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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 J+Immunol
2014 ; 192
(8
): 3569-81
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Axl receptor blockade ameliorates pulmonary pathology resulting from primary
viral infection and viral exacerbation of asthma
#MMPMID24659691
Shibata T
; Habiel DM
; Coelho AL
; Kunkel SL
; Lukacs NW
; Hogaboam CM
J Immunol
2014[Apr]; 192
(8
): 3569-81
PMID24659691
show ga
Viruses use Tyro3, Axl, and Mertk (TAM) receptor tyrosine kinases to infect and
modulate the immune properties of various cell types, which led us to investigate
whether TAM receptor activation affected primary viral infection and viral
exacerbation of asthma in experimental models. In these lung-specific models, we
observed that Axl was the most abundantly induced TAM receptor protein. During
primary respiratory syncytial virus (RSV) infection, anti-Axl mAb treatment
significantly increased the number of IFN-?-producing T cells and NK cells and
significantly suppressed RSV replication and whole lung levels of IL-4 and IL-13.
Intrapulmonary H1N1 infection induced lethal pulmonary inflammation, but anti-Axl
mAb treatment of infected mice significantly increased the number of
IFN-?-producing macrophages and dendritic cells and significantly suppressed
neutrophil infiltration. Consequently, the lethal effect of H1N1 infection in
this model was significantly reduced in the mAb-treated group compared with the
IgG control-treated group. Targeting Axl also inhibited airway
hyperresponsiveness, IL-4 and IL-13 production, and goblet cell metaplasia in an
Aspergillus fumigatus-induced asthma model. Finally, infection of mice with RSV
during fungal asthma significantly exacerbated airway inflammation, goblet cell
metaplasia, and airway remodeling, but all of these features in this viral
exacerbation model were ameliorated by anti-Axl mAb treatment. Taken together,
these results demonstrate that Axl modulates the pulmonary immune response during
viral and/or allergic pathology, and they also suggest that targeting this TAM
receptor might provide a novel therapeutic approach in these infectious diseases.