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- W1896009660 abstract "Abstract We have investigated the effect of human recombinant interferon-alpha (IFN-alpha) on mitogen-induced immunoglobulin (Ig) production by peripheral blood mononuclear cells from normal individuals. Low concentrations (1 to 100 IU/ml) of IFN-alpha enhanced pokeweed mitogen-stimulated Ig production. In contrast, high concentrations of IFN-alpha (10(5) IU/ml) suppressed pokeweed mitogen-induced Ig production. Irradiation of T cells did not ablate the high dose suppression, indicating that suppression was not due to a radiation-sensitive T cell. Kinetic experiments revealed that IFN-alpha needed to be added to 10 day cultures within the first 72 hr for either enhancement or suppression to be noted. Preincubation of purified B cells with IFN-alpha suppressed Ig production as completely as when unfractionated mononuclear cells were incubated with IFN-alpha. On the other hand, preincubation of T cells or monocytes with IFN-alpha had no effect on subsequent Ig production in reconstituted mononuclear cell cultures. Mitogen-induced proliferation of purified B cells was not affected by IFN-alpha at any concentration, but Ig production by purified B cells stimulated with Staphylococcus aureus Cowan I or anti-mu and B cell differentiation factors responded to IFN-alpha with low concentration enhancement and high concentration suppression. Studies of Ebstein-Barr virus-transformed B cell lines showed that IFN-alpha caused a similar effect on the CESS line as on peripheral blood B cells, with low dose enhancement and high dose suppression of Ig production. Thus one IFN-alpha effect is to modulate Ig production, and this appears to be a direct effect on B cells. Combined with the data in the accompanying paper, the effects of IFN-alpha on B cell function are similar in vivo and in vitro." @default.
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- W1896009660 date "1986-11-15" @default.
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- W1896009660 title "Effect of interferon-alpha on immunoglobulin synthesis by human B cells." @default.
- W1896009660 doi "https://doi.org/10.4049/jimmunol.137.10.3153" @default.
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