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  • Title: Multiple molecular forms of interferon display different specific activities in the induction of the antiviral state and 2'5' oligoadenylate synthetase.
    Author: Chelbi-Alix MK, Thang MN.
    Journal: Biochem Biophys Res Commun; 1986 Dec 30; 141(3):1042-50. PubMed ID: 3028383.
    Abstract:
    Both Hu IFN-alpha A and Hu IFN-alpha D, produced by two independent recombinant bacterial clones, are mixtures of monomers, dimers and trimers. These forms, when assayed individually in heterologous MDBK cells, induced different degree of antiviral and 2'5' oligoadenylate synthetase (2'5' A synthetase) activities: the antiviral activity of the monomer is greater than that of the dimer and the trimer, whereas the activity of 2'5' A synthetase induction is lower with the monomer than with the dimer or the trimer. Similar differences are also observed on human cells. Compared to the mononeric form, the dimeric and the trimeric forms of Hu IFN-alpha A show higher antiviral inducing activity on heterologous MDBK cells than on homologous WISH cells, whereas the 2'5' A synthetase inducing activity in these two cell lines is about the same. Thus for the same antiviral activity, the trimer or the dimer compared to the monomer are much better inducers of the 2'5' A synthetase on human than on MDBK cells.
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