应用化学 ›› 2019, Vol. 36 ›› Issue (2): 161-169.DOI: 10.11944/j.issn.1000-0518.2019.02.180204

• 研究论文 • 上一篇    下一篇

线性麦芽糊精聚合物功能化Fe3O4纳米复合物药物载体的合成和应用

弓韬ab,黄昱b,郭国英a,苏丹a,梁文婷b*(),董川b*()   

  1. a山西医科大学基础医学院 太原 030001
    b山西大学化学化工学院 太原 030006
  • 收稿日期:2018-06-04 出版日期:2019-02-01 发布日期:2019-01-31
  • 通讯作者: 梁文婷,董川
  • 基金资助:
    国家自然科学基金(21402110,21575084);

Linear Maltodextrin Polymer Functionalized Fe3O4 Magnetic Nanoparticles as Drug Carriers

GONG Taoab,HUANG Yub,GUO Guoyinga,SU Dana,LIANG Wentingb*(),DONG Chuanb*()   

  1. aDepartment of Biochemistry and Molecular Biology,Shanxi Medical University,Taiyuan 030001,China
    bSchool of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China
  • Received:2018-06-04 Published:2019-02-01 Online:2019-01-31
  • Contact: LIANG Wenting,DONG Chuan
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21402110, No.21575084),

摘要:

采用共沉淀法制备得到了线性麦芽糊精聚合物功能化的Fe3O4磁性纳米粒子(LM-SP-MNPs),通过傅里叶变换红外光谱、透射电子显微镜、热重分析等技术对其结构、形貌进行了表征。 其粒径大小为(12±2) nm。 选取抗癌药物盐酸阿霉素(DOX)作为模型药物,运用荧光光谱法研究了LM-SP-MNPs的载药性能和释放行为,探讨了pH值对LM-SP-MNPs药物释放性能的影响。 最适pH条件下,LM-SP-MNPs对盐酸阿霉素的最大吸附量约为357.1 mg/g,吸附等温线符合Freundlich等温吸附模型。 LM-SP-MNPs与盐酸阿霉素的复合物(DOX@LM-SP-MNPs),在37 ℃的条件下药物在酸性条件下的释放效率大于中性条件。 pH=5.3时,盐酸阿霉素在7 h内的累积释放率为26.9%。 此外,细胞毒性试验表明,LM-SP-MNPs具有良好的生物相容性,而DOX@LM-SP-MNPs和肝癌细胞共培养后可以明显杀死HepG2肝癌细胞。

关键词: 线性麦芽糊精聚合物, Fe3O4磁性纳米粒子, 盐酸阿霉素, 载药

Abstract:

Linear maltodextrin polymer modified magnetic nanoparticles(LM-SP-MNPs) were prepared by chemical co-precipitation. The structure and morphology of LM-SP-MNPs were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and thermogravimetric analysis. The loading and release behaviors of LM-SP-MNPs as drug carrier were evaluated by fluorescence spectroscopy using doxorubicin(DOX) as a model drug. The pH effects on LM-SP-MNPs for drug releasing were investigated. Under the optimal pH conditions, the maximum loading of DOX into LM-SP-MNPs is 357.1 mg/g, and the loading behavior follows Freundlich adsorption balance equations with multilayer adsorption. Furthermore, the release ability of DOX@LM-SP-MNPs is more efficient under acid solution than that under natural solution at 37 ℃ in vitro. Accumulated release efficiency of DOX in 7 h is 26.9% at pH=5.3. In addition, the MTT assays show that LM-SP-MNPs have an excellent biocompatibility, and the DOX@LM-SP-MNPs decrease the relative cellular viability of HepG2 cells evidently.

Key words: Linear maltodextrin polymer, Fe3O4 magnetic nanoparticle, doxorubicin, drug carrier