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  1. Article ; Online: Durlobactam, a Diazabicyclooctane β-Lactamase Inhibitor, Inhibits BlaC and Peptidoglycan Transpeptidases of

    Nantongo, Mary / Nguyen, David C / Bethel, Christopher R / Taracila, Magdalena A / Li, Qing / Dousa, Khalid M / Shin, Eunjeong / Kurz, Sebastian G / Nguyen, Liem / Kreiswirth, Barry N / Boom, W Henry / Plummer, Mark S / Bonomo, Robert A

    ACS infectious diseases

    2024  

    Abstract: Peptidoglycan synthesis is an underutilized drug target ... ...

    Abstract Peptidoglycan synthesis is an underutilized drug target in
    Language English
    Publishing date 2024-04-15
    Publishing country United States
    Document type Journal Article
    ISSN 2373-8227
    ISSN (online) 2373-8227
    DOI 10.1021/acsinfecdis.4c00119
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Resistance to Novel β-Lactam-β-Lactamase Inhibitor Combinations: The "Price of Progress".

    Papp-Wallace, Krisztina M / Mack, Andrew R / Taracila, Magdalena A / Bonomo, Robert A

    Infectious disease clinics of North America

    2020  Volume 34, Issue 4, Page(s) 773–819

    Abstract: Significant advances were made in antibiotic development during the past 5 years. Novel agents were added to the arsenal that target critical priority pathogens, including multidrug-resistant Pseudomonas aeruginosa and carbapenem-resistant ... ...

    Abstract Significant advances were made in antibiotic development during the past 5 years. Novel agents were added to the arsenal that target critical priority pathogens, including multidrug-resistant Pseudomonas aeruginosa and carbapenem-resistant Enterobacterales. Of these, 4 novel β-lactam-β-lactamase inhibitor combinations (ceftolozane-tazobactam, ceftazidime-avibactam, meropenem-vaborbactam, and imipenem-cilastatin-relebactam) reached clinical approval in the United States. With these additions comes a significant responsibility to reduce the possibility of emergence of resistance. Reports in the rise of resistance toward ceftolozane-tazobactam and ceftazidime-avibactam are alarming. Clinicians and scientists must make every attempt to reverse or halt these setbacks.
    MeSH term(s) Amino Acid Substitution ; Bacteria/drug effects ; Bacteria/genetics ; Drug Combinations ; Drug Resistance, Multiple, Bacterial ; Humans ; Mutagenesis, Insertional ; Sequence Deletion ; United States ; beta-Lactamase Inhibitors/pharmacology ; beta-Lactams/pharmacology
    Chemical Substances Drug Combinations ; beta-Lactamase Inhibitors ; beta-Lactams
    Language English
    Publishing date 2020-09-30
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S. ; Review
    ZDB-ID 1077676-x
    ISSN 1557-9824 ; 0891-5520
    ISSN (online) 1557-9824
    ISSN 0891-5520
    DOI 10.1016/j.idc.2020.05.001
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: α-Triazolylboronic Acids: A Promising Scaffold for Effective Inhibitors of KPCs.

    Introvigne, Maria Luisa / Taracila, Magdalena A / Prati, Fabio / Caselli, Emilia / Bonomo, Robert A

    ChemMedChem

    2020  Volume 15, Issue 14, Page(s) 1283–1288

    Abstract: Boronic acids are known reversible covalent inhibitors of serine β-lactamases. The selectivity and high potency of specific boronates bearing an amide side chain that mimics the β-lactam's amide side chain have been advanced in several studies. Herein, ... ...

