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    • 71. 发明公开
    • CYTOKINE-BINDING DOMAIN
    • 细胞因子结合结构域
    • EP1161453A1
    • 2001-12-12
    • EP00904705.1
    • 2000-02-08
    • MEDVET SCIENCE PTY. LTD.ST. VINCENTS INSTITUTE OF MEDICAL RESEARCH
    • BAGLEY, Christopher, JamesROSSJOHN, JamieMcKINSTRY, William, JohnWOODCOCK, Joanna, MayPARKER, Michael, WilliamLOPEZ, Angel, Francisco
    • C07K14/715C07K16/24A61K39/395
    • The present invention provides a cytokine-binding domain or portion thereof which binds to at least one cytokine and is capable of transducing a cytokine signal through a single cytokine receptor, said domain comprising a portion of the B'-C' loop of domain 4 of a βc chain or analogous structure of a cytokine receptor. In another aspect of the invention there is provided a method of identifying a compound having cytokine agonist or antagonist activity, said method including subjecting a potential cytokine agonist and/or cytokine antagonist compound to a cytokine binding domain or portion thereof wherein said domain binds to at least one cytokine and is capable of transducing a cytokine signal through a single cytokine rectpor, said domain comprising a portion of the B'-C'loop of domain 4 of a βc chain or analogous structure of the cytokine recetoptor; and determining the presence of an agonist or antagonist response of the compound on the activity of a cytokine. In a preferred aspect there is provided a method of identitying a GM-CSF, IL-3 and IL-5 agonist or antagonist, said method including: subjecting a potential agonist or antagonist to a GM-CSF, IL-3 and IL-5 binding domain or portion thereof wherein said domain binds to at least one of the cytokines and is capable of transducing a cytokine signal through a single cytokine receptor, said domain comprising a portion of the B'-C' loop of domain 4 of a βc chain or analogous structure of the cytokine receptor; and determing the presence of an agonist or antagonist response from the compound on the activity of GM-CSF, IL-3 and IL-5.