The present invention relates to the compositions, methods, and applications of a new approach to pattern recognition based targeting by which an exponential amplification of effector response can be specifically obtained at a targeted cells. The purpose of this invention is to enable the selective delivery of large quantities of an array of effector molecules to target cells for diagnostic or therapeutic purposes. The invention is comprised of two components designated as “Compound 1” and “Compound 2”: Compound 1 is comprised of a cell binding agent and a masked female adaptor. Compound 2 is comprised of a male ligand, an effector agent, and two or more masked female receptors. The male ligand is selected to bind with high affinity to the female adaptor. Compound 1 can bind with high affinity to the target cell and the female receptor can then be unmasked by an enzyme enriched at the tumor cell. The male ligand of Compound 2 can then bind to the unmasked female adaptor bound to the target cell. The masked female adaptor on the bound Compound 2 can then be specifically unmasked. One receptor has in effect become two. Two new molecules of Compound 2 can bind to the unmasked adaptors receptors. After unmasking two receptors in effect become four. The process can continue in an explosive exponential like fashion resulting in enormous amplification of the number of effector molecules specifically deposited at the target cell.
本发明涉及一种基于模式识别的靶向新方法的成分、方法和应用,通过这种方法可以在靶细胞上特异性地获得指数放大的效应反应。本发明的目的是将大量效应分子阵列选择性地传递到靶细胞,以达到诊断或治疗的目的。本发明由两种成分组成,分别称为 "化合物 1 "和 "化合物 2":化合物 1 由细胞结合剂和遮蔽的雌性适
配体组成。化合物 2 由一种雄性
配体、一种效应剂和两种或两种以上被遮蔽的雌性受体组成。雄性
配体可与雌性受体高亲和力结合。化合物 1 能以高亲和力与靶细胞结合,然后雌性受体可被肿瘤细胞中富集的酶解除屏蔽。然后,化合物 2 的雄性
配体可与结合到靶细胞上的未被掩蔽的雌性适
配体结合。然后,结合在化合物 2 上的被掩蔽的雌性适
配体就能被特异性地解除掩蔽。一个受体实际上变成了两个。两个新的化合物 2 分子可以与已解除屏蔽的适
配体受体结合。解除屏蔽后,两个受体实际上变成了四个。这一过程会以爆炸性的指数方式持续进行,从而使特异性沉积在靶细胞上的效应分子数量大幅增加。