The evolution of antibiotic resistance is associated with collateral drug phenotypes in Mycobacterium tuberculosis

Natalie J. E. Waller, Chen-Yi Cheung, Gregory M. Cook and Matthew B. McNeil ()
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Natalie J. E. Waller: University of Otago
Chen-Yi Cheung: University of Otago
Gregory M. Cook: University of Otago
Matthew B. McNeil: University of Otago

Nature Communications, 2023, vol. 14, issue 1, 1-15

Abstract: Abstract The increasing incidence of drug resistance in Mycobacterium tuberculosis has diminished the efficacy of almost all available antibiotics, complicating efforts to combat the spread of this global health burden. Alongside the development of new drugs, optimised drug combinations are needed to improve treatment success and prevent the further spread of antibiotic resistance. Typically, antibiotic resistance leads to reduced sensitivity, yet in some cases the evolution of drug resistance can lead to enhanced sensitivity to unrelated drugs. This phenomenon of collateral sensitivity is largely unexplored in M. tuberculosis but has the potential to identify alternative therapeutic strategies to combat drug-resistant strains that are unresponsive to current treatments. Here, by using drug susceptibility profiling, genomics and evolutionary studies we provide evidence for the existence of collateral drug sensitivities in an isogenic collection M. tuberculosis drug-resistant strains. Furthermore, in proof-of-concept studies, we demonstrate how collateral drug phenotypes can be exploited to select against and prevent the emergence of drug-resistant strains. This study highlights that the evolution of drug resistance in M. tuberculosis leads to collateral drug responses that can be exploited to design improved drug regimens.

Date: 2023
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DOI: 10.1038/s41467-023-37184-7

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