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  • Title: Synergism of type I and type II interferons in stimulating the activity of the same DNA enhancer.
    Author: Vaiman D, Pietrokovsky S, Cohen B, Benech P, Chebath J.
    Journal: FEBS Lett; 1990 Jun 04; 265(1-2):12-6. PubMed ID: 2114309.
    Abstract:
    Type I and type II interferons (IFNs) can act synergistically to activate the transcription of the 2-5A synthetase gene. We used in vivo functional assays of sequences from the gene promoter region to determine which DNA segment mediates the gene induction by IFN gamma and the synergistic effect. We found that the type I IFN-inducible enhancer (or IRS) of the 2-5A synthetase gene also confers inducibility by type II IFN to a reporter CAT gene, though the time course and dose response of the induction by the two IFNs are quite different. A clear synergism of the two IFN in stimulating the IRS is observed at low doses of the two IFNs.
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