高等学校化学学报 ›› 2015, Vol. 36 ›› Issue (11): 2342.doi: 10.7503/cjcu20150683

• 高分子化学 • 上一篇    下一篇

差别性释放两种药物的层层组装聚合物膜

陈栋栋1, 陈杰2, 田华雨2, 陈学思2, 孙俊奇1()   

  1. 1. 吉林大学超分子结构与材料国家重点实验室, 化学学院, 长春 130012
    2. 中国科学院生态环境高分子材料重点实验室, 长春应用化学研究所, 长春 130022
  • 收稿日期:2015-09-01 出版日期:2015-11-10 发布日期:2015-10-26
  • 作者简介:联系人简介: 孙俊奇, 男, 博士, 教授, 博士生导师, 主要从事功能性聚合物膜方面的研究. E-mail:sun_junqi@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21225419, 21221063)资助

Layer-by-layer Assembled Polymeric Films for Differential Release of Dual Drugs

CHEN Dongdong1, CHEN Jie2, TIAN Huayu2, CHEN Xuesi2, SUN Junqi1,*()   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry,Jilin University, Changchun 130012, China
    2. Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry,Chinese Academy of Sciences, Changchun 130022, China
  • Received:2015-09-01 Online:2015-11-10 Published:2015-10-26
  • Contact: SUN Junqi E-mail:sun_junqi@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21225419, 21221063)

摘要:

基于层层组装技术制备了能够差别性释放2种药物的聚合物复合膜. 通过大分子前体药物透明质酸-阿霉素(HA-DOX)与壳聚糖(HACC)的层层组装以及膜内后扩散负载甲氨喋呤二钠盐(MTX)的方法, 实现了DOX和MTX 2种药物分子在聚合物膜中的负载. DOX和MTX在癌变组织的酸性环境下具有差别性的释放动力学, MTX在24 h内快速释放, 而DOX长效缓释达10 d. 细胞实验结果表明, 差别性释放的DOX和MTX可有效地抑制癌细胞的增殖.

关键词: 层层组装, 聚合物膜, 药物传递, 差别性释放

Abstract:

Layer-by-layer(LbL)-assembled polymeric films capable of differentially releasing dual anticancer drugs to achieve synergetic therapeutic effects were fabricated. Doxorubicin(DOX) was first conjugated to hyaluronic sodium(HA) via acid labile hydrazone bonds to produce HA-DOX prodrugs. Then HA-DOX was alternately deposited with 2-hydroxypropyltrimethyl ammonium chloride chitosan(HACC) to produce (HACC/HA-DOX)n(n is the number of deposition cycle) film. Methotrexate(MTX) was then loaded into (HACC/HA-DOX)20 film by a post-diffusion process. MTX was quickly released due to the breakage of its electrostatic interaction with film component HACC. Meanwhile, DOX was released in a sustained manner because of the slow hydrolysis of hydrazine bonds. The synergetic therapeutic effects can be achieved by fast release of cell cycle specific drug MTX to effectively inhibit the proliferation of cancer cells and by sustained release of cell cycle non-specific drug DOX to kill cancer cells. The present study provides a new way for designing polymeric films for controlled release of multiple therapeutic agents.

Key words: Layer-by-layer assembly, Polymeric film, Drug delivery, Differential release

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