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首页> 外文期刊>Journal of drug targeting >Magnetic albumin immuno-nanospheres as an efficient gene delivery system for a potential use in lung cancer: preparation, in vitro targeting and biological effect analysis
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Magnetic albumin immuno-nanospheres as an efficient gene delivery system for a potential use in lung cancer: preparation, in vitro targeting and biological effect analysis

机译:磁性白蛋白免疫纳米球作为肺癌潜在使用的有效基因递送系统:制备,体外靶向和生物效应分析

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摘要

Magnetic albumin immuno-nanospheres (MAINs), simultaneously loaded with super-paramagnetic iron oxide nanoparticles for targeting application and anticancer gene, plasmid-survivin/shRNA (pshRNA) and modified with anti-EGFR monoclonal antibody Cetuximab for targeting and treatment agents, were prepared for targeting lung cancer. Transmission electron microscopy images and transfection photographs, respectively, showed that magnetic nanoparticles and pshRNA were successfully encased in the albumin nanospheres. The release profiles in vitro indicated that nanospheres had an obvious effect of sustained release of pshRNA. The results of slide agglutination test and immunofluorescence analysis demonstrated that the immuno-nanospheres retained the immuno-reactivity of Cetuximab. The MAINs significantly increased adherence and uptake by GLC-82 lung cancer cells over-expressed epidermal growth factor receptor over a magnetic albumin nanospheres (MANs) control. The pshRNA-loaded MAINs formulation was more effective than equimolar doses of free Cetuximab, single magnetic targeting with pshRNA (pshRNA-loaded MANs) or single monoclonal antibody targeting with pshRNA (pshRNA-loaded AINs) in the treatment of GLC-82 lung cancer cells. Collectively, the study indicates that the novel pshRNA-loaded magnetic immuno-nanospheres represent a promising approach for magnetic and monoclonal antibody-dependent gene targeting in lung cancer therapy.
机译:制备了磁性白蛋白免疫纳米球(MANSE),同时负载用于靶向应用的超顺磁性氧化铁纳米颗粒和抗癌基因、质粒survivin/shRNA(pshRNA),并用抗EGFR单克隆抗体西妥昔单抗修饰以用于靶向和治疗剂,用于靶向肺癌。透射电子显微镜图像和转染照片分别显示,磁性纳米颗粒和pshRNA成功包裹在白蛋白纳米球中。体外释放曲线表明,纳米微球对pshRNA有明显的缓释作用。玻片凝集试验和免疫荧光分析结果表明,免疫纳米球保留了西妥昔单抗的免疫反应性。与磁性白蛋白纳米球(MANs)对照组相比,MAINs显著增加了GLC-82肺癌细胞对表皮生长因子受体的粘附和摄取。在GLC-82肺癌细胞的治疗中,载pshRNA的主要制剂比等摩尔剂量的游离西妥昔单抗、载pshRNA的单磁靶向(pshRNA-loaded MANs)或载pshRNA的单单克隆抗体靶向(载pshRNA-loaded AINs)更有效。总的来说,这项研究表明,新型载pshRNA的磁性免疫纳米球代表了肺癌治疗中磁性和单克隆抗体依赖性基因靶向的一种有希望的方法。

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