    Abstract Boronic acids are known reversible covalent inhibitors of serine β-lactamases. The selectivity and high potency of specific boronates bearing an amide side chain that mimics the β-lactam's amide side chain have been advanced in several studies. Herein, we describe a new class of boronic acids in which the amide group is replaced by a bioisostere triazole. The boronic acids were obtained in a two-step synthesis that relies on the solid and versatile copper-catalyzed azide-alkyne cycloaddition (CuAAC) followed by boronate deprotection. All of the compounds show very good inhibition of the Klebsiella pneumoniae carbapenemase KPC-2, with K
    MeSH term(s) Anti-Bacterial Agents/chemical synthesis ; Anti-Bacterial Agents/chemistry ; Anti-Bacterial Agents/pharmacology ; Bacterial Proteins/antagonists & inhibitors ; Bacterial Proteins/isolation & purification ; Bacterial Proteins/metabolism ; Boronic Acids/chemical synthesis ; Boronic Acids/chemistry ; Boronic Acids/pharmacology ; Dose-Response Relationship, Drug ; Klebsiella pneumoniae/drug effects ; Klebsiella pneumoniae/enzymology ; Microbial Sensitivity Tests ; Molecular Structure ; Structure-Activity Relationship ; Triazoles/chemical synthesis ; Triazoles/chemistry ; Triazoles/pharmacology ; beta-Lactamase Inhibitors/chemical synthesis ; beta-Lactamase Inhibitors/chemistry ; beta-Lactamase Inhibitors/pharmacology ; beta-Lactamases/isolation & purification ; beta-Lactamases/metabolism
    Chemical Substances Anti-Bacterial Agents ; Bacterial Proteins ; Boronic Acids ; Triazoles ; beta-Lactamase Inhibitors ; beta-Lactamases (EC 3.5.2.6) ; carbapenemase-2, Klebsiella pneumoniae (EC 3.5.2.6)
    Language English
    Publishing date 2020-06-22
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2218496-X
    ISSN 1860-7187 ; 1860-7179
    ISSN (online) 1860-7187
    ISSN 1860-7179
    DOI 10.1002/cmdc.202000126
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: The Effectiveness of Imipenem-Relebactam against Ceftazidime-Avibactam Resistant Variants of the KPC-2 β-Lactamase.

    Papp-Wallace, Krisztina M / Barnes, Melissa D / Taracila, Magdalena A / Bethel, Christopher R / Rutter, Joseph D / Zeiser, Elise T / Young, Katherine / Bonomo, Robert A

    Antibiotics (Basel, Switzerland)

    2023  Volume 12, Issue 5

    Abstract: Background: Ceftazidime-avibactam was approved by the FDA to treat infections caused by Enterobacterales carrying : Methods: The activity of imipenem-relebactam was assessed against a panel of 19 KPC-2 D179 variants. KPC-2 and the D179N and D179Y ... ...

    Abstract Background: Ceftazidime-avibactam was approved by the FDA to treat infections caused by Enterobacterales carrying
    Methods: The activity of imipenem-relebactam was assessed against a panel of 19 KPC-2 D179 variants. KPC-2 and the D179N and D179Y variants were purified for biochemical analyses. Molecular models were constructed with imipenem to assess differences in kinetic profiles.
    Results: All strains were susceptible to imipenem-relebactam, but resistant to ceftazidime (19/19) and ceftazidime-avibactam (18/19). KPC-2 and the D179N variant hydrolyzed imipenem, but the D179N variant's rate was much slower. The D179Y variant was unable to turnover imipenem. All three β-lactamases hydrolyzed ceftazidime at varying rates. The acylation rate of relebactam for the D179N variant was ~2.5× lower than KPC-2. Poor catalytic turnover by the D179Y variant precluded the determination of inhibitory kinetic parameters. Acyl-complexes with imipenem and ceftazidime were less prevalent with the D179N variant compared to the D179Y variant, supporting the kinetic observations that the D179Y variant was not as active as the D179N variant. Relebactam was slower to form an acyl-complex with the D179Y variant compared to avibactam. The D179Y model with imipenem revealed that the catalytic water molecule was shifted, and the carbonyl of imipenem was not within the oxyanion hole. Conversely in the D179N model, imipenem was oriented favorably for deacylation.
    Conclusions: Imipenem-relebactam overcame the resistance of the D179 variants, suggesting that this combination will be active against clinical isolates harboring these derivatives of KPC-2.
    Language English
    Publishing date 2023-05-11
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2681345-2
    ISSN 2079-6382
    ISSN 2079-6382
    DOI 10.3390/antibiotics12050892
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Natural protein engineering in the Ω-loop: the role of Y221 in ceftazidime and ceftolozane resistance in

