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Deep-Tissue Photothermal Therapy Using Laser Illumination at NIR-IIa Window

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文摘 Photothermal therapy (PTT) using near-infrared (NIR) light for tumor treatment has triggered extensive attentions because of its advantages of noninvasion and convenience. The current research on PTT usually uses lasers in the first NIR window (NIR-I; 700-900 nm) as irradiation source. However, the second NIR window (NIR-II; 1000-1700 nm) especially NIRIIa window (1300-1400 nm) is considered much more promising in diagnosis and treatment as its superiority in penetration depth and maximum permissible exposure over NIR-I window. Hereby, we propose the use of laser excitation at 1275 nm, which is approved by Food and Drug Administration for physical therapy, as an attractive technique for PTT to balance of tissue absorption and scattering with water absorption. Specifically, CuS-PEG nanoparticles with similar absorption values at 1275 and 808 nm, a conventional NIR-I window for PTT, were synthesized as PTT agents and a comparison platform, to explore the potential of 1275 and 808 nm lasers for PTT, especially in deep-tissue settings. The results showed that 1275 nm laser was practicable in PTT. It exhibited much more desirable outcomes in cell ablation in vitro and deep-tissue antitumor capabilities in vivo compared to that of 808 nm laser. NIR-IIa laser illumination is superior to NIR-I laser for deep-tissue PTT, and shows high potential to improve the PTT outcome.
来源 Nano-Micro Letters ,2020,12(3):38 【核心库】
DOI 10.1007/s40820-020-0378-6
关键词 Photothermal therapy ; Deep-tissue ; NIR-IIa ; 1275 nm laser ; Molecular imaging
地址

1. Institute of Molecular Medicine, College of Life and Health Sciences, Northeastern University, Shenyang, 110000  

2. Department of Neurosurgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, 110000  

3. Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130000  

4. Molecular Imaging Program at Stanford, Stanford University, USA, Palo Alto, CA 94301

语种 英文
文献类型 研究性论文
ISSN 2311-6706
学科 一般工业技术
基金 supported, in part, by the Natural Science Foundation of China ;  the Clinical Capability Construction Project for Liaoning Provincial Hospitals ;  the China postdoctoral science foundation Grant
文献收藏号 CSCD:6728351

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