Trush, M.M.* ; Kovalishyn, V.* ; Hodyna, D.* ; Golovchenko, O.V.* ; Chumachenko, S.* ; Tetko, I.V. ; Brovarets, V.S.* ; Metelytsia, L.*
In silico and in vitro studies of a number PILs as new antibacterials against MDR clinical isolate Acinetobacter baumannii.
Chem. Biol. Drug Des. 95, 624-630 (2020)
QSAR analysis of a set of previously synthesized phosphonium ionic liquids (PILs) tested against Gram-negative multidrug-resistant clinical isolate Acinetobacter baumannii was done using the Online Chemical Modeling Environment (OCHEM). To overcome the problem of overfitting due to descriptor selection, fivefold cross-validation with variable selection in each step of the model development was applied. The predictive ability of the classification models was tested by cross-validation, giving balanced accuracies (BA) of 76%-82%. The validation of the models using an external test set proved that the models can be used to predict the activity of newly designed compounds with a reasonable accuracy within the applicability domain (BA = 83%-89%). The models were applied to screen a virtual chemical library with expected activity of compounds against MDR Acinetobacter baumannii. The eighteen most promising compounds were identified, synthesized, and tested. Biological testing of compounds was performed using the disk diffusion method in Mueller-Hinton agar. All tested molecules demonstrated high anti-A. baumannii activity and different toxicity levels. The developed classification SAR models are freely available online at and could be used by scientists for design of new more effective antibiotics.
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Publication type
Article: Journal article
Document type
Scientific Article
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Keywords
Acinetobacter Baumanii ; Antibacterial Activity ; Machine Learning ; Ochem ; Phosphonium Ionic Liquids; Antimicrobial Resistance; Phosphonium; Susceptibility; Derivatives; Inhibitors
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Language
english
Publication Year
2020
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HGF-reported in Year
2020
ISSN (print) / ISBN
1747-0277
e-ISSN
1747-0285
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Volume: 95,
Issue: 6,
Pages: 624-630
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Blackwell
Publishing Place
Los Angeles, Calif.
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Peer reviewed
POF-Topic(s)
30203 - Molecular Targets and Therapies
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-503000-001
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Erfassungsdatum
2020-04-16