    Mack, Andrew R / Kumar, Vijay / Taracila, Magdalena A / Mojica, Maria F / O'Shea, Margaret / Schinabeck, William / Silver, Galen / Hujer, Andrea M / Papp-Wallace, Krisztina M / Chen, Shuang / Haider, Shozeb / Caselli, Emilia / Prati, Fabio / van den Akker, Focco / Bonomo, Robert A

    Antimicrobial agents and chemotherapy

    2023  Volume 67, Issue 11, Page(s) e0079123

    Abstract: A wide variety of clinically observed single amino acid substitutions in the Ω-loop region have been associated with increased minimum inhibitory concentrations and resistance to ceftazidime (CAZ) and ceftolozane (TOL) ... ...

    Abstract A wide variety of clinically observed single amino acid substitutions in the Ω-loop region have been associated with increased minimum inhibitory concentrations and resistance to ceftazidime (CAZ) and ceftolozane (TOL) in
    MeSH term(s) Ceftazidime/pharmacology ; Cephalosporinase/metabolism ; Pseudomonas/genetics ; Molecular Docking Simulation ; beta-Lactamases/metabolism ; Protein Engineering ; Microbial Sensitivity Tests ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/metabolism ; Azabicyclo Compounds/pharmacology ; Pseudomonas aeruginosa/metabolism ; Drug Combinations
    Chemical Substances Ceftazidime (9M416Z9QNR) ; ceftolozane (37A4IES95Q) ; Cephalosporinase (EC 3.5.2.-) ; S02030 ; beta-Lactamases (EC 3.5.2.6) ; Anti-Bacterial Agents ; Azabicyclo Compounds ; Drug Combinations
    Language English
    Publishing date 2023-10-18
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/aac.00791-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Sulfonamidoboronic Acids as "Cross-Class" Inhibitors of an Expanded-Spectrum Class C Cephalosporinase, ADC-33, and a Class D Carbapenemase, OXA-24/40: Strategic Compound Design to Combat Resistance in

    Introvigne, Maria Luisa / Beardsley, Trevor J / Fernando, Micah C / Leonard, David A / Wallar, Bradley J / Rudin, Susan D / Taracila, Magdalena A / Rather, Philip N / Colquhoun, Jennifer M / Song, Shaina / Fini, Francesco / Hujer, Kristine M / Hujer, Andrea M / Prati, Fabio / Powers, Rachel A / Bonomo, Robert A / Caselli, Emilia

    Antibiotics (Basel, Switzerland)

    2023  Volume 12, Issue 4

    Abstract: Acinetobacter ... ...

    Abstract Acinetobacter baumannii
    Language English
    Publishing date 2023-03-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2681345-2
    ISSN 2079-6382
    ISSN 2079-6382
    DOI 10.3390/antibiotics12040644
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Boronic Acid Transition State Inhibitors as Potent Inactivators of KPC and CTX-M β-Lactamases: Biochemical and Structural Analyses.

    Alsenani, Tahani A / Rodríguez, María Margarita / Ghiglione, Barbara / Taracila, Magdalena A / Mojica, Maria F / Rojas, Laura J / Hujer, Andrea M / Gutkind, Gabriel / Bethel, Christopher R / Rather, Philip N / Introvigne, Maria Luisa / Prati, Fabio / Caselli, Emilia / Power, Pablo / van den Akker, Focco / Bonomo, Robert A

    Antimicrobial agents and chemotherapy

    2023  Volume 67, Issue 1, Page(s) e0093022

    Abstract: Design of novel β-lactamase inhibitors (BLIs) is one of the currently accepted strategies to combat the threat of cephalosporin and carbapenem resistance in Gram-negative bacteria. ...

