2023
Isotope tracing reveals bacterial catabolism of host-derived glutathione during Helicobacter pylori infection
Baskerville M, Kovalyova Y, Mejías-Luque R, Gerhard M, Hatzios S. Isotope tracing reveals bacterial catabolism of host-derived glutathione during Helicobacter pylori infection. PLOS Pathogens 2023, 19: e1011526. PMID: 37494402, PMCID: PMC10406306, DOI: 10.1371/journal.ppat.1011526.Peer-Reviewed Original ResearchConceptsH. pylori infectionPylori infectionInfected cellsBacterial catabolismGastric pathogen Helicobacter pyloriGSH depletionPathogen Helicobacter pyloriH. pylori-infected cellsMammalian cellsReactive oxygen speciesHelicobacter pylori infectionH. pylori colonizationCellular biomoleculesGSH homeostasisBacterial acquisitionCertain bacteriaVirulence factorsAntioxidant glutathioneIntracellular GSHOxidative damageOxidized GSHΓ-glutamyl transpeptidaseIsotope tracingHost tissuesOxygen species
2022
A microbial transporter of the dietary antioxidant ergothioneine
Dumitrescu D, Gordon E, Kovalyova Y, Seminara A, Duncan-Lowey B, Forster E, Zhou W, Booth C, Shen A, Kranzusch P, Hatzios S. A microbial transporter of the dietary antioxidant ergothioneine. Cell 2022, 185: 4526-4540.e18. PMID: 36347253, PMCID: PMC9691600, DOI: 10.1016/j.cell.2022.10.008.Peer-Reviewed Original ResearchConceptsInter-kingdom competitionHost-associated microbesIntracellular redox homeostasisGastric pathogen Helicobacter pyloriPathogen Helicobacter pyloriRedox regulationSmall molecule antioxidantsRedox homeostasisBiosynthetic pathwayColonization advantageUnappreciated mechanismLMW thiolsHost environmentHuman faecal bacteriaWeight thiolsCertain microorganismsAntioxidant ergothioneineGastrointestinal microbesMetabolite trimethylamine N-oxideMicrobesMillimolar levelsHuman tissuesErgothioneineTrimethylamine N-oxideFecal bacteria