Candida expansion in the gut of lung cancer patients associates with an ecological signature that supports growth under dysbiotic conditions

Bastian Seelbinder, Zoltan Lohinai, Ruben Vazquez-Uribe, Sascha Brunke, Xiuqiang Chen, Mohammad Mirhakkak, Silvia Garcia Lopéz, Balazs Dome, Zsolt Megyesfalvi, Judit Berta, Gabriella Galffy, Edit Dulka, Anja Wellejus, Glen J. Weiss, Michael Bauer, Bernhard Hube, Morten O.A. Sommer, Gianni Panagiotou*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Candida species overgrowth in the human gut is considered a prerequisite for invasive candidiasis, but our understanding of gut bacteria promoting or restricting this overgrowth is still limited. By integrating cross-sectional mycobiome and shotgun metagenomics data from the stool of 75 male and female cancer patients at risk but without systemic candidiasis, bacterial communities in high Candida samples display higher metabolic flexibility yet lower contributional diversity than those in low Candida samples. We develop machine learning models that use only bacterial taxa or functional relative abundances to predict the levels of Candida genus and species in an external validation cohort with an AUC of 78.6–81.1%. We propose a mechanism for intestinal Candida overgrowth based on an increase in lactate-producing bacteria, which coincides with a decrease in bacteria that regulate short chain fatty acid and oxygen levels. Under these conditions, the ability of Candida to harness lactate as a nutrient source may enable Candida to outcompete other fungi in the gut.

Original languageEnglish
Article number2673
JournalNature Communications
Volume14
Issue number1
ISSN2041-1723
DOIs
Publication statusPublished - 2023

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