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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Mucosal+Immunol
2017 ; 10
(4
): 1043-1055
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IL-36 receptor deletion attenuates lung injury and decreases mortality in murine
influenza pneumonia
#MMPMID27966554
Aoyagi T
; Newstead MW
; Zeng X
; Kunkel SL
; Kaku M
; Standiford TJ
Mucosal Immunol
2017[Jul]; 10
(4
): 1043-1055
PMID27966554
show ga
Influenza virus causes a respiratory disease in humans that can progress to lung
injury with fatal outcome. The interleukin (IL)-36 cytokines are newly described
IL-1 family cytokines that promote inflammatory responses via binding to the
IL-36 receptor (IL-36R). The mechanism of expression and the role of IL-36
cytokines are poorly understood. Here, we investigated the role of IL-36
cytokines in modulating the innate inflammatory response during influenza
virus-induced pneumonia in mice. The intranasal administration of influenza virus
upregulated IL-36? mRNA and protein production in the lungs. In vitro, influenza
virus-mediated IL-36? but not IL-36? is induced and secreted from alveolar
epithelial cells (AECs) through both a caspase-1 and caspase-3/7 dependent
pathway. IL-36? was detected in microparticles shed from AECs and promoted the
production of pro-inflammatory cytokines and chemokines in respiratory cells.
IL-36R-deficient mice were protected from influenza virus-induced lung injury and
mortality. Decreased mortality was associated with significantly reduced early
accumulation of neutrophils and monocytes/macrophages, activation of lymphocytes,
production of pro-inflammatory cytokines and chemokines, and permeability of the
alveolar-epithelial barrier in despite impaired viral clearance. Taken together,
these data indicate that IL-36 ligands exacerbate lung injury during influenza
virus infection.