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    • 47. 发明申请
    • MULTIVALENT ANTIGEN-BINDING PROTEINS
    • 多功能抗体结合蛋白
    • WO1991019739A1
    • 1991-12-26
    • PCT/GB1991000935
    • 1991-06-11
    • CELLTECH LIMITEDKING, David, JohnMOUNTAIN, AndrewOWENS, Raymond, JohnYARRANTON, Geoffrey, Thomas
    • CELLTECH LIMITED
    • C07K13/00
    • C07K16/18A01K2217/075A61K38/00A61K2039/505C07K16/00C07K16/468C07K2317/55C07K2317/622C07K2319/00
    • A multivalent antigen-binding protein comprises a first Fv fragment bound to at least one further Fv fragment by a connecting structure which links the Fv fragments to each other but which maintains them spaced apart such that the protein is capable of binding to adjacent antigenic determinants. Typically the connecting structure comprises a spacing polypeptide sequence, which may be about 3 to 16 amino acids in length, connected to a linkage unit which may be a synthetic chemical linker, e.g. a maleimide linker, or is a polypeptide sequence leading from the spacing sequence. In a particularly preferred embodiment the multivalent antigen binding protein comprises a VH domain having attached to its C-terminal end a V-C joining sequence and an antibody hinge sequence. Preferably one or more of the Fv fragments is a single chain Fv (scFv). The proteins are preferably prepared by recombinant DNA techniques and are useful for in vivo therapeutic and especially diagnostic applications.
    • 多价抗原结合蛋白包含通过连接结构与至少一个另外的Fv片段结合的第一Fv片段,其将Fv片段彼此连接,但是保持它们间隔开,使得蛋白质能够结合相邻的抗原决定簇。 通常,连接结构包含间隔多肽序列,其可以是长度为约3至16个氨基酸,连接到可以是合成化学接头的连接单元,例如, 马来酰亚胺接头,或是从间隔序列引出的多肽序列。 在一个特别优选的实施方案中,多价抗原结合蛋白包含与其C末端连接V-C连接序列和抗体铰链序列的VH结构域。 优选地,一个或多个Fv片段是单链Fv(scFv)。 蛋白质优选通过重组DNA技术制备并且可用于体内治疗和特别是诊断应用。