Synthesis and Biological Evaluation (in Vitro and in Vivo) of Cyclic Arginine–Glycine–Aspartate (RGD) Peptidomimetic–Paclitaxel Conjugates Targeting Integrin α<sub>V</sub>β<sub>3</sub>
作者:Raffaele Colombo、Michele Mingozzi、Laura Belvisi、Daniela Arosio、Umberto Piarulli、Nives Carenini、Paola Perego、Nadia Zaffaroni、Michelandrea De Cesare、Vittoria Castiglioni、Eugenio Scanziani、Cesare Gennari
DOI:10.1021/jm301058f
日期:2012.12.13
A small library of integrin ligand–paclitaxel conjugates 10–13 was synthesized with the aim of using the tumor-homing cyclo[DKP-RGD] peptidomimetics for site-directed delivery of the cytotoxic drug. All the paclitaxel–RGD constructs 10–13 inhibited biotinylated vitronectin binding to the purified αVβ3 integrin receptor at low nanomolar concentration and showed in vitro cytotoxic activity against a
整联配体-紫杉醇结合体的一小库10 - 13用使用肿瘤归巢的目的合成环[DKP-RGD]对于细胞毒性药物的位点定向递送拟肽。所有的紫杉醇-RGD构造10 - 13受抑制生物素化的玻连蛋白结合到纯化的α V β 3整联在低纳摩尔浓度受体和体外细胞毒活性表现出抗类似于紫杉醇的人肿瘤细胞系组成的小组。在这些细胞系中,顺铂耐药的IGROV-1 / PT1细胞表达高水平的整合素α V β 3,使它们具有吸引力,可以在体内模型中进行测试。环[DKP - f 3-RGD] -PTX 11在生理溶液以及人和鼠血浆中均显示出足够的稳定性,是体内测试的良好候选者。在针对裸鼠异种移植的IGROV-1 / Pt1人卵巢癌的靶向肿瘤实验中,尽管使用的紫杉醇摩尔剂量较低(约一半),但与紫杉醇相比,化合物11的活性更高。