期刊
NATURE MEDICINE
卷 22, 期 8, 页码 906-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nm.4141
关键词
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资金
- US National Institutes of Health [R01 AI090901, R01 AI123253, R21 AI117547]
- American Heart Association (AHA Great Rivers Associate Grant-in-Aid grant) [16GRNT26990004]
- Ohio State University College of Medicine
- Wellcome Trust
- Medical Research Council [MR/N006364/1] Funding Source: researchfish
- MRC [MR/N006364/1] Funding Source: UKRI
Disseminated candidiasis has become one of the leading causes of hospital-acquired blood stream infections with high mobility and mortality. However, the molecular basis of host defense against disseminated candidiasis remains elusive, and treatment options are limited. Here we report that the E3 ubiquitin ligase CBLB directs polyubiquitination of dectin-1 and dectin-2, two key pattern-recognition receptors for sensing Candida albicans, and their downstream kinase SYK, thus inhibiting dectin-1-and dectin-2-mediated innate immune responses. CBLB deficiency or inactivation protects mice from systemic infection with a lethal dose of C. albicans, and deficiency of dectin-1, dectin-2, or both in Cblb(-/-) mice abrogates this protection. Notably, silencing the Cblb gene in vivo protects mice from lethal systemic C. albicans infection. Our data reveal that CBLB is crucial for homeostatic control of innate immune responses mediated by dectin-1 and dectin-2. Our data also indicate that CBLB represents a potential therapeutic target for protection from disseminated candidiasis.
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