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, 11 (6), 365-9

Production of Human Interferon-Beta by Sendai Virus and poly(rI).poly(rC): Inhibition by Neomycin

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Production of Human Interferon-Beta by Sendai Virus and poly(rI).poly(rC): Inhibition by Neomycin

H Y Lin et al. J Interferon Res.

Abstract

Neomycin inhibits the production of interferon-beta (IFN-beta) in human fibroblast cells in response to Sendai virus or to poly(rI).poly(rC) in a concentration-dependent manner, and to the greatest extent effective when added prior to or up to 2 h after induction. This inhibitory effect is negated when the protein kinase C activator, SC-9, is present during IFN-beta production in response to poly(rI).poly(rC), but not in response to Sendai virus. These results suggest that in human cells both virus and poly(rI).poly(rC) utilize an early neomycin-sensitive signal transduction step for the production of IFN-beta; because neomycin binds specific phosphatidylinositol phosphates, both of these inducers very likely require hydrolysis of these phosphates.

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