Department of Neurology, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Department of Emergency, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China.
Int J Nanomedicine. 2018 Apr 23;13:2491-2505. doi: 10.2147/IJN.S157935. eCollection 2018.
BACKGROUND: Thermoresponsive nanoparticles have become an attractive candidate for designing combined multimodal therapy strategies because of the onset of hyperthermia and their advantages in synergistic cancer treatment. In this paper, novel cetuximab (C225)-encapsulated core-shell FeO@Au magnetic nanoparticles (FeO@Au-C225 composite-targeted MNPs) were created and applied as a therapeutic nanocarrier to conduct targeted magneto-photothermal therapy against glioma cells. METHODS: The core-shell FeO@Au magnetic nanoparticles (MNPs) were prepared, and then C225 was further absorbed to synthesize FeO@Au-C225 composite-targeted MNPs. Their morphology, mean particle size, zeta potential, optical property, magnetic property and thermal dynamic profiles were characterized. After that, the glioma-destructive effect of magnetic fluid hyperthermia (MFH) combined with near-infrared (NIR) hyperthermia mediated by FeO@Au-C225 composite-targeted MNPs was evaluated through in vitro and in vivo experiments. RESULTS: The inhibitory and apoptotic rates of FeO@Au-C225 composite-targeted MNPs-mediated combined hyperthermia (MFH+NIR) group were significantly higher than other groups in vitro and the marked upregulation of caspase-3, caspase-8, and caspase-9 expression indicated excellent antitumor effect by inducing intrinsic apoptosis. Furthermore, FeO@Au-C225 composite-targeted MNPs-mediated combined hyperthermia (MFH+NIR) group exhibited significant tumor growth suppression compared with other groups in vivo. CONCLUSION: Our studies illustrated that FeO@Au-C225 composite-targeted MNPs have great potential as a promising nanoplatform for human glioma therapy and could be of great value in medical use in the future.
背景:热响应纳米粒子因其能够引发热疗以及在协同癌症治疗方面的优势,已成为设计联合多模态治疗策略的有吸引力的候选者。在本文中,我们制备了新型的包载西妥昔单抗(C225)的核壳结构 FeO@Au 磁性纳米粒子(FeO@Au-C225 复合靶向 MNPs),并将其作为治疗性纳米载体,用于针对神经胶质瘤细胞的靶向磁光热疗。
方法:制备了核壳结构的 FeO@Au 磁性纳米粒子(MNPs),然后进一步吸收 C225 以合成 FeO@Au-C225 复合靶向 MNPs。对其形态、平均粒径、Zeta 电位、光学特性、磁性能和热动力学特性进行了表征。然后,通过体外和体内实验评估了由 FeO@Au-C225 复合靶向 MNPs 介导的磁流体热疗(MFH)与近红外(NIR)热疗相结合对神经胶质瘤的破坏作用。
结果:体外实验中,FeO@Au-C225 复合靶向 MNPs 介导的联合热疗(MFH+NIR)组的抑制率和凋亡率明显高于其他组,并且 caspase-3、caspase-8 和 caspase-9 的表达明显上调,表明通过诱导内在凋亡产生了优异的抗肿瘤作用。此外,与其他组相比,体内实验中 FeO@Au-C225 复合靶向 MNPs 介导的联合热疗(MFH+NIR)组表现出显著的肿瘤生长抑制作用。
结论:我们的研究表明,FeO@Au-C225 复合靶向 MNPs 具有作为人类神经胶质瘤治疗有前途的纳米平台的巨大潜力,并且在未来的医学应用中可能具有很高的价值。
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