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3 protocols using anti ifn β

1

CpG Oligodeoxynucleotide Signaling in IFN-β Response

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Synthetic phosphodiester oligodeoxynucleotides (CpG 2006 and GpC 2006) were synthesized by InvivoGen (Toulouse, France) and used at indicated concentration. IFN-β was used at 100 or 1000 UI/ml (Avonex, Biogen, Nanterre Cedex, France), anti-IL-29, anti-IFNβ (R&D) and anti-IFNAR2 (PBL, New Jersey, NJ, USA). Cells were stimulated overnight and the response was monitored by luciferase assay or enzyme-linked immunosorbent assay. For luciferase assay transient transfection of the reporter plasmid NF-kB, or ELAM luciferase was performed as previously described.41 (link) Enzyme-linked immunosorbent assays were done in accordance to manufacturer's instructions (R&D system).
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2

Antiviral Immune Response Assay

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Poly (dA:dT) was purchased from InvivoGen, c-di-GMP from KeraFast, cytotoxicity detection kit from Roche, HSV-1 (KOS strain) from ATCC and propagated in Vero cells, Sendai virus (Cantell strain) from Charles River and VSV (Indiana strain) from ATCC and propagated in Vero cells. TNF and IL-6 ELISA kits were from BD Biosciences, mouse anti-IFN-β antibody was from Cosmo Bio, anti-IFN-β was from R&D system, anti-phospho-TBK1, TBK1, phospho-IRF3, IRF3, phospho-p65, p65, phospho-JNK, phospho-ERK, phospho-p38 were from Cell Signaling Technology, and anti-β-actin antibody was from Santa Cruz.
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3

Modulation of HCV Replicon Antiviral Activity

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Huh7/HCV-replicon cells were incubated with 10 μg/ml TNF-α
inhibitor (Enbrel, Immunex Corporation, Seattle, WA), 2 μg/ml IFN-γ R1
antibody or isotype control, 0.5 μg/ml IL-18 binding protein (all from R&D
Systems), 10 μg/ml anti-IFN-α (PBL Interferon Source, Piscataway, NJ) and
10 μg/ml anti-IFN-β (R&D Systems) or 0.2 μg/mL of the
vaccinia virus–encoded B18 receptor protein (VV B18R, eBiosciences), which
competes with the IFN-α/β receptor for IFN binding, prior to addition of
PBMC. After 24h, antiviral activity and IFN-γ production were determined as
described above.
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