loading content (LC%). Physicochemical characteristics, in vitro release behavior, cellular toxicity and cellular uptake, in vivo biodistribution as well as in vivo antitumor activities of GPSLP/DOX were investigated. GPSLP/DOX showed significantly pH-sensitive features in the in vitro release assay. All the blank liposomes were nontoxic in the in vitro cytotoxicity assay. In the MTT assay, GPSLP/DOX showed
在过去的几十年中,已经成功开发出通过改善治疗效果来治疗癌症的pH敏感药物递送系统。在这项研究中,成功合成了一种新型的pH敏感的共轭
甘草次酸-聚
乙二醇-Schiff键-
胆固醇(GPSC),并用于构建具有pH敏感特征并具有pH敏感性的
阿霉素(DOX)负载脂质体(GPSLP / DOX)。主动瞄准能力。使用薄膜
水化方法将DOX掺入脂质体中,其包封效率(EE%)和载药量(LC%)相对较高。理化特性,体外释放行为,细胞毒性和细胞吸收,体内
生物分布以及体内研究了GPSLP / DOX的抗肿瘤活性。GPSLP / DOX在体外释放试验中显示出明显的pH敏感特征。在体外细胞毒性测定中,所有空白脂质体均无毒。在M
TT分析中,GPSLP / DOX在所有组中显示出最高的细胞毒性。细胞吸收研究表明,GPSLP / DOX可以通过受体介导的内吞作用和pH响应药物将DOX释放到细胞质中而被有效吸收,从而产生更高