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2016 ; 35
(13
): 1385-99
Nephropedia Template TP
gab.com Text
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English Wikipedia
HSV-1 ICP27 targets the TBK1-activated STING signalsome to inhibit virus-induced
type I IFN expression
#MMPMID27234299
Christensen MH
; Jensen SB
; Miettinen JJ
; Luecke S
; Prabakaran T
; Reinert LS
; Mettenleiter T
; Chen ZJ
; Knipe DM
; Sandri-Goldin RM
; Enquist LW
; Hartmann R
; Mogensen TH
; Rice SA
; Nyman TA
; Matikainen S
; Paludan SR
EMBO J
2016[Jul]; 35
(13
): 1385-99
PMID27234299
show ga
Herpes simplex virus (HSV) 1 stimulates type I IFN expression through the
cGAS-STING-TBK1 signaling axis. Macrophages have recently been proposed to be an
essential source of IFN during viral infection. However, it is not known how
HSV-1 inhibits IFN expression in this cell type. Here, we show that HSV-1
inhibits type I IFN induction through the cGAS-STING-TBK1 pathway in human
macrophages, in a manner dependent on the conserved herpesvirus protein ICP27.
This viral protein was expressed de novo in macrophages with early nuclear
localization followed by later translocation to the cytoplasm where ICP27
prevented activation of IRF3. ICP27 interacted with TBK1 and STING in a manner
that was dependent on TBK1 activity and the RGG motif in ICP27. Thus, HSV-1
inhibits expression of type I IFN in human macrophages through ICP27-dependent
targeting of the TBK1-activated STING signalsome.
|*Immune Evasion
[MESH]
|Cells, Cultured
[MESH]
|Herpesvirus 1, Human/*pathogenicity
[MESH]
|Host-Pathogen Interactions
[MESH]
|Humans
[MESH]
|Immediate-Early Proteins/*metabolism
[MESH]
|Interferon Type I/*antagonists & inhibitors
[MESH]