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2017 ; 214
(11
): 3263-3277
Nephropedia Template TP
gab.com Text
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HCFC2 is needed for IRF1- and IRF2-dependent Tlr3 transcription and for survival
during viral infections
#MMPMID28970238
Sun L
; Jiang Z
; Acosta-Rodriguez VA
; Berger M
; Du X
; Choi JH
; Wang J
; Wang KW
; Kilaru GK
; Mohawk JA
; Quan J
; Scott L
; Hildebrand S
; Li X
; Tang M
; Zhan X
; Murray AR
; La Vine D
; Moresco EMY
; Takahashi JS
; Beutler B
J Exp Med
2017[Nov]; 214
(11
): 3263-3277
PMID28970238
show ga
Transcriptional regulation of numerous interferon-regulated genes, including
Toll-like receptor 3 (Tlr3), which encodes an innate immune sensor of viral
double-stranded RNA, depends on the interferon regulatory factor 1 (IRF1) and
IRF2 transcription factors. We detected specific abrogation of macrophage
responses to polyinosinic-polycytidylic acid (poly(I:C)) resulting from three
independent N-ethyl-N-nitrosourea-induced mutations in host cell factor C2
(Hcfc2). Hcfc2 mutations compromised survival during influenza virus and herpes
simplex virus 1 infections. HCFC2 promoted the binding of IRF1 and IRF2 to the
Tlr3 promoter, without which inflammatory cytokine and type I IFN responses to
the double-stranded RNA analogue poly(I:C) are reduced in mouse macrophages.
HCFC2 was also necessary for the transcription of a large subset of other
IRF2-dependent interferon-regulated genes. Deleterious mutations of Hcfc2 may
therefore increase susceptibility to diverse infectious diseases.