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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 Virol+J
2017 ; 14
(1
): 213
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English Wikipedia
Investigation of antiviral state mediated by interferon-inducible transmembrane
protein 1 induced by H9N2 virus and inactivated viral particle in human
endothelial cells
#MMPMID29100522
Feng B
; Zhao L
; Wang W
; Wang J
; Wang H
; Duan H
; Zhang J
; Qiao J
Virol J
2017[Nov]; 14
(1
): 213
PMID29100522
show ga
BACKGROUND: Endothelial cells are believed to play an important role in response
to virus infection. Our previous microarray analysis showed that H9N2 virus
infection and inactivated viral particle inoculation increased the expression of
interferon-inducible transmembrane protein 1 (IFITM1) in human umbilical vein
endothelial cells (HUVECs). In present study, we deeply investigated the
expression patterns of IFITM1 and IFITM1-mediated antiviral response induced by
H9N2 virus infection and inactivated viral particle inoculation in HUVECs.
Epithelial cells that are considered target cells of the influenza virus were
selected as a reference control. METHODS: First, we quantified the expression
levels of IFITM1 in HUVECs induced by H9N2 virus infection or viral particle
inoculation using quantitative real-time PCR and western blot. Second, we
observed whether hemagglutinin or neuraminidase affected IFITM1 expression in
HUVECs. Finally, we investigated the effect of induced-IFITM1 on the antiviral
state in HUVECs by siRNA and activation plasmid transfection. RESULTS: Both H9N2
virus infection and viral particle inoculation increased the expression of IFITM1
without elevating the levels of interferon-?/? in HUVECs. HA or NA protein
binding alone is not sufficient to increase the levels of IFITM1 and
interferon-?/? in HUVECs. IFITM1 induced by viral particle inoculation
significantly decreased the virus titers in culture supernatants of HUVECs.
CONCLUSIONS: Our results showed that inactivated viral particle inoculation
increased the expression of IFITM1 at mRNA and protein levels. Moreover, the
induction of IFITM1 expression mediated the antiviral state in HUVECs.