共 30 条
Novel IMP-1 metallo-β-lactamase inhibitors can reverse meropenem resistance in Escherichia coli expressing IMP-1
被引:27
作者:

Moloughney, JG
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机构:
Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA

Thomas, JD
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机构:
Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA

Toney, JH
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机构:
Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA
机构:
[1] Montclair State Univ, Dept Chem & Biochem, Montclair, NJ 07043 USA
关键词:
antibiotic resistance;
beta-lactam antibiotics;
metallo-beta-lactamase;
metallo-beta-lactamase inhibitors;
succinic acids;
D O I:
10.1016/j.femsle.2004.11.042
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
IMP-1 metallo-beta-lactamase is a zinc metalloenzyme that confers antibiotic resistance to bacteria through the hydrolysis of beta-lactam antibiotics. Pathogens that express the enzyme show reduced susceptibility to carbapenems, Such as meropenem and imipenem. In order to identify novel IMP-1 inhibitors, the National Cancer Institute (NCI) chemical diversity set was screened using 96-well high throughput screening format. The collection yielded several novel succinic acid derivatives that exhibited mixed inhibition of IMP-1 with compound 20707 having the highest affinity with a K-i value of 3.3 muM +/- 1.7. The compounds are moderately potent inhibitors of IMP-1 with IC50 values ranging from 5.0 to 17 muM. An original chemical class of IMP-1 inhibitor, 2-((E)-(1,3-dihydroxy-2-methylpropan-2-ylimino)methyl)-4,6-diiodophenol, was discovered and was the most potent with an IC50 of 1.2 muM. NCI compounds, 20707, 140905 and 9746 sensitized a carbapenem-resistant laboratory strain of Escherichia coli to clinically achievable levels of meropenem. (C) 2004 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
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页码:65 / 71
页数:7
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