    Abstract Design of novel β-lactamase inhibitors (BLIs) is one of the currently accepted strategies to combat the threat of cephalosporin and carbapenem resistance in Gram-negative bacteria.
    MeSH term(s) beta-Lactamases/genetics ; beta-Lactamases/chemistry ; Triazoles ; beta-Lactamase Inhibitors/pharmacology ; Boronic Acids/pharmacology ; Boronic Acids/chemistry ; Penicillins ; Anti-Bacterial Agents/pharmacology ; Microbial Sensitivity Tests
    Chemical Substances S02030 ; beta-Lactamases (EC 3.5.2.6) ; Triazoles ; beta-Lactamase Inhibitors ; Boronic Acids ; Penicillins ; Anti-Bacterial Agents
    Language English
    Publishing date 2023-01-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/aac.00930-22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Predicting β-lactam resistance using whole genome sequencing in Klebsiella pneumoniae: the challenge of β-lactamase inhibitors.

    Hujer, Andrea M / Long, S Wesley / Olsen, Randall J / Taracila, Magdalena A / Rojas, Laura J / Musser, James M / Bonomo, Robert A

    Diagnostic microbiology and infectious disease

    2020  Volume 98, Issue 3, Page(s) 115149

    Abstract: Although multiple antimicrobial resistance (AMR) determinants can confer the same in vitro antimicrobial susceptibility testing (AST) phenotype, their differing effect on optimal therapeutic choices is uncertain. Using a large population-based collection ...

    Abstract Although multiple antimicrobial resistance (AMR) determinants can confer the same in vitro antimicrobial susceptibility testing (AST) phenotype, their differing effect on optimal therapeutic choices is uncertain. Using a large population-based collection of clinical strains spanning a 3.5-year period, we applied WGS to detect inhibitor resistant (IR), extended-spectrum β-lactamase (ESBL), and carbapenem resistant (CR) β-lactamase (bla) genes and compared the genotype to the AST phenotype in select isolates. All bla
    MeSH term(s) Amino Acid Sequence ; Anti-Bacterial Agents/pharmacology ; Drug Resistance, Multiple, Bacterial ; Gene Expression Regulation, Bacterial/drug effects ; Gene Expression Regulation, Enzymologic ; Genome, Bacterial ; Genotype ; Klebsiella pneumoniae/drug effects ; Whole Genome Sequencing ; beta-Lactamase Inhibitors/pharmacology ; beta-Lactamases/chemistry ; beta-Lactamases/metabolism ; beta-Lactams/pharmacology
    Chemical Substances Anti-Bacterial Agents ; beta-Lactamase Inhibitors ; beta-Lactams ; beta-lactamase PIT-2 (EC 3.5.2.-) ; beta-Lactamases (EC 3.5.2.6)
    Language English
    Publishing date 2020-07-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 604920-5
    ISSN 1879-0070 ; 0732-8893
    ISSN (online) 1879-0070
    ISSN 0732-8893
    DOI 10.1016/j.diagmicrobio.2020.115149
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Inhibiting Mycobacterium abscessus Cell Wall Synthesis: Using a Novel Diazabicyclooctane β-Lactamase Inhibitor To Augment β-Lactam Action.

    Dousa, Khalid M / Nguyen, David C / Kurz, Sebastian G / Taracila, Magdalena A / Bethel, Christopher R / Schinabeck, William / Kreiswirth, Barry N / Brown, Sheldon T / Boom, W Henry / Hotchkiss, Richard S / Remy, Kenneth E / Jacono, Frank J / Daley, Charles L / Holland, Steven M / Miller, Alita A / Bonomo, Robert A

    mBio

    2022  Volume 13, Issue 1, Page(s) e0352921

    Abstract: Mycobacterium abscessus ( ...

