2024
Synergistic effects of sulopenem in combination with cefuroxime or durlobactam against Mycobacterium abscessus
Dousa K, Shin E, Kurz S, Plummer M, Nantongo M, Bethel C, Taracila M, Nguyen D, Kreiswith B, Daley C, Remy K, Holland S, Bonomo R. Synergistic effects of sulopenem in combination with cefuroxime or durlobactam against Mycobacterium abscessus. MBio 2024, 15: e00609-24. PMID: 38742824, PMCID: PMC11237399, DOI: 10.1128/mbio.00609-24.Peer-Reviewed Original ResearchConceptsD,D-carboxypeptidaseMinimum inhibitory concentrationB-lactamPenicillin-binding-proteinCell wall synthesisL,D-transpeptidasesResistance to common antibioticsLowest minimum inhibitory concentrationWall synthesisCystic fibrosisD-carboxypeptidaseMass spectrometry analysisB-lactamaseThioester bondRate of treatment failureCell-based assaysMultiple antibioticsB-lactam ringsCommon antibioticsD-transpeptidasesB-lactamase inhibitorsCysteine residuesTime-kill studiesStructural lung diseaseMultidrug-resistant tuberculosis
2022
Inhibiting Mycobacterium abscessus Cell Wall Synthesis: Using a Novel Diazabicyclooctane β-Lactamase Inhibitor To Augment β-Lactam Action
Dousa K, Nguyen D, Kurz S, Taracila M, Bethel C, Schinabeck W, Kreiswirth B, Brown S, Boom W, Hotchkiss R, Remy K, Jacono F, Daley C, Holland S, Miller A, Bonomo R. Inhibiting Mycobacterium abscessus Cell Wall Synthesis: Using a Novel Diazabicyclooctane β-Lactamase Inhibitor To Augment β-Lactam Action. MBio 2022, 13: e03529-21. PMID: 35073757, PMCID: PMC8787486, DOI: 10.1128/mbio.03529-21.Peer-Reviewed Original ResearchConceptsD-carboxypeptidaseB-lactamB-lactamaseDisrupt cell wall synthesisStable acyl-enzyme complexesCell wall synthesisAcyl-enzyme complexMichaelis-Menten complexB-lactamase inhibitorsWall synthesisPeptidoglycan synthesisStructural lung diseaseTriple drug combinationIsolates to amoxicillinCell-based assaysMycobacterium abscessusMIC rangeImipenemMichaelis constantAcylation rateInhibitor combinationsDurlobactamMultidrug resistanceTherapeutic regimensCystic fibrosis
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