Small polar hits against S. aureus: screening, initial hit optimization, and metabolomic studies

Lim, A. S. T., Vincent, I. M. , Barrett, M. P. and Gilbert, I. H. (2019) Small polar hits against S. aureus: screening, initial hit optimization, and metabolomic studies. ACS Omega, 4(21), pp. 19199-19215. (doi: 10.1021/acsomega.9b02507) (PMID:31763544) (PMCID:PMC6869403)

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Abstract

The global prevalence of antibacterial resistance requires new antibacterial drugs with novel chemical scaffolds and modes of action. It is also vital to design compounds with optimal physicochemical properties to permeate the bacterial cell envelope. We described an approach of combining and integrating whole cell screening and metabolomics into early antibacterial drug discovery using a library of small polar compounds. Whole cell screening of a diverse library of small polar compounds against Staphylococcus aureus gave compound 2. Hit expansion was carried out to determine structure–activity relationships. A selection of compounds from this series, together with other screened active compounds, was subjected to an initial metabolomics study to provide a metabolic fingerprint of the mode of action. It was found that compound 2 and its analogues have a different mode of action from some of the known antibacterial compounds tested. This early study highlighted the potential of whole cell screening and metabolomics in early antibacterial drug discovery. Future works will require improving potency and performing orthogonal studies to confirm the modes of action.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Vincent, Dr Isabel and Barrett, Professor Michael
Authors: Lim, A. S. T., Vincent, I. M., Barrett, M. P., and Gilbert, I. H.
College/School:College of Medical Veterinary and Life Sciences > School of Cancer Sciences
College of Medical Veterinary and Life Sciences > School of Infection & Immunity
Journal Name:ACS Omega
Publisher:American Chemical Society
ISSN:2470-1343
ISSN (Online):2470-1343
Published Online:04 November 2019
Copyright Holders:Copyright © 2019 American Chemical Society
First Published:First published in ACS Omega 4(21): 19199-19215
Publisher Policy:Reproduced under a Creative Commons License

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