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Human defects in STAT3 promote oral mucosal fungal and bacterial dysbiosis.

ABSTRACT: Studies in patients with genetic defects can provide unique insights regarding the role of specific genes and pathways in humans. Patients with defects in the Th17/IL-17 axis, such as patients harboring loss-of-function STAT3 mutations (autosomal-dominant hyper IgE syndrome; AD-HIES) present with recurrent oral fungal infections. Our studies aimed to comprehensively evaluate consequences of STAT3 deficiency on the oral commensal microbiome. We characterized fungal and bacterial communities in AD-HIES in the presence and absence of oral fungal infection compared with healthy volunteers. Analyses of oral mucosal fungal communities in AD-HIES revealed severe dysbiosis with dominance of Candida albicans (C. albicans) in actively infected patients and minimal representation of health-associated fungi and/or opportunists. Bacterial communities also displayed dysbiosis in AD-HIES, particularly in the setting of active Candida infection. Active candidiasis was associated with decreased microbial diversity and enrichment of the streptococci Streptococcus oralis (S. oralis) and S. mutans, suggesting an interkingdom interaction of C. albicans with oral streptococci. Increased abundance of S. mutans was consistent with susceptibility to dental caries in AD-HIES. Collectively, our findings illustrate a critical role for STAT3/Th17 in the containment of C. albicans as a commensal organism and an overall contribution in the establishment of fungal and bacterial oral commensal communities.

SUBMITTER: Abusleme L

PROVIDER: S-EPMC6171814 | biostudies-other | 2018 Sep

REPOSITORIES: biostudies-other

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Human defects in STAT3 promote oral mucosal fungal and bacterial dysbiosis.

Abusleme Loreto L Diaz Patricia I PI Freeman Alexandra F AF Greenwell-Wild Teresa T Brenchley Laurie L Desai Jigar V JV Ng Weng-Ian WI Holland Steven M SM Lionakis Michail S MS Segre Julia A JA Kong Heidi H HH Moutsopoulos Niki M NM

JCI insight 20180906 17

Studies in patients with genetic defects can provide unique insights regarding the role of specific genes and pathways in humans. Patients with defects in the Th17/IL-17 axis, such as patients harboring loss-of-function STAT3 mutations (autosomal-dominant hyper IgE syndrome; AD-HIES) present with recurrent oral fungal infections. Our studies aimed to comprehensively evaluate consequences of STAT3 deficiency on the oral commensal microbiome. We characterized fungal and bacterial communities in AD ...[more]

PMID: 30185668

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Human defects in STAT3 promote oral mucosal fungal and bacterial dysbiosis.

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Human defects in STAT3 promote oral mucosal fungal and bacterial dysbiosis.

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