自组装超分子纳米颗粒包络多种药物用于肿瘤细胞的协同杀伤
首发时间:2018-05-24
摘要:以β-环糊精聚合物(poly-β-CD)为载体,包络多种药物合成了自组装超分子纳米颗粒(DOX/HCPT/DTX@poly-β-CD),建立了一种构建灵活的纳米平台用于多种药物协同杀伤肿瘤细胞。该纳米颗粒由poly-β-CD与三种药物(DOX:阿霉素;HCPT:10-羟基喜树碱;DTX:多西紫杉醇)通过主客体作用形成。动态光散射表明该纳米颗粒的水力直径在140 nm左右;流式细胞术结果显示,该纳米颗粒与细胞孵育后,细胞内荧光强度随着时间变化而增强,同时细胞摄取载体包裹药物的效率比游离药物的更高。选择MCF-7细胞和SMMC-7721细胞考察了三种药物的协同效果,MTS实验结果表明三种药物具有良好的协同能力。此外,poly-β-CD具有良好的生物相容性,当其浓度增加到2.5 mM时,细胞存活率仍保持在90 %以上。
关键词: 药物化学 自组装 联合化疗 协同效果 环糊精聚合物
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Self-assembled supramolecular nanoparticles loaded multidrug for synergistic cancer therapy
Abstract:A self-assembled supramolecular nanoparticle (DOX/HCPT/DTX@poly-β-CD) was formulated by combining multidrug into β-cyclodextrin polymer, which was a flexible nanoplatform for synergistic cancer therapy. The nanoparticles were formed by the host-guest interaction between the β-cyclodextrin polymer (poly-β-CD) and three drugs (DOX: doxorubicin; HCPT: 10-hydroxycamptothecine; DTX: docetaxel).The hydraulic diameter of nanoparticles was about 140 nm by dynamic light scattering. The flow cytometry results showed that intracellular fluresencence intensity was gradually enhanced with culture time in cells treated with nanoparticles, and the fluresencence intensity of nanoparticles was stronger than that of free DOX under the same conditions. MCF-7 cells and SMMC-7721 cells were selected for MTS analysis which showed the three drugs had a good synergistic effect. Moreover, the poly-β-CD exhibited excellent biocompatibility, which concentration increased to 2.5 mM and the cell viability was above 90%.
Keywords: Pharmaceutical chemistry self-assembled combined chemotherapy synergistic effect cyclodextrin polymer
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自组装超分子纳米颗粒包络多种药物用于肿瘤细胞的协同杀伤
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