Real‐Time Monitoring of New Delhi Metallo‐β‐Lactamase Activity in Living Bacterial Cells by 1 H NMR Spectroscopy
| Autor: | Shubha Sriram, Junhe Ma, Ning Gao, Kathleen MacCormack, Alexander L. Breeze, Sarah M. McLeod, Jun Hu |
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| Rok vydání: | 2014 |
| Předmět: |
Captopril
Magnetic Resonance Spectroscopy antibiotic resistance Spermine Ethylenediaminetetraacetic acid medicine.disease_cause Meropenem beta-Lactamases Catalysis drug discovery chemistry.chemical_compound NMR spectroscopy In vivo Drug Resistance Bacterial Escherichia coli medicine Enzyme Inhibitors Edetic Acid Chemistry Hydrolysis General Medicine General Chemistry Nuclear magnetic resonance spectroscopy Communications In vitro Anti-Bacterial Agents New Delhi metallo-β-lactamase Biochemistry Porin Thienamycins medicine.drug |
| Zdroj: | Angewandte Chemie (International Ed. in English) |
| ISSN: | 1521-3773 1433-7851 |
| Popis: | Disconnections between in vitro responses and those observed in whole cells confound many attempts to design drugs in areas of serious medical need. A method based on 1D (1)H NMR spectroscopy is reported that affords the ability to monitor the hydrolytic decomposition of the carbapenem antibiotic meropenem inside Escherichia coli cells expressing New Delhi metallo-β-lactamase subclass 1 (NDM-1), an emerging antibiotic-resistance threat. Cell-based NMR studies demonstrated that two known NDM-1 inhibitors, L-captopril and ethylenediaminetetraacetic acid (EDTA), inhibit the hydrolysis of meropenem in vivo. NDM-1 activity in cells was also shown to be inhibited by spermine, a porin inhibitor, although in an in vitro assay, the influence of spermine on the activity of isolated NDM-1 protein is minimal. This new approach may have generic utility for monitoring reactions involving diffusible metabolites in other complex biological matrices and whole-cell settings, including mammalian cells. |
| Databáze: | OpenAIRE |
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