Screening of Modified RNA duplexes

Brian Dall Schyth, Jesper Bertram Bramsen, Jørgen Kjems, Jesper Wengel, Niels Lorenzen

    Research output: Contribution to conferencePosterResearchpeer-review


    Because of sequence specific gene targeting activity siRNAs are regarded as promising active compounds in gene medicine. But one serious problem with delivering siRNAs as treatment is the now well-established non-specific activities of some RNA duplexes. Cellular reactions towards double stranded RNAs include the 2´-5´ oligoadenylate synthetase system, the protein kinase R, RIG-I and Toll-like receptor activated pathways all resulting in antiviral defence mechanism. We have previously shown that antiviral innate immune reactions against double stranded RNAs could be detected in vivo as partial protection against a fish pathogenic virus. This protection corresponded with an interferon response in the fish. Here we use this fish model to screen siRNAs containing various chemical modifications of the RNA backbone for their antiviral activity, the overall aim being identification of an siRNA form with minimal immunostimulatory effects.
    Original languageEnglish
    Publication date2009
    Publication statusPublished - 2009
    EventRNA interference Summit - San Francisco
    Duration: 1 Jan 2009 → …


    ConferenceRNA interference Summit
    CitySan Francisco
    Period01/01/2009 → …


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