GSH与pH双响应型载药ZIF
首发时间:2023-04-25
摘要:(1)探究负载抗癌药物DOX的纳米粒HSZ@DOX的双响应性以及靶向性,并对其体外抗肿瘤活性进行研究。将HSZ@DOX于不同pH的缓冲溶液中以及伴有GSH存在的不同pH缓冲溶液进行药物释放实验,探究其pH、GSH双响应特性。选取HepG2肝癌细胞和HEK-293t正常组织细胞验证其细胞毒性及靶向性。HSZ@DOX的体外药物释放量在pH为5.6、GSH存在的条件下,药物释放量为93.93%,远高于中性环境、没有GSH存在时的释放量(17.81%)。在细胞实验中的结果表明:空白载体HSZ有良好的生物相容性。载药纳米粒HSZ@DOX对于肿瘤细胞和正常组织细胞有较高的选择靶向性。
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GSH and pH dual-responsive drug carrier ZIF
Abstract:To explore the biresponsiveness and targeting of nanoparticle HSZ@DOX loaded with anticancer drug DOX, and to study its antitumor activity in vitro. The drug release experiments were carried out in buffer solutions HSZ@DOX different pH and different pH buffer solutions with GSH to explore the dual response characteristics of pH and GSH. HepG2 hepatoma cells and HEK-293t normal histiocytes were selected to verify their cytotoxicity and targeting. The drug release amount in vitro of HSZ@DOX was 93.93% under the condition of pH 5.6 and the presence of GSH, which was much higher than that released in neutral environment and without GSH (17.81%). The results in cell experiments showed that the blank carrier HSZ had good biocompatibility. Drug-loaded nanoparticles HSZ@DOX have high selective targeting for tumor cells and normal tissue cells.
Keywords: Pharmacy Tumor pH; GSH; ZIF-90; Dual response
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