期刊
ANTIMICROBIAL AGENTS AND CHEMOTHERAPY
卷 62, 期 5, 页码 -出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/AAC.00074-18
关键词
beta-lactamase; metallo-beta-lactamase; NDM-1; carbapenem; inhibitor; resistance
资金
- Wellcome Trust
Infections caused by carbapenem-resistant Enterobacteriaceae (CRE) are increasingly prevalent and have become a major worldwide threat to human health. Carbapenem resistance is driven primarily by the acquisition of beta-lactamase enzymes, which are able to degrade carbapenem antibiotics (hence termed carbapen-emases) and result in high levels of resistance and treatment failure. Clinically relevant carbapenemases include both serine beta-lactamases (SBLs; e.g., KPC-2 and OXA-48) and metallo-beta-lactamases (MBLs), such as NDM-1. MBL-producing strains are endemic within the community in many Asian countries, have successfully spread worldwide, and account for many significant CRE outbreaks. Recently approved combinations of beta-lactam antibiotics with beta-lactamase inhibitors are active only against SBL-producing pathogens. Therefore, new drugs that specifically target MBLs and which restore carbapenem efficacy against MBL-producing CRE pathogens are urgently needed. Here we report the discovery of a novel MBL inhibitor, ANT431, that can potentiate the activity of meropenem (MEM) against a broad range of MBL-producing CRE and restore its efficacy against an Escherichia coli NDM-1-producing strain in a murine thigh infection model. This is a strong starting point for a chemistry lead optimization program that could deliver a first-in-class MBL inhibitor-carbapenem combination. This would complement the existing weaponry against CRE and address an important and growing unmet medical need.
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