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dc.contributor.authorIvin, Masa
dc.contributor.authorDumigan, Amy
dc.contributor.authorde Vasconcelos, Filipe N
dc.contributor.authorEbner, Florian
dc.contributor.authorBorroni, Martina
dc.contributor.authorKavirayani, Anoop
dc.contributor.authorPrzybyszewska, Kornelia N
dc.contributor.authorIngram, Rebecca J
dc.contributor.authorLienenklaus, Stefan
dc.contributor.authorKalinke, Ulrich
dc.contributor.authorStoiber, Dagmar
dc.contributor.authorBengoechea, Jose A
dc.contributor.authorKovarik, Pavel
dc.date.accessioned2017-11-29T15:45:30Z
dc.date.available2017-11-29T15:45:30Z
dc.date.issued2017-11
dc.identifier.citationNatural killer cell-intrinsic type I IFN signaling controls Klebsiella pneumoniae growth during lung infection. 2017, 13 (11):e1006696 PLoS Pathog.en
dc.identifier.issn1553-7374
dc.identifier.pmid29112952
dc.identifier.doi10.1371/journal.ppat.1006696
dc.identifier.urihttp://hdl.handle.net/10033/621189
dc.description.abstractKlebsiella pneumoniae is a significant cause of nosocomial pneumonia and an alarming pathogen owing to the recent isolation of multidrug resistant strains. Understanding of immune responses orchestrating K. pneumoniae clearance by the host is of utmost importance. Here we show that type I interferon (IFN) signaling protects against lung infection with K. pneumoniae by launching bacterial growth-controlling interactions between alveolar macrophages and natural killer (NK) cells. Type I IFNs are important but disparate and incompletely understood regulators of defense against bacterial infections. Type I IFN receptor 1 (Ifnar1)-deficient mice infected with K. pneumoniae failed to activate NK cell-derived IFN-γ production. IFN-γ was required for bactericidal action and the production of the NK cell response-amplifying IL-12 and CXCL10 by alveolar macrophages. Bacterial clearance and NK cell IFN-γ were rescued in Ifnar1-deficient hosts by Ifnar1-proficient NK cells. Consistently, type I IFN signaling in myeloid cells including alveolar macrophages, monocytes and neutrophils was dispensable for host defense and IFN-γ activation. The failure of Ifnar1-deficient hosts to initiate a defense-promoting crosstalk between alveolar macrophages and NK cell was circumvented by administration of exogenous IFN-γ which restored endogenous IFN-γ production and restricted bacterial growth. These data identify NK cell-intrinsic type I IFN signaling as essential driver of K. pneumoniae clearance, and reveal specific targets for future therapeutic exploitations.
dc.language.isoenen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.subject.meshAnimalsen
dc.subject.meshDrug Resistance, Multipleen
dc.subject.meshInterferon Type Ien
dc.subject.meshKiller Cells, Naturalen
dc.subject.meshKlebsiella Infectionsen
dc.subject.meshKlebsiella pneumoniaeen
dc.subject.meshMacrophages, Alveolaren
dc.subject.meshMiceen
dc.subject.meshMice, Inbred C57BLen
dc.subject.meshMice, Knockouten
dc.subject.meshReceptor Cross-Talken
dc.subject.meshRespiratory Tract Infectionsen
dc.subject.meshSignal Transductionen
dc.titleNatural killer cell-intrinsic type I IFN signaling controls Klebsiella pneumoniae growth during lung infection.en
dc.typeArticleen
dc.contributor.departmentTWINCORE, Zentrum für experimentelle und klinische Infektionsforschung GmbH, Feodor-Lynen-Str.7 30625 Hannover, Germany.en
dc.identifier.journalPLoS pathogensen
refterms.dateFOA2018-06-13T05:29:18Z
html.description.abstractKlebsiella pneumoniae is a significant cause of nosocomial pneumonia and an alarming pathogen owing to the recent isolation of multidrug resistant strains. Understanding of immune responses orchestrating K. pneumoniae clearance by the host is of utmost importance. Here we show that type I interferon (IFN) signaling protects against lung infection with K. pneumoniae by launching bacterial growth-controlling interactions between alveolar macrophages and natural killer (NK) cells. Type I IFNs are important but disparate and incompletely understood regulators of defense against bacterial infections. Type I IFN receptor 1 (Ifnar1)-deficient mice infected with K. pneumoniae failed to activate NK cell-derived IFN-γ production. IFN-γ was required for bactericidal action and the production of the NK cell response-amplifying IL-12 and CXCL10 by alveolar macrophages. Bacterial clearance and NK cell IFN-γ were rescued in Ifnar1-deficient hosts by Ifnar1-proficient NK cells. Consistently, type I IFN signaling in myeloid cells including alveolar macrophages, monocytes and neutrophils was dispensable for host defense and IFN-γ activation. The failure of Ifnar1-deficient hosts to initiate a defense-promoting crosstalk between alveolar macrophages and NK cell was circumvented by administration of exogenous IFN-γ which restored endogenous IFN-γ production and restricted bacterial growth. These data identify NK cell-intrinsic type I IFN signaling as essential driver of K. pneumoniae clearance, and reveal specific targets for future therapeutic exploitations.


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