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An oxylipin signal confers protection against antifungal echinocandins in pathogenic aspergilli

Author

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  • Dante G. Calise

    (University of Wisconsin–Madison
    University of Wisconsin–Madison)

  • Sung Chul Park

    (University of Wisconsin–Madison)

  • Jin Woo Bok

    (University of Wisconsin–Madison)

  • Gustavo H. Goldman

    (Universidade de São Paulo
    National Institute of Science and Technology in Human Pathogenic Fungi)

  • Nancy P. Keller

    (University of Wisconsin–Madison
    University of Wisconsin–Madison)

Abstract

Aspergillus fumigatus is the leading causative agent of life-threatening invasive aspergillosis in immunocompromised individuals. One antifungal class used to treat Aspergillus infections is the fungistatic echinocandins, semisynthetic drugs derived from naturally occurring fungal lipopeptides. By inhibiting beta-1,3-glucan synthesis, echinocandins cause both fungistatic stunting of hyphal growth and repeated fungicidal lysis of apical tip compartments. Here, we uncover an endogenous mechanism of echinocandin tolerance in A. fumigatus whereby the inducible oxylipin signal 5,8-diHODE confers protection against tip lysis via the transcription factor ZfpA. Treatment of A. fumigatus with echinocandins induces 5,8-diHODE synthesis by the fungal oxygenase PpoA in a ZfpA dependent manner resulting in a positive feedback loop. This protective 5,8-diHODE/ZfpA signaling relay is conserved among diverse isolates of A. fumigatus and in two other Aspergillus pathogens. Our findings reveal an oxylipin-directed growth program—possibly arisen through natural encounters with native echinocandin producing fungi—that enables echinocandin tolerance in pathogenic aspergilli.

Suggested Citation

  • Dante G. Calise & Sung Chul Park & Jin Woo Bok & Gustavo H. Goldman & Nancy P. Keller, 2024. "An oxylipin signal confers protection against antifungal echinocandins in pathogenic aspergilli," Nature Communications, Nature, vol. 15(1), pages 1-15, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-48231-2
    DOI: 10.1038/s41467-024-48231-2
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    References listed on IDEAS

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    1. Mengyao Niu & Breanne N. Steffan & Gregory J. Fischer & Nandhitha Venkatesh & Nicholas L. Raffa & Molly A. Wettstein & Jin Woo Bok & Claudio Greco & Can Zhao & Erwin Berthier & Ernst Oliw & David Beeb, 2020. "Fungal oxylipins direct programmed developmental switches in filamentous fungi," Nature Communications, Nature, vol. 11(1), pages 1-13, December.
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