Viral targeting of the interferon-{beta}-inducing Traf family member-associated NF-{kappa}B activator (TANK)-binding kinase-1.

ABSTRACT: Expression of the antiviral cytokines IFN-alpha/beta is among the most potent innate defenses of higher vertebrates to virus infections, which is controlled by the inducible transcription factor IFN regulatory factor (IRF)3. Borna disease virus (BDV) establishes persistent noncytolytic infections in animals and tissue culture cells, indicating that it can circumvent this antiviral reaction by an unexplained activity. In this study, we identify the BDV P protein as microbial gene product that associates with and inhibits the principal regulatory kinase of IRF3, Traf family member-associated NF-kappaB activator (TANK)-binding kinase 1 (TBK-1). We demonstrate that the P protein counteracts TBK-1-dependent IFN-beta expression in cells and, hence, the establishment of an antiviral state. Furthe

SUBMITTER: Unterstab G 

PROVIDER: S-EPMC1224622 | biostudies-literature | 2005 Sep

REPOSITORIES: biostudies-literature