A New Class of 5-Fluoro-2?-deoxyuridine Prodrugs Conjugated with a Tumor-Homing Cyclic Peptide CNGRC by Ester Linkers: Synthesis, Reactivity, and Tumor-Cell?Selective Cytotoxicity
作者:Zhouen Zhang、Hiroshi Hatta、Kazuhito Tanabe、Sei-ichi Nishimot o
DOI:10.1007/s11095-004-1875-x
日期:2005.3
phosphate buffer (PB), fetal bovine serum (FBS), HT-1080 cell lysate, MDA-MB-231 cell lysate, and MEM containing 10% FBS. The tumor-cell-selective cytotoxicity of prodrugs was evaluated by an MTT method. RESULTS Two tumor-targeting prodrugs CNF1 and CNF2 bearing 5-FdUrd conjugated with a common cyclic peptide CNGRC by succinate and glutarate linkers, respectively, and their control compounds CN1 and
目的合成5-氟-2'-脱氧尿苷(5-FdUrd)的靶向肿瘤的前药,该药物是5-FdUrd与肿瘤归巢环肽CNGRC通过琥珀酸酯和戊二酸酯连接物的化学缀合,以研究其结构效应。接头对5-FdUrd的水解释放和肿瘤细胞选择性细胞毒性的影响。方法采用固相合成法制备5-FdUrd前药。在磷酸盐缓冲液(PB),胎牛血清(FBS),HT-1080细胞裂解液,MDA-MB-231细胞裂解液和含10%FBS的MEM中研究了前药水解5-FdUrd释放的动力学和效率。通过MTT方法评估前药的肿瘤细胞选择性细胞毒性。结果合成并鉴定了两种带有5-FdUrd的靶向肿瘤的前药CNF1和CNF2,它们分别通过琥珀酸酯和戊二酸酯接头与共同的环状肽CNGRC缀合,并确定了其不含5-FdUrd部分的对照化合物CN1和CN2。与CNF2相比,CNF1进行水解可更快,更有效地释放5-FdUrd。与5-FdUrd相比,这两种前药的细胞毒性都较低,显示出对APN