Article (Scientific journals)
Structure-Guided Design of Cell Wall Biosynthesis Inhibitors That Overcome beta-Lactam Resistance in Staphylococcus aureus (MRSA).
Contreras-Martel, Carlos; Amoroso, Ana Maria; Woon, Esther C.Y. et al.
2011In ACS Chemical Biology
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Keywords :
penicillin-binding proteins; boronic acid; MRSA
Abstract :
[en] beta-Lactam antibiotics have long been a treatment of choice for bacterial infections since they bind irreversibly to Penicillin-Binding Proteins (PBPs), enzymes that are vital for cell wall biosynthesis. Many pathogens express drug-insensitive PBPs rendering beta-lactams ineffective, revealing a need for new types of PBP inhibitors active against resistant strains. We have identified alkyl boronic acids that are active against pathogens including methicillin-resistant S. aureus (MRSA). The crystal structures of PBP1b complexed to 11 different alkyl boronates demonstrate that in vivo efficacy correlates with the mode of inhibitor side chain binding. Staphylococcal membrane analyses reveal that the most potent alkyl boronate targets PBP1, an autolysis system regulator, and PBP2a, a low beta-lactam affinity enzyme. This work demonstrates the potential of boronate-based PBP inhibitors for circumventing beta-lactam resistance and opens avenues for the development of novel antibiotics that target Gram-positive pathogens.
Research center :
GIGA CRC (Cyclotron Research Center) In vivo Imaging-Aging & Memory - ULiège
CIP - Centre d'Ingénierie des Protéines - ULiège
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Contreras-Martel, Carlos
Amoroso, Ana Maria ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Woon, Esther C.Y.
Zervosen, Astrid 
Inglis, Steven
Martins, Alexandre;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Verlaine, Olivier 
Rydzik, Anna M.
Job, Viviane;  Université de Liège - ULiège > Département de chimie (sciences) > Chimie organique de synthèse
Luxen, André ;  Université de Liège - ULiège > Département des sciences de la vie > Physiologie et génétique bactériennes
Schofield, Christopher J.
Dessen, Andréa
More authors (3 more) Less
Language :
English
Title :
Structure-Guided Design of Cell Wall Biosynthesis Inhibitors That Overcome beta-Lactam Resistance in Staphylococcus aureus (MRSA).
Publication date :
2011
Journal title :
ACS Chemical Biology
ISSN :
1554-8937
eISSN :
1554-8929
Publisher :
American Chemical Society, Washington, United States - Washington
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Eur-Intafar
Funders :
UE - Union Européenne [BE]
Belgian Program on Interuniversity Poles of Attraction
Available on ORBi :
since 18 October 2011

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