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    • 20. 发明申请
    • AFFINITY LABELING LIBRARIES WITH TAGGED LEAVING GROUPS
    • 具有标签的组织的标志性标签图书馆
    • WO1998011437A1
    • 1998-03-19
    • PCT/US1997016435
    • 1997-09-16
    • REDCELL CANADA, INC.KRANTZ, Alexander
    • REDCELL CANADA, INC.HANEL, Arthur, M.HUANG, Wolin
    • G01N33/53
    • C40B30/04B01J2219/00592G01N33/6845
    • Methods and compositions are provided for identifying compounds having affinity to a target site. The method provides for the affinity group to be a leaving group from a reactive functionality capable of forming a covalent bond to the target site. One can combine the compound comprising the target site with the library, and assay for the resulting composition of the leaving groups. The leaving groups having the highest concentration can be identified as the groups having the binding highest affinity for the target site. The selected compounds may then be used for labeling the target molecule, particularly where the target molecule is naturally found in a complex mixture, such as a physiological fluid, like blood. By affinity labeling in vivo, the lifetime of physiologically active entities can be greatly enhanced by becoming bound to long lived blood components. The covalently bound entity may also serve as an antagonist or agonist of a particular binding protein or as an enzyme inhibitor.
    • 提供方法和组合物用于鉴定对靶位点具有亲和性的化合物。 该方法提供了亲和基团为能够与靶位点形成共价键的反应性官能团的离去基团。 可以将包含靶位点的化合物与文库结合,并测定所得离去基团的组成。 具有最高浓度的离去基团可以被鉴定为对靶位点具有最高亲和力的结合基团。 然后可以将所选择的化合物用于标记靶分子,特别是当目标分子天然存在于复杂混合物如生理液体如血液中时。 通过体内的亲和标记,通过与长寿命血液成分结合,可以大大提高生理活性物质的寿命。 共价结合的实体也可以用作特异性结合蛋白的拮抗剂或激动剂或作为酶抑制剂。