The photothermal therapy （PTT） technique is regarded as a promising method for cancer treatment. However, one of the obstacles preventing its clinical application is the non-degradability and biotoxicity of the exis...The photothermal therapy （PTT） technique is regarded as a promising method for cancer treatment. However, one of the obstacles preventing its clinical application is the non-degradability and biotoxicity of the existing heavy-metal and carbon-based therapeutic agents. Therefore, a PTT material with a high photothermal efficiency, low toxicity, and good biocompatibility is urgently wanted. Herein, we report a titanium oxide-based therapeutic agent with a high efficacy and low toxicity for the PTT process. We demonstrated that Magneliphase Ti8015 nanoparticles fabricated by the arc-melting method exhibit 〉98% absorption of near infrared light and a superior photothermal therapy effect in the in vivo mouse model. The Ti8O15 nanoparticle PTT material also shows a good biocompatibility and biosafety. Our study reveals Magneli-phase titanium oxide as a new family of PTT agents and introduces new applications of titanium oxides for photothermal conversion.展开更多
基金Acknowledgements This work was supported by the National Natural Science Foundation of China （Nos. 51302180, 51222203, 51002100, and 51132006）, the National Basic Research Program of China （Nos. 2011CB911002 and 2012CB932601）, and a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions.
文摘The photothermal therapy （PTT） technique is regarded as a promising method for cancer treatment. However, one of the obstacles preventing its clinical application is the non-degradability and biotoxicity of the existing heavy-metal and carbon-based therapeutic agents. Therefore, a PTT material with a high photothermal efficiency, low toxicity, and good biocompatibility is urgently wanted. Herein, we report a titanium oxide-based therapeutic agent with a high efficacy and low toxicity for the PTT process. We demonstrated that Magneliphase Ti8015 nanoparticles fabricated by the arc-melting method exhibit 〉98% absorption of near infrared light and a superior photothermal therapy effect in the in vivo mouse model. The Ti8O15 nanoparticle PTT material also shows a good biocompatibility and biosafety. Our study reveals Magneli-phase titanium oxide as a new family of PTT agents and introduces new applications of titanium oxides for photothermal conversion.
