PEGylated N-(2 hydroxypropyl) methacrylamide-doxorubicin conjugate as pH-responsive polymeric nanoparticles for cancer therapy
作者:Yamini Bobde、Swati Biswas、Balaram Ghosh
DOI:10.1016/j.reactfunctpolym.2020.104561
日期:2020.6
of solid tumors. In the present study, a novel hydroxypropyl methacrylamide (HPMA)-based polymer, p(HPMA)-p(HPMA-NH-N-DOX)-b-mPEG(P6) has been developed for the delivery of anticancer drug, Doxorubicin (DOX). The monomer, HPMA was conjugated to DOX via pH-responsive hydrazone linker to form HPMA-NH-N-DOX, which was further reacted along with free HPMA in the radical polymerization reaction using mPEG2–4
对于靶向的抗癌药物递送而言,需要生物可降解的和肿瘤微环境响应性聚合物。在这方面,开发pH敏感药物递送系统以将抗癌药物携带到肿瘤是一种有前途的策略。这种类型的递送系统靶向酸性细胞外微环境以及实体瘤的细胞内细胞器。在本研究中,已开发出一种新型的基于羟丙基甲基丙烯酰胺(HPMA)的聚合物p(HPMA)-p(HPMA-NH-N-DOX)-b-mPEG(P6)用于递送抗癌药物阿霉素( DOX)。单体HPMA通过pH响应的link连接子与DOX结合形成HPMA-NH-N-DOX,并与游离HPMA进一步在使用mPEG 2的自由基聚合反应中反应–4,4-偶氮双-(4-氰基戊酸)(mPEG 2 -ABCPA)作为大分子引发剂。通过凝胶渗透色谱(GPC),质子核磁共振(1 HNMR),傅立叶变换红外光谱(FTIR),差示扫描量热法(DSC)和X射线晶体学分析对合成的聚合物进行表征。自组装的聚合物-药物缀合物-