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High-Throughput Screening for Inhibitors of Wall Teichoic Acid Biosynthesis in Staphylococcus aureus

  • Omar M. El-Halfawy
  • Eric D. BrownEmail author
Protocol
Part of the Methods in Molecular Biology book series (MIMB, volume 1954)

Abstract

The world is heading toward a dangerous post-antibiotic era where antibiotics fail to treat infections. Staphylococcus aureus is the leading cause of healthcare-associated infections worldwide, and an ever-increasing percentage of them are methicillin-resistant (MRSA). New strategies are urgently needed to combat this pathogen. Wall teichoic acids (WTA) in S. aureus are polyribitol phosphate polymers that play important roles in virulence and resistance to β-lactam antibiotics. Here, we describe a high-throughput whole-cell screening platform for inhibitors targeting WTA biosynthesis. This platform takes advantage of the unique dispensability patterns of genes encoding WTA biosynthesis. We further describe follow-up dose-response assays to identify WTA inhibitors among the primary bioactives. WTA inhibitors offer an exciting opportunity for the development of novel antibacterial leads of unique mechanism in the fight against drug-resistant staphylococcal infections.

Key words

Small-molecule screening Small-molecule library Wall teichoic acid Antagonism screen Antibiotic Antibacterial Staphylococcus aureus 

Notes

Acknowledgments

The authors would like to thank Dr. Maya Farha for her critical reading of the manuscript. Wall teichoic acid related research in the authors’ laboratory was supported by grants from the Canadian Institutes of Health Research and from the Canadian glycomics network (GlycoNet) and a Tier I Canada Research Chair award to E.D.B. O.M.E. was supported by a Michael G. DeGroote Fellowship Award in Basic Biomedical Science.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Biochemistry and Biomedical SciencesMcMaster UniversityHamiltonCanada
  2. 2.Michael G. DeGroote Institute of Infectious Disease ResearchMcMaster UniversityHamiltonCanada
  3. 3.Microbiology and Immunology Department, Faculty of PharmacyAlexandria UniversityAlexandriaEgypt

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