Nontoxic antimicrobials that evade drug resistance
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Lindquist_Non-toxic antimicrobials.pdf
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Author(s)
Davis, Stephen A
Endo, Matthew M
Whitesell, Luke
Marchillo, Karen
Andes, David R
Burke, Martin D
Vincent, Benjamin Matteson
Lindquist, Susan
Date Issued
April 2015
Journal
Nature Chemical Biology
Publisher
Nature Publishing Group
Citation
Davis, Stephen A et al. “Nontoxic Antimicrobials That Evade Drug Resistance.” Nature Chemical Biology 11.7 (2015): 481–487.
Version
Author's final manuscript
Abstract
Drugs that act more promiscuously provide fewer routes for the emergence of resistant mutants. This benefit, however, often comes at the cost of serious off-target and dose-limiting toxicities. The classic example is the antifungal amphotericin B (AmB), which has evaded resistance for more than half a century. We report markedly less toxic amphotericins that nevertheless evade resistance. They are scalably accessed in just three steps from the natural product, and they bind their target (the fungal sterol ergosterol) with far greater selectivity than AmB. Hence, they are less toxic and far more effective in a mouse model of systemic candidiasis. To our surprise, exhaustive efforts to select for mutants resistant to these more selective compounds revealed that they are just as impervious to resistance as AmB. Thus, highly selective cytocidal action and the evasion of resistance are not mutually exclusive, suggesting practical routes to the discovery of less toxic, resistance-evasive therapies.
MIT Department
Massachusetts Institute of Technology. Department of Biology
Whitehead Institute for Biomedical Research
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1038/nchembio.1821
