2020
Mechanisms of substrate recognition by a typhoid toxin secretion-associated muramidase
Geiger T, Lara-Tejero M, Xiong Y, Galán JE. Mechanisms of substrate recognition by a typhoid toxin secretion-associated muramidase. ELife 2020, 9: e53473. PMID: 31958059, PMCID: PMC6996933, DOI: 10.7554/elife.53473.Peer-Reviewed Original Research
2019
Alternate subunit assembly diversifies the function of a bacterial toxin
Fowler CC, Stack G, Jiao X, Lara-Tejero M, Galán JE. Alternate subunit assembly diversifies the function of a bacterial toxin. Nature Communications 2019, 10: 3684. PMID: 31417089, PMCID: PMC6695444, DOI: 10.1038/s41467-019-11592-0.Peer-Reviewed Original ResearchInvestigation of the role of typhoid toxin in acute typhoid fever in a human challenge model
Gibani MM, Jones E, Barton A, Jin C, Meek J, Camara S, Galal U, Heinz E, Rosenberg-Hasson Y, Obermoser G, Jones C, Campbell D, Black C, Thomaides-Brears H, Darlow C, Dold C, Silva-Reyes L, Blackwell L, Lara-Tejero M, Jiao X, Stack G, Blohmke CJ, Hill J, Angus B, Dougan G, Galán J, Pollard AJ. Investigation of the role of typhoid toxin in acute typhoid fever in a human challenge model. Nature Medicine 2019, 25: 1082-1088. PMID: 31270506, PMCID: PMC6892374, DOI: 10.1038/s41591-019-0505-4.Peer-Reviewed Original ResearchConceptsHuman challenge modelTyphoid toxinChallenge modelTyphoid feverAcute typhoid feverDuration of bacteremiaFurther clinical dataS. typhiAcute infectionOral challengeClinical syndromeChronic infectionBacterial carriageClinical dataSevere diseaseTN groupFever symptomsHealthy volunteersDisease pathogenesisTyphoid infectionTyphoid diseaseColony-forming unitsHost-restricted pathogenInfectionSalmonella typhi
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
2016
A 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