2020
Itaconate is an effector of a Rab GTPase cell-autonomous host defense pathway against Salmonella
Chen M, Sun H, Boot M, Shao L, Chang SJ, Wang W, Lam TT, Lara-Tejero M, Rego EH, Galán JE. Itaconate is an effector of a Rab GTPase cell-autonomous host defense pathway against Salmonella. Science 2020, 369: 450-455. PMID: 32703879, PMCID: PMC8020367, DOI: 10.1126/science.aaz1333.Peer-Reviewed Original Research
2018
Peptidoglycan editing by a specific ld-transpeptidase controls the muramidase-dependent secretion of typhoid toxin
Geiger T, Pazos M, Lara-Tejero M, Vollmer W, Galán JE. Peptidoglycan editing by a specific ld-transpeptidase controls the muramidase-dependent secretion of typhoid toxin. Nature Microbiology 2018, 3: 1243-1254. PMID: 30250245, PMCID: PMC7464686, DOI: 10.1038/s41564-018-0248-x.Peer-Reviewed Original ResearchConceptsProtein export mechanismProtein secretion mechanismsTyphoid toxinEssential virulence factorBacterial poleMammalian cellsPeptidoglycan layerMost bacterial pathogensOuter membraneExport mechanismSecretion mechanismToxin secretionBacterial speciesTranslocation processTrans sideVirulence factorsBacterial pathogensExtracellular spaceTransport pathwaysTarget cellsToxinTyphoid feverCellsSubsequent releaseSecretion
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
A Family of Salmonella Type III Secretion Effector Proteins Selectively Targets the NF-κB Signaling Pathway to Preserve Host Homeostasis
Sun H, Kamanova J, Lara-Tejero M, Galán JE. A Family of Salmonella Type III Secretion Effector Proteins Selectively Targets the NF-κB Signaling Pathway to Preserve Host Homeostasis. PLOS Pathogens 2016, 12: e1005484. PMID: 26933955, PMCID: PMC4775039, DOI: 10.1371/journal.ppat.1005484.Peer-Reviewed Original ResearchConceptsNF-κBHost homeostasisNF-κB Signaling PathwayHost innate immune responsePro-inflammatory cytokinesInnate immune responseType III secretion effector proteinsHost tissue damageIntestinal inflammationSalmonella typhimurium strainsImmune responseAnimal modelsInflammationRelB transcription factorPathogen replicationMicrobial infectionsTyphimurium strainsEffector proteinsSignaling pathwaysType III secretion systemInfectionBacterial pathogensBacteria Salmonella typhimuriumSignal transduction pathwaysSalmonella typhimuriumA Bacterial Pathogen Targets a Host Rab-Family GTPase Defense Pathway with a GAP
Spanò S, Gao X, Hannemann S, Lara-Tejero M, Galán JE. A Bacterial Pathogen Targets a Host Rab-Family GTPase Defense Pathway with a GAP. Cell Host & Microbe 2016, 19: 216-226. PMID: 26867180, PMCID: PMC4854434, DOI: 10.1016/j.chom.2016.01.004.Peer-Reviewed Original ResearchConceptsAntimicrobial defenseCell-autonomous defense mechanismS. typhi infectionHuman pathogen Salmonella typhiExchange factor BLOC-3Host defense pathwaysTyphi infectionType III secretion effectorsIntracellular pathogensPotential broad roleVacuolar pathogensSalmonella typhiPotent strategySalmonella effectorsBacterial pathogensMiceS. typhimuriumDefense pathwaysDefense mechanismsPathogen targetsPathogensEffectorsPathwayBroader roleBLOC-3
2006
A MyD88-Deficient Mouse Model Reveals a Role for Nramp1 in Campylobacter jejuni Infection
Watson RO, Novik V, Hofreuter D, Lara-Tejero M, Galán JE. A MyD88-Deficient Mouse Model Reveals a Role for Nramp1 in Campylobacter jejuni Infection. Infection And Immunity 2006, 75: 1994-2003. PMID: 17194808, PMCID: PMC1865720, DOI: 10.1128/iai.01216-06.Peer-Reviewed Original ResearchConceptsJejuni infectionAdaptor protein myeloid differentiation factor 88Myeloid differentiation factor 88Most Toll-like receptorsMyD88-deficient miceDifferentiation factor 88Campylobacter jejuni infectionAdult immunocompetent miceToll-like receptorsMajor worldwide causeFactor 88Immunocompetent miceMouse modelMouse susceptibilityEnteric illnessWorldwide causeJejuni colonizationInfectionMiceC. jejuniCampylobacter jejuniPotential roleVirulence genesBacterial pathogensIsogenic derivatives