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Construction of a graphene oxide based noncovalent multiple nanosupramolecular assembly as a scaffold for drug delivery

机译:基于氧化石墨烯的非共价多纳米超分子组装体的构建作为药物递送的支架

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摘要

A multiple supramolecular assembly, in which a folic acid-modified β-cyclodextrin (1) acted as a target unit, an adamantanyl porphyrin (2) acted as a linker unit, and graphene oxide acted as a carrier unit, was successfully fabricated through non-covalent interactions and comprehensively investigated by means of UV/Vis, fluorescence, and X-ray photoelectron spectroscopies, and electron microscopy. Significantly, the graphene oxide unit could associate with the anticancer drug doxorubicin through π-π interactions, and the folic acid-modified β-cyclodextrin unit could recognize the folic acid receptors in cancer cells. Owing to the cooperative contribution of these three units, the resulting multiple supramolecular assembly, after association with doxorubicin, exhibited better drug activity and much lower toxicity than free doxorubicin in vivo.
机译:通过以下方法成功地制备了一个多分子超分子组装体:叶酸修饰的β-环糊精(1)作为靶标单元,金刚烷基卟啉(2)作为连接单元,氧化石墨烯作为载体单元。 -共价相互作用,并通过紫外线/可见光,荧光和X射线光电子能谱以及电子显微镜进行了全面研究。重要的是,氧化石墨烯单元可以通过π-π相互作用与抗癌药阿霉素结合,而叶酸修饰的β-环糊精单元可以识别癌细胞中的叶酸受体。由于这三个单元的协同作用,与阿霉素结合后,所产生的多个超分子组装体在体内比游离阿霉素具有更好的药物活性和更低的毒性。

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