Abstract:
:Myxoma virus, a member of the poxvirus family, causes lethal infection only in rabbits, but the mechanism underlying the strict myxoma virus species barrier is not known. Here we show that myxoma virus infection of primary mouse embryo fibroblasts elicited extracellular signal-regulated kinase (Erk) signaling, which was integrated to interferon regulatory factor 3 activation and type I interferon induction. We further show that Erk inactivation or disruption of interferon signaling mediated by the transcription factor STAT1 broke the cellular blockade to myxoma virus multiplication. Moreover, STAT1 deficiency rendered mice highly susceptible to lethal myxoma virus infection. Thus, the Erk-interferon-STAT1 signaling cascade elicited by myxoma virus in nonpermissive primary mouse embryo fibroblasts mediates an innate cellular barrier to poxvirus infection.
journal_name
Nat Immunoljournal_title
Nature immunologyauthors
Wang F,Ma Y,Barrett JW,Gao X,Loh J,Barton E,Virgin HW,McFadden Gdoi
10.1038/ni1132keywords:
subject
Has Abstractpub_date
2004-12-01 00:00:00pages
1266-74issue
12eissn
1529-2908issn
1529-2916pii
ni1132journal_volume
5pub_type
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