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A novel macrophage-mediated biomimetic delivery system with NIR-triggered release for prostate cancer therapy
Journal of Nanobiotechnology ( IF 10.2 ) Pub Date : 2019-07-10 , DOI: 10.1186/s12951-019-0513-z
Lei Qiang , Zheng Cai , Wenjun Jiang , Jiyong Liu , Zongguang Tai , Guorui Li , Chunai Gong , Shen Gao , Yuan Gao

Macrophages with tumor-tropic migratory properties can serve as a cellular carrier to enhance the efficacy of anti neoplastic agents. However, limited drug loading (DL) and insufficient drug release at the tumor site remain the main obstacles in developing macrophage-based delivery systems. In this study, we constructed a biomimetic delivery system (BDS) by loading doxorubicin (DOX)-loaded reduced graphene oxide (rGO) into a mouse macrophage-like cell line (RAW264.7), hoping that the newly constructed BDS could perfectly combine the tumor-tropic ability of macrophages and the photothermal property of rGO. At the same DOX concentration, the macrophages could absorb more DOX/PEG-BPEI-rGO than free DOX. The tumor-tropic capacity of RAW264.7 cells towards RM-1 mouse prostate cancer cells did not undergo significant change after drug loading in vitro and in vivo. PEG-BPEI-rGO encapsulated in the macrophages could effectively convert the absorbed near-infrared light into heat energy, causing rapid release of DOX. The BDS showed excellent anti-tumor efficacy in vivo. The BDS that we developed in this study had the following characteristic features: active targeting of tumor cells, stimuli-release triggered by near-infrared laser (NIR), and effective combination of chemotherapy and photothermotherapy. Using the photothermal effect produced by PEG-BPEI-rGO and DOX released from the macrophages upon NIR irradiation, MAs-DOX/PEG-BPEI-rGO exhibited a significant inhibitory effect on tumor growth.

中文翻译:

具有近红外触发释放的新型巨噬细胞介导的仿生传递系统,用于前列腺癌治疗

具有嗜肿瘤性迁徙特性的巨噬细胞可以用作细胞载体,以增强抗肿瘤药的功效。然而,有限的药物负载(DL)和在肿瘤部位的药物释放不足仍然是开发基于巨噬细胞的递送系统的主要障碍。在这项研究中,我们通过将负载阿霉素(DOX)的还原氧化石墨烯(rGO)加载到小鼠巨噬细胞样细胞系(RAW264.7)中来构建仿生传递系统(BDS),希望新构建的BDS可以完美结合巨噬细胞的嗜肿瘤能力和rGO的光热特性 在相同的DOX浓度下,巨噬细胞可吸收的DOX / PEG-BPEI-rGO比游离DOX多。RAW264的嗜肿瘤能力。在体外和体内加载药物后,朝向RM-1小鼠前列腺癌细胞的7个细胞未发生显着变化。封装在巨噬细胞中的PEG-BPEI-rGO可以有效地将吸收的近红外光转换成热能,从而引起DOX的快速释放。BDS在体内显示出优异的抗肿瘤功效。我们在这项研究中开发的BDS具有以下特征:肿瘤细胞的主动靶向,近红外激光(NIR)触发的刺激释放以及化学疗法和光热疗法的有效结合。利用PEG-BPEI-rGO和巨噬细胞在近红外照射下释放的DOX产生的光热效应,MAs-DOX / PEG-BPEI-rGO对肿瘤的生长具有显着的抑制作用。封装在巨噬细胞中的PEG-BPEI-rGO可以有效地将吸收的近红外光转换成热能,从而引起DOX的快速释放。BDS在体内显示出优异的抗肿瘤功效。我们在这项研究中开发的BDS具有以下特征:肿瘤细胞的主动靶向,近红外激光(NIR)触发的刺激释放以及化学疗法和光热疗法的有效结合。利用PEG-BPEI-rGO和巨噬细胞在近红外照射下释放的DOX产生的光热效应,MAs-DOX / PEG-BPEI-rGO对肿瘤的生长具有显着的抑制作用。封装在巨噬细胞中的PEG-BPEI-rGO可以有效地将吸收的近红外光转换成热能,从而引起DOX的快速释放。BDS在体内显示出优异的抗肿瘤功效。我们在这项研究中开发的BDS具有以下特征:肿瘤细胞的主动靶向,近红外激光(NIR)触发的刺激释放以及化学疗法和光热疗法的有效结合。利用PEG-BPEI-rGO和巨噬细胞在近红外照射下释放的DOX产生的光热效应,MAs-DOX / PEG-BPEI-rGO对肿瘤的生长具有显着的抑制作用。肿瘤细胞的主动靶向,近红外激光(NIR)触发的刺激释放以及化学疗法和光热疗法的有效结合。利用PEG-BPEI-rGO和巨噬细胞在近红外照射下释放的DOX产生的光热效应,MAs-DOX / PEG-BPEI-rGO对肿瘤的生长具有显着的抑制作用。肿瘤细胞的主动靶向,近红外激光(NIR)触发的刺激释放以及化学疗法和光热疗法的有效结合。利用PEG-BPEI-rGO和巨噬细胞在近红外照射下释放的DOX产生的光热效应,MAs-DOX / PEG-BPEI-rGO对肿瘤的生长具有显着的抑制作用。
更新日期:2019-07-10
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