Competitive fungal commensalism mitigates candidiasis pathology

Author:

Sekeresova Kralova Jarmila1ORCID,Donic Catalina1ORCID,Dassa Bareket2ORCID,Livyatan Ilana3ORCID,Jansen Paul Mathias4ORCID,Ben-Dor Shifra2ORCID,Fidel Lena2ORCID,Trzebanski Sébastien1ORCID,Narunsky-Haziza Lian3ORCID,Asraf Omer5ORCID,Brenner Ori6ORCID,Dafni Hagit6ORCID,Jona Ghil2ORCID,Boura-Halfon Sigalit1ORCID,Stettner Noa6ORCID,Segal Eran3ORCID,Brunke Sascha4ORCID,Pilpel Yitzhak5ORCID,Straussman Ravid3ORCID,Zeevi David7ORCID,Bacher Petra89ORCID,Hube Bernhard410ORCID,Shlezinger Neta11ORCID,Jung Steffen1ORCID

Affiliation:

1. Weizmann Institute of Science 1 Departments of Immunology and Regenerative Biology, , Rehovot, Israel

2. Life Sciences Core Facilities, Weizmann Institute of Science 2 , Rehovot, Israel

3. Molecular Cell Biology, Weizmann Institute of Science 3 , Rehovot, Israel

4. Leibniz Institute for Natural Product Research and Infection Biology—Hans Knoell Institute Jena (HKI) 4 Department of Microbial Pathogenicity Mechanisms, , Jena, Germany

5. Molecular Genetics, Weizmann Institute of Science 5 , Rehovot, Israel

6. Veterinary Resources, Weizmann Institute of Science 6 , Rehovot, Israel

7. Plant and Environmental Sciences, Weizmann Institute of Science 7 , Rehovot, Israel

8. Institute of Immunology, Christian-Albrecht-University of Kiel 8 , Kiel, Germany

9. Institute of Clinical Molecular Biology, Christian-Albrecht-University of Kiel 9 , Kiel, Germany

10. Institute of Microbiology, Friedrich Schiller University 10 , Jena, Germany

11. The Robert H. Smith Faculty of Agriculture, Food and Environment The Hebrew University of Jerusalem 11 , Rehovot, Israel

Abstract

The mycobiota are a critical part of the gut microbiome, but host–fungal interactions and specific functional contributions of commensal fungi to host fitness remain incompletely understood. Here, we report the identification of a new fungal commensal, Kazachstania heterogenica var. weizmannii, isolated from murine intestines. K. weizmannii exposure prevented Candida albicans colonization and significantly reduced the commensal C. albicans burden in colonized animals. Following immunosuppression of C. albicans colonized mice, competitive fungal commensalism thereby mitigated fatal candidiasis. Metagenome analysis revealed K. heterogenica or K. weizmannii presence among human commensals. Our results reveal competitive fungal commensalism within the intestinal microbiota, independent of bacteria and immune responses, that could bear potential therapeutic value for the management of C. albicans–mediated diseases.

Funder

Israeli Science Foundation

Weizmann Institute

Morris Kahn Institute for Human Immunology

Henry H. Drake Professorial Chair of Immunology

Deutsche Forschungsgemeinschaft

Publisher

Rockefeller University Press

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