    Abstract Mycobacterium abscessus (
    MeSH term(s) Humans ; beta-Lactams/pharmacology ; beta-Lactamase Inhibitors/pharmacology ; Anti-Bacterial Agents/pharmacology ; Mycobacterium abscessus ; Cefuroxime/pharmacology ; Microbial Sensitivity Tests ; Imipenem/pharmacology ; Amoxicillin/pharmacology ; Amoxicillin/therapeutic use ; beta-Lactamases
    Chemical Substances beta-Lactams ; beta-Lactamase Inhibitors ; Anti-Bacterial Agents ; durlobactam (PSA33KO9WA) ; Cefuroxime (O1R9FJ93ED) ; Imipenem (71OTZ9ZE0A) ; Amoxicillin (804826J2HU) ; beta-Lactamases (EC 3.5.2.6)
    Language English
    Publishing date 2022-01-25
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2557172-2
    ISSN 2150-7511 ; 2161-2129
    ISSN (online) 2150-7511
    ISSN 2161-2129
    DOI 10.1128/mbio.03529-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Different Conformations Revealed by NMR Underlie Resistance to Ceftazidime/Avibactam and Susceptibility to Meropenem and Imipenem among D179Y Variants of KPC β-Lactamase.

    Taracila, Magdalena A / Bethel, Christopher R / Hujer, Andrea M / Papp-Wallace, Krisztina M / Barnes, Melissa D / Rutter, Joseph D / VanPelt, Jamie / Shurina, Ben A / van den Akker, Focco / Clancy, Cornelius J / Nguyen, M Hong / Cheng, Shaoji / Shields, Ryan K / Page, Richard C / Bonomo, Robert A

    Antimicrobial agents and chemotherapy

    2022  Volume 66, Issue 4, Page(s) e0212421

    Abstract: β-Lactamase-mediated resistance to ceftazidime-avibactam (CZA) is a serious limitation in the treatment of Gram-negative bacteria harboring Klebsiella pneumoniae carbapenemase (KPC). Herein, the basis of susceptibility to carbapenems and resistance to ... ...

    Abstract β-Lactamase-mediated resistance to ceftazidime-avibactam (CZA) is a serious limitation in the treatment of Gram-negative bacteria harboring Klebsiella pneumoniae carbapenemase (KPC). Herein, the basis of susceptibility to carbapenems and resistance to ceftazidime (CAZ) and CZA of the D179Y variant of KPC-2 and -3 was explored. First, we determined that resistance to CZA in a laboratory strain of Escherichia coli DH10B was not due to increased expression levels of the variant enzymes, as demonstrated by reverse transcription PCR (RT-PCR). Using timed mass spectrometry, the D179Y variant formed prolonged acyl-enzyme complexes with imipenem (IMI) and meropenem (MEM) in KPC-2 and KPC-3, which could be detected up to 24 h, suggesting that IMI and MEM act as covalent β-lactamase inhibitors more than as substrates for D179Y KPC-2 and -3. This prolonged acyl-enzyme complex of IMI and MEM by D179Y variants was not observed with wild-type (WT) KPCs. CAZ was studied and the D179Y variants also formed acyl-enzyme complexes (1 to 2 h). Thermal denaturation and differential scanning fluorimetry showed that the tyrosine substitution at position 179 destabilized the KPC β-lactamases (KPC-2/3 melting temperature [
    MeSH term(s) Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Azabicyclo Compounds/pharmacology ; Bacterial Proteins/genetics ; Bacterial Proteins/metabolism ; Ceftazidime/pharmacology ; Drug Combinations ; Escherichia coli/genetics ; Escherichia coli/metabolism ; Humans ; Imipenem/pharmacology ; Klebsiella Infections/drug therapy ; Klebsiella pneumoniae ; Magnetic Resonance Spectroscopy ; Meropenem/pharmacology ; Microbial Sensitivity Tests ; beta-Lactamases/genetics ; beta-Lactamases/metabolism
    Chemical Substances Anti-Bacterial Agents ; Azabicyclo Compounds ; Bacterial Proteins ; Drug Combinations ; avibactam, ceftazidime drug combination ; Imipenem (71OTZ9ZE0A) ; avibactam (7352665165) ; Ceftazidime (9M416Z9QNR) ; beta-Lactamases (EC 3.5.2.6) ; carbapenemase (EC 3.5.2.6) ; Meropenem (FV9J3JU8B1)
    Language English
    Publishing date 2022-03-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/aac.02124-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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