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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
2018 ; 11
(1
): 209-219
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IFN-? increases susceptibility to influenza A infection through suppression of
group II innate lymphoid cells
#MMPMID28513592
Califano D
; Furuya Y
; Roberts S
; Avram D
; McKenzie ANJ
; Metzger DW
Mucosal Immunol
2018[Jan]; 11
(1
): 209-219
PMID28513592
show ga
Increased levels of interferon-? (IFN-?) are routinely observed in the
respiratory tract following influenza virus infection, yet its potential role
remains unclear. We now demonstrate that influenza-induced IFN-? restricts
protective innate lymphoid cell group II (ILC2) function in the lung following
challenge with the pandemic H1N1 A/CA/04/2009 (CA04) influenza virus.
Specifically, IFN-? deficiency resulted in enhanced ILC2 activity, characterized
by increased production of interleukin (IL)-5 and amphiregulin, and improved
tissue integrity, yet no change in ILC2 numbers, viral load or clearance. We
further found that IFN-?-deficient mice, as well as wild-type animals treated
with neutralizing anti-IFN-? antibody, exhibited decreased susceptibility to
lethal infection with H1N1 CA04 influenza virus, and moreover that survival was
dependent on the presence of IL-5. The beneficial effects of IFN-? neutralization
were not observed in ILC2-deficient animals. These data support the novel concept
that IFN-? can have a detrimental role in the pathogenesis of influenza through a
restriction in ILC2 activity. Thus, regulation of ILC2 activity is a potential
target for post-infection therapy of influenza.
|Animals
[MESH]
|Antibodies, Blocking/metabolism
[MESH]
|Cells, Cultured
[MESH]
|Disease Susceptibility
[MESH]
|Immunity, Innate
[MESH]
|Immunosuppression Therapy
[MESH]
|Influenza A Virus, H1N1 Subtype/*immunology
[MESH]