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基于Fe_3O_4(CA)-GO(PEG)磁性纳米粒子的药物运载系统
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摘要
本工作以Fe_3O_4(CA)-GO(PEG)作为磁靶向药物传递载体,以盐酸阿霉素(DOX·HCl)作为药物模型,对该药物载体的载药和释药行为进行了研究,并考察了其体外细胞活性。Fe_3O_4的超顺磁性能可达到定向靶向的目的,GO巨大的比表面积和芳香结构可有效提高载药率,PEG修饰后可提高药物载体的生物相容性。结果表明,该磁性纳米粒子具有良好的载药能力及缓释效果,是安全无毒的药物载体。载药后在外部交变磁场(ACMF)作用下可定向到达肿瘤部位,对肺癌细胞A549具有一定的杀伤作用。
A novel targeted drug delivery system was develeped based on Fe_3O_4(CA)-GO(PEG) nanoparticles for magnetic carrier and DOX for modle drug.This article explored these questions by studying DOX loading, release behaviors and in vitro cell cytotoxicity experiments. Superparamagnetic citrate-coated Fe_3O_4 could achieve significantly magnetic trageting, GO could enhance the drug loading efficiency with a large specific surface area, and PEG could improve the biocompability of the carrier. The results indicated the Fe_3O_4(CA)-GO(PEG) magnetic nanoparticles can exhibit good drug loading and sustained-release effect.which were safe and non-toxic drug carrier. Also, DOX could be carried to the specific tumor sites in an alternating current magnetic field(ACMF), having cytotoxic effects on lung cancer A549 in vitro.
引文
[1]Yang,X;Wang,Y;Huang,X;J.Mater.Chem.,2011,21,3448.
    [2]Chen,W;Wen,X;Zhen;Zheng,X;RSC Adv.,2015,5,69307.

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