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2020 ; 22
(5
): e13150
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gab.com Text
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Human microRNA-30 inhibits influenza virus infection by suppressing the
expression of SOCS1, SOCS3, and NEDD4
#MMPMID31876380
Lin X
; Yu S
; Ren P
; Sun X
; Jin M
Cell Microbiol
2020[May]; 22
(5
): e13150
PMID31876380
show ga
Influenza A virus (IAV) has evolved multiple mechanisms to compromise type I
interferon (IFN) responses. The antiviral function of IFN is mainly exerted by
activating the JAK/STAT signalling and subsequently inducing IFN-stimulated gene
(ISG) production. However, the mechanism by which IAV combat the type I IFN
signalling pathway is not fully elucidated. In this study, we explored the roles
of human microRNAs modulated by IAV infection in type I IFN responses. We
demonstrated that microRNA-30 (miR-30) family members were downregulated by IAV
infection. Our data showed that the forced expression of miR-30 family members
inhibited IAV proliferation, while miR-30 family member inhibitors promoted IAV
proliferation. Mechanistically, we found that miR-30 family members targeted and
reduced SOCS1 and SOCS3 expression, and thus relieved their inhibiting effects on
IFN/JAK/STAT signalling pathway. In addition, miR-30 family members inhibited the
expression of NEDD4, a negative regulator of IFITM3, which is important for host
defence against influenza viruses. Our findings suggest that IAV utilises a novel
strategy to restrain host type I IFN-mediated antiviral immune responses by
decreasing the expression of miR-30 family members, and add a new way to
understand the mechanism of immune escape caused by influenza viruses.
|A549 Cells
[MESH]
|Down-Regulation
[MESH]
|HeLa Cells
[MESH]
|Host-Pathogen Interactions/immunology
[MESH]
|Humans
[MESH]
|Influenza A virus/*drug effects/genetics
[MESH]
|Influenza, Human/*drug therapy
[MESH]
|MicroRNAs/genetics/*pharmacology
[MESH]
|Nuclear Proteins/genetics/*metabolism
[MESH]
|RNA-Binding Proteins/genetics/*metabolism
[MESH]
|Suppressor of Cytokine Signaling 1 Protein/genetics/*metabolism
[MESH]