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A thermosensitive nanoplatform for photoacoustic imaging and NIR light triggered chemo-photothermal therapy.
Biomaterials Science ( IF 5.8 ) Pub Date : 2020-06-17 , DOI: 10.1039/d0bm00810a
Zikang Chen 1 , Yinuo Tu , Di Zhang , Chuang Liu , Yuping Zhou , Xiang Li , Xu Wu , Ruiyuan Liu
Affiliation  

Temperature-sensitive liposomes (TSLs) have received constant attention due to the release of contents around the physiological temperature, which holds great potential in the treatment of tumors. However, the development of TSLs is limited by the long-term biotoxicity and low photothermal conversion efficiency of heat-generation materials. In this study, we develop a new D–A (donor–acceptor) structure NIR absorbing dye (C720) which exhibits a high photothermal conversion efficiency (62%), good photostability, and photothermal reproducibility. Then C720 is doped in the lipid bilayer and DOX (doxorubicin) is wrapped in the core of temperature sensitive liposomes to construct a C720 and DOX-loaded thermosensitive nanoplatform (CDTSL). The as-prepared CDTSL achieves NIR light controlled drug release and can be applied for photoacoustic imaging. In vitro and in vivo studies confirm that CDTSL exhibits high tumor suppressive efficiency by synergistic photothermal therapy and chemotherapy. Our research provides fundamental insights for the rational design and preparation of a promising nanoplatform for photoacoustic imaging and chemo-photothermal therapy.

中文翻译:

用于光声成像和近红外光的热敏纳米平台触发了化学光热疗法。

由于在生理温度附近释放内容物,温度敏感性脂质体(TSL)一直受到关注,这在治疗肿瘤方面具有巨大潜力。但是,TSL的发展受到发热材料的长期生物毒性和低光热转化效率的限制。在这项研究中,我们开发了一种新的D-A(供体-受体)结构近红外吸收染料(C720),它具有很高的光热转化效率(62%),良好的光稳定性和光热再现性。然后将C720掺杂在脂质双层中,并将DOX(阿霉素)包裹在温度敏感脂质体的核心中,以构建C720和装载DOX的热敏纳米平台(CDTSL)。所制备的CDTSL可实现NIR光控药物释放,并可用于光声成像。体外体内研究证实,通过协同光热疗法和化学疗法,CDTSL具有很高的抑癌效率。我们的研究为合理设计和制备用于光声成像和化学光热疗法的有前途的纳米平台提供了基础见解。
更新日期:2020-07-28
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