光热治疗
光动力疗法
单线态氧
纳米棒
材料科学
纳米医学
纳米技术
纳米颗粒
光敏剂
纳米材料
生物医学工程
化学
医学
光化学
氧气
有机化学
作者
Wenjun Miao,Hyungjun Kim,Vipul Gujrati,Jin Yong Kim,Hyeongsu Jon,Yonghyun Lee,Minsuk Choi,Jinjoo Kim,So‐Young Lee,Dong Yun Lee,Sukmo Kang,Sangyong Jon
出处
期刊:Theranostics
[Ivyspring International Publisher]
日期:2016-01-01
卷期号:6 (13): 2367-2379
被引量:59
摘要
Combination of photodynamic therapy (PDT) with photothermal therapy (PTT) has achieved significantly improved therapeutic efficacy compared to a single phototherapy modality.However, most nanomaterials used for combined PDT/PTT are made of non-biodegradable materials (e.g., gold nanorods, carbon nanotubes, and graphenes) and may remain intact in the body for long time, raising concerns over their potential long-term toxicity.Here we report a new combined PDT/PTT nanomedicine, designated SP 3 NPs, that exhibit photo-decomposable, photodynamic and photothermal properties.SP 3 NPs were prepared by self-assembly of PEGylated cypate, comprising FDA-approved PEG and an ICG derivative.We confirmed the ability of SP 3 NPs to generate both singlet oxygen for a photodynamic effect and heat for photothermal therapy in response to NIR laser irradiation in vitro.Also, the unique ability of SP 3 NPs to undergo irreversible decomposition upon NIR laser irradiation was demonstrated.Further our experimental results demonstrated that SP 3 NPs strongly accumulated in tumor tissue owing to their highly PEGylated surface and relatively small size (~60 nm), offering subsequent imaging-guided combined PDT/PTT treatment that resulted in tumor eradication and prolonged survival of mice.Taken together, our SP 3 NPs described here may represent a novel and facile approach for next-generation theranostics with great promise for translation into clinical practice in the future.
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