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Dextran coated Fe_3O_4 nanoparticles as a near-infrared laser-driven photothermal agent for efficient ablation of cancer cells in vitro and in vivo

机译:葡聚糖包覆的Fe_3O_4纳米粒子作为近红外激光驱动的光热剂,可在体内外有效消融癌细胞

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摘要

The photothermal effect of dextran coated Fe_3O_4 nanoparticles for cancer therapy is investigated in this work. The dextran/Fe_3O_4 nanoparticles were prepared by coprecipitation method. Results demonstrated that the dextran not only isolated the interior Fe_3O_4 nanoparticles from oxygen and water to enhance the photothermal stability, but also enhanced the biocompatibility of Fe_3O_4 nanoparticles. In vitro experiments indicated that dextran/Fe_3O_4 nanoparticles showed low toxicity to cells without any irradation. After near-infrared (NIR) laser irradiation, however, the viabilities of tumor cells were effectively suppressed. Further in vivo experimental studies found that mice tumor growth was significantly inhibited by the photothermal effect of dextran/Fe_3O_4 nanoparticles. After 28 days the tumor was completely cleared. These dextran/Fe_3O_4 nanoparticles have bio-security and high photothermal efficiency at the same time, thus promising high clinical potential.
机译:在这项工作中研究了葡聚糖包被的Fe_3O_4纳米颗粒对癌症治疗的光热效应。采用共沉淀法制备了葡聚糖/ Fe_3O_4纳米颗粒。结果表明,右旋糖酐不仅从氧气和水中分离出内部Fe_3O_4纳米颗粒以增强光热稳定性,而且还增强了Fe_3O_4纳米颗粒的生物相容性。体外实验表明,右旋糖酐/ Fe_3O_4纳米颗粒对细胞无刺激性,显示低毒性。但是,在近红外(NIR)激光照射后,肿瘤细胞的活力得到了有效抑制。进一步的体内实验研究发现,右旋糖酐/ Fe_3O_4纳米粒子的光热作用显着抑制了小鼠肿瘤的生长。 28天后,肿瘤被完全清除。这些右旋糖酐/ Fe_3O_4纳米粒子同时具有生物安全性和高光热效率,因此具有很高的临床潜力。

著录项

  • 来源
    《Materials science & engineering》 |2018年第9期|46-56|共11页
  • 作者单位

    School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China,Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

    Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

    Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

    Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

    Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

    School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China;

    Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

    Institute of Industrial and Consumer Product Safety, Chinese Academy of Inspection and Quarantine, Beijing 100176, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Dextran/Fe_3O_4 nanoparticles; Near-infrared laser; Phototherapy therapy; Tumor;

    机译:Dextran / Fe_3O_4纳米粒子;近红外激光;光疗疗法;瘤;

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