Synergy of the antibiotic colistin with echinocandin antifungals in Candida species
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OBJECTIVES: Candida albicans is the most prevalent fungal pathogen of humans, causing a wide range of infections from harmless superficial to severe systemic infections. Improvement of the antifungal arsenal is needed since existing antifungals can be associated with limited efficacy, toxicity and antifungal resistance. Here we aimed to identify compounds that act synergistically with echinocandin antifungals and that could contribute to a faster reduction of the fungal burden. METHODS: A total of 38 758 compounds were tested for their ability to act synergistically with aminocandin, a β-1,3-glucan synthase inhibitor of the echinocandin family of antifungals. The synergy between echinocandins and an identified hit was studied with chemogenomic screens and testing of individual Saccharomyces cerevisiae and C. albicans mutant strains. RESULTS: We found that colistin, an antibiotic that targets membranes in Gram-negative bacteria, is synergistic with drugs of the echinocandin family against all Candida species tested. The combination of colistin and aminocandin led to faster and increased permeabilization of C. albicans cells than either colistin or aminocandin alone. Echinocandin susceptibility was a prerequisite to be able to observe the synergy. A large-scale screen for genes involved in natural resistance of yeast cells to low doses of the drugs, alone or in combination, identified efficient sphingolipid and chitin biosynthesis as necessary to protect S. cerevisiae and C. albicans cells against the antifungal combination. CONCLUSIONS: These results suggest that echinocandin-mediated weakening of the cell wall facilitates colistin targeting of fungal membranes, which in turn reinforces the antifungal activity of echinocandins.
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Screens of chemical libraries have identified compounds that disrupt formation and/or maintenance of biofilms.
“Screens of chemical libraries have identified compounds that disrupt formation and/or maintenance of biofilms (25, 101, 185, 210).”
From <i>Candida albicans</i> Biofilms and Human Disease (2015) · cites this paper as [210]
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- Authors
- Zeidler, U., Bougnoux, M.-E., Lupan, A., Helynck, O., Doyen, A., Garcia, Z., Sertour, N., Clavaud, C., Munier-Lehmann, H., Saveanu, C., & d'Enfert, C.
- Affiliations
- Institut Pasteur (FR)
- Hôpital Necker-Enfants Malades (FR)
- Centre National de la Recherche Scientifique (FR)
- Venue
- Journal of Antimicrobial Chemotherapy
- Publisher
- Oxford University Press (OUP)
- Published
- 2013-02-01
- Volume
- 68
- Issue
- 6
- Pages
- 1285-1296
- ISSN
- 0305-7453 (ISSN-L)
- 1460-2091
- OpenAlex
- W2128824216
- Cited by
- 58
- References
- 72
- Citations by year
- 2026: 1 · 2025: 5 · 2024: 3 · 2023: 2 · 2022: 6 · 2021: 8 · 2020: 6 · 2019: 6 · 2018: 2 · 2017: 6 · 2016: 5 · 2015: 3 · 2014: 1 · 2013: 4
- FWCI
- 3.15
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Journal of Antimicrobial Chemotherapy (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion, cc-by-nc-sa)
- HighWire Press Open Archive (submittedVersion)
- Funders
- Jawaharlal Nehru University
- University of Aberdeen
- Agence Nationale de la Recherche (ANR-08-JCJC-0019)
- Centre Hospitalier Universitaire Vaudois
- Topics
- Health Sciences › Medicine › Infectious Diseases › Antifungal resistance and susceptibility
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fungal and yeast genetics research
- Life Sciences › Immunology and Microbiology › Microbiology › Antimicrobial Peptides and Activities
- Keywords
- colistin, echinocandins, Candida albicans, Candida species, drug synergy, combination antifungal therapy, cell wall integrity, sphingolipid biosynthesis, chitin synthesis, antifungal resistance, Saccharomyces cerevisiae
- MeSH terms
- Animals, Antifungal Agents, Candida, Candidiasis, Cell Membrane Permeability, Cell Wall, Chitin, Colistin, Drug Synergism, Coloring Agents, Genotype, Indicator Dilution Techniques, Mice, Inbred BALB C, Microbial Sensitivity Tests, Mutation, Propidium, Saccharomyces cerevisiae, Sphingolipids, Gene Library, Mice, Echinocandins, Lipopeptides, Genetic Fitness
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