中国科学技术大学学报 ›› 2014, Vol. 44 ›› Issue (11): 893-903.DOI: 10.3969/j.issn.0253-2778.2014.11.003

• 原创论文 • 上一篇    下一篇

新型谷胱甘肽响应三嵌段聚前药两亲分子的 构筑与纳米结构调控

魏亦军   

  1. 1.安徽大学化学化工学院,安徽合肥 230601;2.淮南师范学院化学与化工系,安徽淮南 232038; 3.华南师范大学激光生命科学研究所,激光生命科学教育部重点实验室,生物光子学研究院,广东广州 510631
  • 收稿日期:2014-06-12 修回日期:2014-10-17 出版日期:2014-11-30 发布日期:2014-11-30
  • 通讯作者: 胡祥龙
  • 作者简介:魏亦军,男,1968年生,教授. 研究方向:高分子化学与物理. E-mail:weiyijn@163.com
  • 基金资助:
    安徽省教育厅自然科学研究重点项目(KJ2010A308),国家自然科学基金(51403042)资助.

Fabrication and nanostructural tuning of a novel GSH-responsive triblock polyprodrug amphiphiles

WEI Yijun   

  1. 1.Department of Chemistry, Anhui University, Hefei 230601, China; 2.Department of Chemistry, Huainan Normal University, Huainan 232038, China; 3.Ministry of Education Key Laboratory of Laser Life Science and Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, 510631, China
  • Received:2014-06-12 Revised:2014-10-17 Online:2014-11-30 Published:2014-11-30

摘要: 针对肿瘤组织的还原性微环境,设计了一种基于谷胱甘肽(GSH)还原性响应的三嵌段聚前药两亲分子,聚喜树碱-嵌段-聚乙二醇-嵌段-聚喜树碱(PCPTM-b-PEG-b-PCPTM), 具有很高的载药量(质量分数大于50%).采用大分子自组装的方法,通过调节共溶剂种类,实现了两种不同纳米结构组装体的构筑.利用透射电镜(TEM)和扫描电镜(SEM)进行表征,采用1,4-二氧六环(1,4-dioxane)作为共溶剂组装得到错列堆积片层结构,改变共溶剂为N,N-二甲基甲酰胺(DMF)时,得到了大复合胶束结构.进一步的细胞实验表明,错列堆积片层结构和大复合胶束结构纳米粒子都具有较快的肿瘤细胞内吞速率和较好的抗肿瘤效果.

关键词: 聚前药两亲分子, 自组装, 还原性响应, 纳米结构, 抗肿瘤

Abstract: Based on the feature of tumors reduction-responsive milieu, a novel type of glutathione (GSH)-responsive polyprodrug amphiphiles, PCPTM-b-PEG-b-PCPTM triblock copolymers was fabricated, with CPT loading content higher than 50% (mass fraction). It is found that aqueous self-assembly of PCPTM-b-PEG-b-PCPTM is strongly dependent on common solvent compositions, affording two kinds of distinct nanostructures, staggered lamellae and large compound micelles determined by TEM and SEM analysis with the common solvent to be 1,4-dioxane and DMF, respectively. Further cellular experiments reveal that both staggered lamellae and large compound micelles possess relatively high rates of tumor cellular internalization and effective anticancer performance.

Key words: polyprodrug amphiphile, self-assembly, reduction-response, nanostructure, anticancer