Production of interferon-alpha induced by dsRNA in human peripheral blood mononuclear cell cultures: role of priming by dsRNA-induced interferons-gamma and -beta

Journal of Interferon Research
J L Lepe-ZunigaJ U Gutterman

Abstract

Poly(I):poly(C) (rIn.rCn), mismatched poly(I):poly(C) [rIn.r(C12U)n], and poly(I):poly(C) poly-lysine carboxymethylcellulose [poly(ICLC)] were studied for their capacity to induce interferon-alpha (IFN-alpha) in human peripheral blood mononuclear cell (MNC) cultures and in their subpopulations. In MNC, poly(I):poly(C) and mismatched poly(I):poly(C) induced IFN-alpha in a dose-dependent manner, whereas poly(ICLC) was unable to do so in concentrations that ranged from 1 to 160 micrograms/ml. In contrast, all three molecules were incapable of inducing IFN-alpha when added into either purified monocyte or lymphocyte cultures. The capacity of poly(I):poly(C) to induce IFN-alpha was reestablished only in monocyte cultures when, prior to the stimulation, the cells were exposed for at least 2 h to supernatants from poly(I):poly(C)-stimulated lymphocyte cultures. IFN-beta and IFN-gamma were found in those supernatants and the ability of each dsRNA to induce IFN-alpha correlated with its ability to induce IFN-gamma. Further studies using recombinant human IFN-gamma and IFN-beta and their specific antibodies corroborated an important role of these molecules for the induction of IFN-alpha with dsRNA. Because each IFN type is produced by di...Continue Reading

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May 1, 1991·Journal of Cellular Biochemistry·D S HainesD H Gillespie
Mar 16, 2006·Journal of Virology·Carolina B LópezThomas M Moran
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Aug 22, 2021·Immunology Letters·Muzaffer YildirimIhsan Gursel

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