PSMA-Oriented Target Delivery of Novel Anticancer Prodrugs: Design, Synthesis, and Biological Evaluations of Oligopeptide-Camptothecin Conjugates
作者:Bing Xu、Fei Zhou、Meng-Meng Yan、De-Sheng Cai、Wen-Bo Guo、Yu-Qin Yang、Xiao-Hui Jia、Wen-Xi Zhang、Tong Li、Tao Ma、Peng-Long Wang、Hai-Min Lei
DOI:10.3390/ijms19103251
日期:——
water solubility. Targeted drug delivery systems may offer the possibility to overcome the above issues as reported. In this research, a series of prostate-specific membrane antigen (PSMA)-activated CPT prodrugs were designed and synthesized by coupling water-soluble pentapeptide, a PSMA hydrolyzing substrate, to CPT through an appropriate linker. The cytotoxicity of CPT prodrugs was masked temporarily
喜树碱(CPT)的非靶向毒性,活性内酯环不稳定性和水溶性差,已严重阻碍了其临床应用。靶向药物递送系统可能提供克服上述报道的问题的可能性。在这项研究中,通过将水溶性五肽(一种PSMA水解底物)通过适当的接头与CPT偶联,设计并合成了一系列前列腺特异性膜抗原(PSMA)活化的CPT前药。CPT前药的细胞毒性被暂时掩盖,直到它们被存在于肿瘤部位的PSMA水解,从而恢复了细胞毒性。评估了前药对表达PSMA的人前列腺癌细胞LNCaP-FGC和非表达PSMA的癌细胞HepG2,Hela,MCF-7,DU145的体外选择性细胞毒活性。PC-3和正常细胞MDCK,LO2通过标准甲基噻唑四唑(MTT)测定。大多数新合成的CPT前药对水溶性PSMA产生的前列腺癌细胞LNCaP-FGC表现出优异的选择性毒性。在文库中,CPT-HT-J-ZL12在表达PSMA的癌细胞和未表达PSMA的癌细胞之间显示出最佳的细胞毒