体外评价羧甲基壳聚糖超顺磁氧化铁纳米粒的细胞毒性和巨噬细胞的摄取
The in vitro evaluation on O-carboxymethyl chitosan superparamagnetic iron oxide nanoparticles
作者:范彩霞;高文慧;陈志良;陈志喜;李明琰;
Author:
收稿日期: 年卷(期)页码:2010,25(03):-290-293
期刊名称:华西药学杂志
Journal Name:WEST CHINA JOURNAL OF PHARMACEUTICAL SCIENCES
关键字:羧甲基壳聚糖超顺磁氧化铁纳米粒;细胞毒性;巨噬细胞摄取;体外
Key words:
基金项目:
中文摘要
目的体外评价自制羧甲基壳聚糖超顺磁氧化铁纳米粒(OCMCS-SPIO-NPs)的细胞毒性和逃避巨噬细胞的吞噬能力。方法以菲立磁和未包被的超顺磁氧化铁纳米粒为对照,采用四唑盐(MTT)比色法考察OCMCS-SPIO-NPs对LO2细胞(正常肝细胞株)和A549(人肺腺癌细胞株)的细胞毒性;用菲洛嗪法及普鲁士蓝法考察OCMCS-SPIO-NPs纳米粒并评价其体外的抗吞噬能力。结果 SPIO-NPs经羧甲基壳聚糖共价修饰后,对LO2和A549细胞的细胞毒性明显降低,OCMCS-SPIO-NPs的细胞毒性和dextran-SPIO的细胞毒性无显著性差异(P>0.05),其细胞毒性与培养基中SPIO的浓度呈正相关;与3种SPIO纳米粒孵化24h后,RAW264.7细胞内铁含量随培养基中SPIO的含量增加而增加,细胞内铁含量依次为:未包被SPIO-NPs>dextran-SPIO-NPs>CMCS-SPIO-NPs组(P
参考文献
[1]Gupta AK,Gupta M.Synthesis and surface engineering of iron oxide nanoparticles for biomedical applications[J].Biomaterials,2005,26(18):3995-4021.
[2]Gupta AK,Gupta M.Cytotoxicity suppression and cellular uptake enhancement of surface modified magnetic nanoparticles[J].Bio-materials,2005,26(13):1565-1573.
[3]Muller K,Skepper JN,Posfai M,et al.Effect of ultrasmall super-paramagnetic iron oxide nanoparticles(Ferumoxtran-10)on human monocyte-macrophages in vitro[J].Biomaterials,2007,28(9):1629-1642.
[4]Corot C,Robert P,Idee JM,et al.Recent advances in iron oxide nanocrystal technology for medical imaging[J].Adv Drug Deliv Rev,2006,58(14):1471-1504.
[5]张光存.USPIO增强MRI在诊断颈部转移淋巴结中的应用[J].实用放射学杂志,2007,23(5):697-698.
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