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2016 ; 8
(9
): 1099-112
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IFN? is a potent anti-influenza therapeutic without the inflammatory side effects
of IFN? treatment
#MMPMID27520969
Davidson S
; McCabe TM
; Crotta S
; Gad HH
; Hessel EM
; Beinke S
; Hartmann R
; Wack A
EMBO Mol Med
2016[Sep]; 8
(9
): 1099-112
PMID27520969
show ga
Influenza A virus (IAV)-induced severe disease is characterized by infected lung
epithelia, robust inflammatory responses and acute lung injury. Since type I
interferon (IFN??) and type III interferon (IFN?) are potent antiviral cytokines
with immunomodulatory potential, we assessed their efficacy as IAV treatments.
IFN? treatment of IAV-infected Mx1-positive mice lowered viral load and protected
from disease. IFN? treatment also restricted IAV replication but exacerbated
disease. IFN? treatment increased pulmonary proinflammatory cytokine secretion,
innate cell recruitment and epithelial cell death, unlike IFN?-treatment. IFN?
lacked the direct stimulatory activity of IFN? on immune cells. In epithelia,
both IFNs induced antiviral genes but no inflammatory cytokines. Similarly, human
airway epithelia responded to both IFN? and IFN? by induction of antiviral genes
but not of cytokines, while hPBMCs responded only to IFN?. The restriction of
both IFN? responsiveness and productive IAV replication to pulmonary epithelia
allows IFN? to limit IAV spread through antiviral gene induction in relevant
cells without overstimulating the immune system and driving immunopathology. We
propose IFN? as a non-inflammatory and hence superior treatment option for human
IAV infection.
|Animals
[MESH]
|Cell Death
[MESH]
|Cytokines/analysis
[MESH]
|Disease Models, Animal
[MESH]
|Epithelial Cells/physiology
[MESH]
|Humans
[MESH]
|Influenza A virus/isolation & purification
[MESH]