Title |
Assay Platform for Clinically Relevant Metallo-β-lactamases
|
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Published in |
Journal of Medicinal Chemistry, August 2013
|
DOI | 10.1021/jm400769b |
Pubmed ID | |
Authors |
Sander S. van Berkel, Jürgen Brem, Anna M. Rydzik, Ramya Salimraj, Ricky Cain, Anil Verma, Raymond J. Owens, Colin W. G. Fishwick, James Spencer, Christopher J. Schofield |
Abstract |
Metallo-β-lactamases (MBLs) are a growing threat to the use of almost all clinically used β-lactam antibiotics. The identification of broad-spectrum MBL inhibitors is hampered by the lack of a suitable screening platform, consisting of appropriate substrates and a set of clinically relevant MBLs. We report procedures for the preparation of a set of clinically relevant metallo-β-lactamases (i.e., NDM-1 (New Delhi MBL), IMP-1 (Imipenemase), SPM-1 (São Paulo MBL), and VIM-2 (Verona integron-encoded MBL)) and the identification of suitable fluorogenic substrates (umbelliferone-derived cephalosporins). The fluorogenic substrates were compared to chromogenic substrates (CENTA, nitrocefin, and imipenem), showing improved sensitivity and kinetic parameters. The efficiency of the fluorogenic substrates was exemplified by inhibitor screening, identifying 4-chloroisoquinolinols as potential pan MBL inhibitors. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Unknown | 2 | 100% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Scientists | 1 | 50% |
Members of the public | 1 | 50% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
India | 1 | <1% |
Unknown | 129 | 99% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 22 | 17% |
Student > Master | 21 | 16% |
Student > Ph. D. Student | 18 | 14% |
Student > Bachelor | 9 | 7% |
Other | 8 | 6% |
Other | 26 | 20% |
Unknown | 26 | 20% |
Readers by discipline | Count | As % |
---|---|---|
Chemistry | 46 | 35% |
Biochemistry, Genetics and Molecular Biology | 17 | 13% |
Agricultural and Biological Sciences | 17 | 13% |
Engineering | 5 | 4% |
Medicine and Dentistry | 4 | 3% |
Other | 10 | 8% |
Unknown | 31 | 24% |