Abstract:
:Candida albicans is a ubiquitous mucosal commensal that is normally prevented from causing acute or chronic invasive disease. Neutrophils contribute to protection in oral infection but exacerbate vulvovaginal candidiasis. To dissect the role of neutrophils during mucosal candidiasis, we took advantage of a new, transparent zebrafish swim bladder infection model. Intravital microscopic tracking of individual animals revealed that the blocking of neutrophil recruitment leads to rapid mortality in this model through faster disease progression. Conversely, artificial recruitment of neutrophils during early infection reduces disease pressure. Noninvasive longitudinal tracking showed that mortality is a consequence of C. albicans breaching the epithelial barrier and invading surrounding tissues. Accordingly, we found that a hyperfilamentous C. albicans strain breaches the epithelial barrier more frequently and causes mortality in immunocompetent zebrafish. A lack of neutrophils at the infection site is associated with less fungus-associated extracellular DNA and less damage to fungal filaments, suggesting that neutrophil extracellular traps help to protect the epithelial barrier from C. albicans breach. We propose a homeostatic model where C. albicans disease pressure is balanced by neutrophil-mediated damage of fungi, maintaining this organism as a commensal while minimizing the risk of damage to host tissue. The unequaled ability to dissect infection dynamics at a high spatiotemporal resolution makes this zebrafish model a unique tool for understanding mucosal host-pathogen interactions.
journal_name
Infect Immunjournal_title
Infection and immunityauthors
Gratacap RL,Scherer AK,Seman BG,Wheeler RTdoi
10.1128/IAI.00276-17subject
Has Abstractpub_date
2017-08-18 00:00:00issue
9eissn
0019-9567issn
1098-5522pii
IAI.00276-17journal_volume
85pub_type
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journal_title:Infection and immunity
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.51.1.49-53.1986
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journal_title:Infection and immunity
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journal_title:Infection and immunity
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journal_title:Infection and immunity
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.32.1.295-299.1981
更新日期:1981-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.32.2.840-851.1981
更新日期:1981-05-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.9.3.576-590.1974
更新日期:1974-03-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:1993-07-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.18.1.257-259.1977
更新日期:1977-10-01 00:00:00
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更新日期:2007-03-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:1984-03-01 00:00:00
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journal_title:Infection and immunity
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更新日期:2005-02-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.52.1.1-5.1986
更新日期:1986-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:2018-06-21 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.32.1.169-172.1981
更新日期:1981-04-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:2002-10-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.53.2.317-323.1986
更新日期:1986-08-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
doi:10.1128/IAI.00291-07
更新日期:2007-08-01 00:00:00
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journal_title:Infection and immunity
pub_type: 杂志文章
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更新日期:1997-10-01 00:00:00