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Unterstab, G.* ; Ludwig, S.* ; Anton, A.* ; Planz, O.* ; Dauber, B.* ; Krappmann, D.* ; Heins, G.* ; Ehrhardt, C.* ; Wolff, T.*

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

Proc. Natl. Acad. Sci. U.S.A. 102, 13640-13645 (2005)
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Open Access Gold möglich sobald Verlagsversion bei der ZB eingereicht worden ist.
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. Furthermore, our data show that the BDV P protein itself is phosphorylated by TBK-1, suggesting that P functions as a viral decoy substrate that prevents activation of cellular target proteins of TBK-1. Thus, our findings provide evidence for a previously undescribed mechanism by which a viral protein interferes with the induction of the antiviral IFN cascade.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 2005
HGF-Berichtsjahr 0
ISSN (print) / ISBN 0027-8424
e-ISSN 1091-6490
Quellenangaben Band: 102, Heft: 38, Seiten: 13640-13645 Artikelnummer: , Supplement: ,
Verlag National Academy of Sciences
Begutachtungsstatus Peer reviewed
PubMed ID 16155125
Erfassungsdatum 2005-12-31