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 ResearchMeSH KeywordsAnimalsAntioxidantsGastric MucosaGlutathioneHelicobacter InfectionsHelicobacter pyloriMammalsStomachConceptsH. 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
An infection-induced oxidation site regulates legumain processing and tumor growth
Kovalyova Y, Bak DW, Gordon EM, Fung C, Shuman JHB, Cover TL, Amieva MR, Weerapana E, Hatzios SK. An infection-induced oxidation site regulates legumain processing and tumor growth. Nature Chemical Biology 2022, 18: 698-705. PMID: 35332331, PMCID: PMC9246868, DOI: 10.1038/s41589-022-00992-x.Peer-Reviewed Original ResearchMeSH KeywordsCell Transformation, NeoplasticCysteineCysteine EndopeptidasesHelicobacter InfectionsHelicobacter pyloriHumansOxidation-ReductionStomach NeoplasmsConceptsCysteine reactivityOxidation sitesTumor growthChemical proteomicsH. pylori-infected cellsRedox-sensitive cysteinesInduces oxidationReactivityOxidationOxidation EventHuman gastric cellsCarcinogenic infectionsBacterium Helicobacter pyloriXenograft modelHelicobacter pyloriSite-specific lossGastric cellsMost cancersOxidative stressReactive oxygen speciesTumor formationOxygen speciesInfectionTumorigenesisCysteine