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.
Original language | English |
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Article number | e20231686 |
Journal | Journal of Experimental Medicine |
Volume | 221 |
Issue number | 5 |
Early online date | 18 Mar 2024 |
DOIs | |
Publication status | Published - 6 May 2024 |
Bibliographical note
We would like to thank J. Berman (Tel Aviv University, Tel Aviv, Israel) for providing the recombinant C. albicans (SC5314) reporter strain, Travis W. Adkins, (NRRL collection) for prompt yeast delivery, J. Zahradnik and G. Schreiber (Weizmann Institute, Rehovot, Israel) for the plasmid encoding the modified miRFP670 fluorescent protein, M. Lotan-Pompan and A. Weinberger for help with the bioinformatic analysis, S. Schäuble and M. Mirhakkak for providing the R script for the Biolog data analysis, C. Bar-Natan for help with the germ-free animal experiment, and L.P. Coelho for helping with access to the metagenomes.S. Jung was funded by the Israeli Science Foundation (grant #696/21) and by the Bridge, Innovate, Nurture, Advance program of the Weizmann Institute. This research was generously supported by Morris Kahn Institute for Human Immunology. S. Jung is the incumbent of the Henry H. Drake Professorial Chair of Immunology. P.M. Jansen, S. Brunke, and B. Hube were funded by the Deutsche Forschungsgemeinschaft (DFG) through the Cluster of Excellence “Balance of the Microverse,” DFG project number 390713860. P. Bacher was funded by the Cluster of Excellence EXC2167 “Precision Medicine in Chronic Inflammation,” Project ID 390884018.
Author contributions: J. Sekeresova Kralova made the initial observation and conceived the project with S. Jung. C. Donic performed the yeast quantifications and serum titer analysis. S. Boura-Halfon and S. Trzebanski provided animals and helped with analysis. S. Ben-Dor and L. Fidel performed the genome analysis. B. Dassa, I. Livyatan, L. Narunsky-Haziza, O. Asraf, D. Zeevi, E. Segal, Y. Pilpel, and R. Straussman contributed the human microbiome analysis. P. Bacher performed human T cell analysis. P.M. Jansen, S. Brunke, and B. Hube performed the Biolog analysis. G. Jona helped with yeast culture. O. Brenner performed histology. H. Dafni and N. Stettner helped with the sentinel screen and germ-free analysis. N. Stettner advised on yeast biology and helped in generating the reporter strain. P. Bacher, B. Hube, S. Brunke, J.S. Kralova, and S. Jung wrote the manuscript.
All Science Journal Classification (ASJC) codes
- Immunology and Allergy
- Immunology