Modified HT-SPOTi: an antimicrobial susceptibility testing to evaluate formulated therapeutic combinations against bacterial growth and viability

Navaratnarajah, Anushandan and Daniel, Chris and Bhakta, Sanjib (2024) Modified HT-SPOTi: an antimicrobial susceptibility testing to evaluate formulated therapeutic combinations against bacterial growth and viability. In: Gillespie, S.H. (ed.) Antibiotic Resistance Protocols. Methods in Molecular Biology 2833 2833. Springer Publications, pp. 35-42. ISBN 9781071639801.

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Official URL: https://doi.org/10.1007/978-1-0716-3981-8_4

Abstract

Antimicrobial resistance (AMR) poses a serious threat to global health, potentially causing 10 million deaths per year globally by 2050. To tackle AMR, researchers from all around the world have generated a selection of various formulated (viz. nanoparticulate, liposomal) therapeutic combinations to be evaluated for new antimicrobial drug discovery. To meet the urgent need for accelerating new antibacterial drug development, we need rapid but reliable whole-cell assay methods and models to test formulated therapeutic combinations against several pathogens in different in vitro conditions as models of actual infections. Over the past two decades, high-throughput spot-culture growth inhibition assay (HT-SPOTi) has been demonstrated to be a gold-standard drug susceptibility method for evaluating novel chemotherapeutic entities and existing drugs against various microbes of global concern. Our modified HT-SPOTi method serves the purpose of evaluating drug combinations against Gram-positive/negative microorganisms as well as acid-fast bacilli. The newly developed and modified HT-SPOTi assay builds upon the limitations of our previously published method to incorporate antimicrobial susceptibility testing with formulated therapeutic combinations. The modified HT-SPOTi is compared with a range of other antimicrobial susceptibility testing methods and validated using a library of existing antibiotics as well as formulated therapeutic combinations. The modified HT-SPOTi assay can serve as an efficient and reliable high-throughput drug screening platform to discover new potential antimicrobial molecules, including as part of therapeutic formulations. This chapter describes the generation of drug susceptibility profile for formulated therapeutic combinations using modified HT-SPOTi in a semi-automated system.

Metadata

Item Type:	Book Section
School:	Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences
Depositing User:	Administrator
Date Deposited:	20 Aug 2024 16:44
Last Modified:	21 Aug 2024 13:46
URI:	https://eprints.bbk.ac.uk/id/eprint/54131

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