were purchased from Sigma. PAA was used at 100 μM to inhibit KSHV
replication. Recombinant human IFNβ was from Peprotech (300–02BC).
The following antibodies were used in our study: anti-FLAG (F1804, Sigma),
anti-tubulin (GTU-88, Sigma), anti-LANA (13–210-100, Advanced
Biotechnologies), anti-ORF45 (sc-53883, Santa Cruz), anti-K8 (sc-57889, Santa
Cruz), anti-K8.1 (sc-65446, Santa Cruz), anti-ORF26 (NBP1–47357, Novus
Biologicals), anti-vIRF3 (NB200–167, Novus Biologicals), anti-CBP
(sc-369, Santa Cruz), anti-IRF3 (sc-33641, Santa Cruz), and anti-pIRF3 (S396)
(4947S, Cell Signaling). Anti-RTA and anti-ORF6 antibodies were generously
provided by Dr. Yoshihiro Izumiya (University of California, Davis) and Dr. Gary
Hayward (Johns Hopkins University), respectively.