systemType III secretion machinesBacterial effector proteinsProtein secretion systemType III secretion export apparatusCryo-electron microscopyBacterial nanomachinesSecretion machineSymbiotic bacteriaEukaryotic cellsEffector proteinsSecretion systemMembrane proteinsApparatus componentsSubstantial coordinationBase assemblyProteinAssemblyEssential componentInsectsOrganellesComplexesBiology
2009
Salmonella enterica Serovar Typhimurium Pathogenicity Island 1-Encoded Type III Secretion System Translocases Mediate Intimate Attachment to Nonphagocytic Cells
Lara-Tejero M, Galán JE. Salmonella enterica Serovar Typhimurium Pathogenicity Island 1-Encoded Type III Secretion System Translocases Mediate Intimate Attachment to Nonphagocytic Cells. Infection And Immunity 2009, 77: 2635-2642. PMID: 19364837, PMCID: PMC2708559, DOI: 10.1128/iai.00077-09.Peer-Reviewed Original ResearchConceptsType III secretion systemPathogenicity island 1Secretion systemMammalian cellsIntimate associationIsland 1Host cellsBacterial contactBacterial surfaceIntimate attachmentS. typhimurium mutantsProtein translocasesBacterial proteinsMolecular basisTTSS componentsTarget cellsNonphagocytic cellsTyphimurium mutantsImmunofluorescence microscopyDifferent bacteriaTranslocasesSalmonella entericaSipBBacteriaProtein