申请人:Li C. King
公开号:US20080085238A1
公开(公告)日:2008-04-10
A tissue is imaged to detect the presence of amyloid deposits or other target proteins prior to their aggregation into plaques, with the assistance of the administration of a labeled bifunctional compound of which one functionality binds to the target protein and the second functionality binds to a chaperone protein that is present in the tissue of interest. The two functionalities have different binding affinities, the target-binding functionality having the greater binding affinity, with the result that the bifunctional compound preferentially remains in the tissue when bound to the chaperone and then the target protein while bifunctional compound that is not bound to the target protein will leave the tissue. The inclusion of the chaperone allows the imaging process to detect the non-aggregated proteins by way of the label and the difference in kinetics of the binding to the chaperone and the target protein permits one to distinguish between binding of the bifunctional molecule to the chaperone only and binding to the chaperone and then to the target protein. Certain intermediates toward the synthesis of these bifunctional compounds are novel by themselves, and labeled bifunctional molecules in general that utilize a lysine linker are also disclosed as a novel class of compounds.
一种组织被成像以检测淀粉样沉积物或其他靶蛋白质在聚集成斑块之前的存在,辅助使用一种带标记的双功能化合物的管理,其中一个功能性结合到靶蛋白质,第二个功能性结合到存在于感兴趣组织中的分子伴侣蛋白。这两种功能性具有不同的结合亲和力,结合到靶蛋白质的功能性具有更强的结合亲和力,结果是双功能化合物在与分子伴侣和靶蛋白质结合时更倾向于留在组织中,而未与靶蛋白质结合的双功能化合物会离开组织。包括分子伴侣可以使成像过程通过标记和结合到分子伴侣和靶蛋白质的结合动力学差异来检测非聚集的蛋白质,从而使人们能够区分双功能分子仅与分子伴侣结合和先与分子伴侣结合然后与靶蛋白质结合之间的区别。这些双功能化合物的合成中间体本身是新颖的,同时也公开了一种利用赖氨酸连接物的带标记双功能分子作为一种新颖类化合物。