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    Cytokine Growth Factor Rev. 2007 Oct-Dec;18(5-6):381-8. Epub 2007 Jul 27.

    A scientific journey through the 2-5A/RNase L system.

    Silverman RH.

    Source

    Department of Cancer Biology, NB40 Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA. silverr@ccf.org

    Abstract

    The antiviral and antitumor actions of interferons are caused, in part, by a remarkable regulated RNA cleavage pathway known as the 2-5A/RNase L system. 2'-5' linked oligoadenylates (2-5A) are produced from ATP by interferon-inducible synthetases. 2-5A activates pre-existing RNase L, resulting in the cleavage of RNAs within single-stranded regions. Activation of RNase L by 2-5A leads to an antiviral response, although precisely how this happens is a subject of ongoing investigations. Recently, RNase L was identified as the hereditary prostate cancer 1 gene. That finding has led to the discovery of a novel human retrovirus, XMRV. My scientific journey through the 2-5A system recounts some of the highlights of these efforts. Knowledge gained from studies on the 2-5A system could have an impact on development of therapies for important viral pathogens and cancer.

    PMID:
    17681844
    [PubMed - indexed for MEDLINE]
    PMCID: PMC2075094
    Free PMC Article

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