作者:Petra Dvořáková、Petr Bušek、Tomáš Knedlík、Jiří Schimer、Tomáš Etrych、Libor Kostka、Lucie Stollinová Šromová、Vladimír Šubr、Pavel Šácha、Aleksi Šedo、Jan Konvalinka
DOI:10.1021/acs.jmedchem.7b00767
日期:2017.10.26
most normal adult tissues, suggesting its promise as a target for the diagnosis or treatment of various cancers. Here, we report preparation of a polymer conjugate (an iBody) containing a FAP-specific inhibitor as the targeting ligand. The iBody inhibits both human and mouse FAP with low nanomolar inhibition constants but does not inhibit close FAP homologues dipeptidyl peptidase IV, dipeptidyl peptidase
蛋白酶直接参与癌症发病机理。在超过90%的上皮癌中,间质成纤维细胞中成纤维细胞活化蛋白(FAP)的表达上调,并且与肿瘤进展相关。在大多数正常成人组织中,FAP表达极少或不存在,表明其有望作为诊断或治疗各种癌症的靶标。在这里,我们报告制备包含FAP特异性抑制剂作为靶向配体的聚合物共轭物(iBody)。iBody以低纳摩尔抑制常数抑制人和小鼠FAP,但不抑制紧密的FAP同源物二肽基肽酶IV,二肽基肽酶9和脯氨酰寡肽酶。我们证明了该iBody可用于从细胞裂解液和血清中分离FAP以及通过ELISA,Western blot,流式细胞仪和共聚焦显微镜。我们的结果表明,iBody是体外FAP靶向的有用工具,也可能是特异性抗癌药物递送的有用工具。