Advanced Materials Research Laboratory, Department of Chemistry, Periyar University, Salem-11, Tamil Nadu, India.
Biomed Pharmacother. 2016 May;80:173-182. doi: 10.1016/j.biopha.2016.03.015. Epub 2016 Mar 26.
In this work, β-cyclodextrin (β-CD) - polyethyleneglycol (PEG) - polyethyleneimine (PEI) coated iron oxide nanoparticles (Fe3O4-β-CD-PEG-PEI) were developed as drug carriers for drug delivery applications. The 5- Fluorouracil (5-FU) was chosen as model drug molecule. The developed nanoparticles (Fe3O4-β-CD-PEG-PEI) were characterized by various techniques such as Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and vibrating sample magnetometry (VSM). The average particles size range of 5-FU loaded Fe3O4-β-CD, Fe3O4-β-CD-PEG and Fe3O4-β-CD-PEG-PEI nanoparticles were from 151 to 300nm and zeta potential value of nanoparticles were from -43mV to -20mV as measured using Malvern Zetasizer. Finally, encapsulation efficiency (EE), loading capacity (LC) and in-vitro drug release performance of 5-FU drug loaded Fe3O4-β-CD, Fe3O4-β-CD-PEG and Fe3O4-β-CD-PEG-PEI nanoparticles was evaluated by UV-vis spectroscopy. In-vitro cytotoxicity tests investigated by MTT assay indicate that 5-FU loaded Fe3O4-β-CD-PEG-PEI nanoparticles were toxic to cancer cells and non-toxic to normal cells. The in-vitro release behavior of 5-FU from drug (5-FU) loaded Fe3O4-β-CD-PEG-PEI composite at different pH values and temperature was studied. It was found that 5-FU was released faster in pH 6.8 than in the acidic mediums (pH 1.2), and the released quantity was higher. Therefore, the newly prepared Fe3O4-β-CD-PEG-PEI carrier exhibits a promising potential capability for anticancer drug delivery in tumor therapy.
在这项工作中,β-环糊精(β-CD)-聚乙二醇(PEG)-聚乙烯亚胺(PEI)包覆的氧化铁纳米粒子(Fe3O4-β-CD-PEG-PEI)被开发为药物输送应用的药物载体。选择 5-氟尿嘧啶(5-FU)作为模型药物分子。所开发的纳米粒子(Fe3O4-β-CD-PEG-PEI)通过各种技术进行了表征,例如傅里叶变换红外(FTIR)光谱、X 射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和振动样品磁强计(VSM)。负载 5-FU 的 Fe3O4-β-CD、Fe3O4-β-CD-PEG 和 Fe3O4-β-CD-PEG-PEI 纳米粒子的平均粒径范围为 151 至 300nm,纳米粒子的 zeta 电位值为-43mV 至-20mV,如使用 Malvern Zetasizer 测量。最后,通过紫外可见光谱评估了负载 5-FU 的 Fe3O4-β-CD、Fe3O4-β-CD-PEG 和 Fe3O4-β-CD-PEG-PEI 纳米粒子的包封效率(EE)、载药量(LC)和体外药物释放性能。通过 MTT 测定法进行的体外细胞毒性测试表明,负载 5-FU 的 Fe3O4-β-CD-PEG-PEI 纳米粒子对癌细胞有毒,对正常细胞无毒。研究了不同 pH 值和温度下负载 5-FU 的 Fe3O4-β-CD-PEG-PEI 复合药物在体外的释放行为。结果发现,在 pH 6.8 下比在酸性介质(pH 1.2)中释放速度更快,释放量更高。因此,新制备的 Fe3O4-β-CD-PEG-PEI 载体在肿瘤治疗中具有作为抗癌药物输送载体的潜在能力。
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