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2016 ; 6
(ä): 37815
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Mint3/Apba3 depletion ameliorates severe murine influenza pneumonia and
macrophage cytokine production in response to the influenza virus
#MMPMID27883071
Uematsu T
; Fujita T
; Nakaoka HJ
; Hara T
; Kobayashi N
; Murakami Y
; Seiki M
; Sakamoto T
Sci Rep
2016[Nov]; 6
(ä): 37815
PMID27883071
show ga
Influenza virus (IFV) infection is a common cause of severe pneumonia. Studies
have suggested that excessive activation of the host immune system including
macrophages is responsible for the severe pathologies mediated by IFV infection.
Here, we focused on the X11 protein family member Mint3/Apba3, known to promote
ATP production via glycolysis by activating hypoxia inducible factor-1 (HIF-1) in
macrophages, and examined its roles in lung pathogenesis and anti-viral defence
upon IFV infection. Mint3-deficient mice exhibited improved influenza pneumonia
with reduced inflammatory cytokines/chemokine levels and neutrophil infiltration
in the IFV-infected lungs without alteration in viral burden, type-I interferon
production, or acquired immunity. In macrophages, Mint3 depletion attenuated
NF-?B signalling and the resultant cytokine/chemokine production in response to
IFV infection by increasing I?B? and activating the cellular energy sensor AMPK,
respectively. Thus, Mint3 might represent one of the likely therapeutic targets
for the treatment of severe influenza pneumonia without affecting host anti-viral
defence through suppressing macrophage cytokine/chemokine production.
|Adaptor Proteins, Signal Transducing/*metabolism
[MESH]