http://jcps.bjmu.edu.cn

中国药学(英文版) ›› 2017, Vol. 26 ›› Issue (7): 521-527.DOI: 10.5246/jcps.2017.07.058

• 【研究论文】 • 上一篇    下一篇

两亲性树枝状分子改造的PEG-PLA纳米粒的制备及其表征

李欣, 庞宁, 李骥, 齐宪荣*   

  1. 北京大学医学部 药学院 药剂学系; 分子药剂学与新释药系统北京市重点实验室, 北京 100191
  • 收稿日期:2017-05-10 修回日期:2017-05-23 出版日期:2017-07-28 发布日期:2017-06-04
  • 通讯作者: Tel.: +86-010-82801584, Fax: +86-010-82801584, E-mail: qixr@bjmu.edu.cn
  • 基金资助:

    National Natural Science Foundation of China (Grant No. 81473156, 81673365, 81273454), Doctoral Foundation of the Ministry of Education (Grant No. 20130001110055), National Key Basic Research Program (Grant No. 2013CB932501).

Characterization of amphiphilic dendrimer modified PEG-PLA nanoparticles prepared by a double emulsion-solvent evaporation method

Xin Li, Ning Pang, Ji Li, Xianrong Qi*   

  1. Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery System; Department of Pharmaceutics, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
  • Received:2017-05-10 Revised:2017-05-23 Online:2017-07-28 Published:2017-06-04
  • Contact: Tel.: +86-010-82801584, Fax: +86-010-82801584, E-mail: qixr@bjmu.edu.cn
  • Supported by:

    National Natural Science Foundation of China (Grant No. 81473156, 81673365, 81273454), Doctoral Foundation of the Ministry of Education (Grant No. 20130001110055), National Key Basic Research Program (Grant No. 2013CB932501).

摘要:

递送药物的纳米载体需要合适的粒度, 高的药物负载效率以及良好的安全性。聚乙二醇-(D,L-丙交酯)(PEG-PLA)共聚物因其良好的生物相容性, 载药能力和长循环时间, 被广泛用于药物递送, 而将脂质等其他材料掺入到PEG-PLA纳米粒体系中可以进一步改善其特性。我们通过双重乳液溶剂蒸发法制备了两亲树枝状聚合物修饰的PEG-PLA合纳米颗粒, 通过比较粒径和药物包封率对制备参数进行评价和优化。使用不同的制备参数, 混合纳米粒的平均尺寸分分布在(102±1) nm(137±5) nm, 掺入两亲树枝状分子后, ζ电位转化为阳性。该纳米粒对紫杉醇的包封率高于多西紫杉。空白混合纳米粒没有显示出细胞毒性, 而多西紫杉醇负载的纳米粒可有效促进抗肿瘤细胞增殖活性。该纳米粒可望成为有效的药物输送系统。

关键词: PEG-PLA纳米粒, 多西紫杉醇, 紫杉醇, 复乳溶剂挥发法, 两亲树枝状聚合物

Abstract:

Drug delivery by nanocarriers requires characterizations of suitable particle size, high drug loading and safety. In this work, we prepared an amphiphilic dendrimer modified PEG-PLA mixed nanoparticles (NPs) by a double emulsion-solvent evaporation (DESE) method. The particle size and drug encapsulation efficacy (EE) were compared to evaluate and optimize the preparation parameters. The mixed NPs had average size ranging from (102±1) nm to (137±5) nm, and the zeta potential turned to positive with incorporation of the amphiphilic dendrimer. The NPs showed different EE of docetaxel (DTX) and paclitaxel (PTX) with higher affinity to more lipophilic PTX. The blank mixed NPs showed little cytotoxicity, and the DTX-loaded NPs could effectively facilitate the antiproliferation activity on PC-3 cells. The NPs could be used as an effective drug delivery system, and its anti-tumor effect is worthy of further study.

Key words: PEG-PLA nanoparticles, Docetaxel, Paclitaxel, Double emulsion-solvent evaporation method, Amphiphilic dendrimer

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