Characteristics of Thermosensitive and Targeted F127-Triethoxysilane/Gold Nanorod Combined with Photothermal Therapy in Tumor Model Mice.

Chien-Chung Hsia, Po-Jung Chen, Mao-Chien Weng, Mei-Hui Wang
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引用次数: 0

Abstract

Even with all the recent technological improvements, cancer remains to be the disease with the highest impact on global health. Due to obviously disadvantages or limitations on traditional therapy, researchers are engaged to search for safely and effective methods in cancers' therapy. Photothermal therapy (PTT) has been employed in treating cancers and several of other diseases. In this study, novel thermosensitive and targeting nanoparticle, C225-silane-F127/gold nanorod (C-SFGR) combined with PTT was investigated in EGFR-overexpressing xenografts mice model. For better light to heat transformation exposed with 808 nm near-infrared (NIR) laser, the diameter of thermosensitive C-SFGR was designed at about 120 nm. To address the biocompatibility, the viability of A549 cell line was greater than 80% under high concentrations of C-SFGR (1,000 μg/mL), indicating its low cytotoxicity. After intravenous injection of C-SFGR and combined with NIR treatment for 2 min in A549 bearing mice, tumors were almost completely shriveled after 2 weeks. For developing as theranostic agent, C-SFGR was then labeled with 67Ga, with radiochemical purity over 98%. These present results suggest that C-SFGR could be also applied as a SPECT-imaging agent and as an effective antitumor agent.

热敏性和靶向性f127 -三乙氧基硅烷/金纳米棒联合光热治疗肿瘤模型小鼠的特性
即使有了最近所有的技术进步,癌症仍然是对全球健康影响最大的疾病。由于传统治疗方法的明显缺陷或局限性,研究人员一直致力于寻找安全有效的癌症治疗方法。光热疗法(PTT)已被用于治疗癌症和其他几种疾病。本研究将新型热敏靶向纳米颗粒c225 -硅烷- f127 /金纳米棒(C-SFGR)联合PTT在过表达egfr的异种移植小鼠模型中进行了研究。为了在808 nm近红外(NIR)激光照射下实现更好的光热转换,将热敏C-SFGR的直径设计为120 nm左右。在生物相容性方面,高浓度C-SFGR (1000 μg/mL)对A549细胞株的存活率大于80%,表明其具有较低的细胞毒性。A549小鼠经静脉注射C-SFGR并联合NIR治疗2分钟后,2周后肿瘤几乎完全萎缩。C-SFGR经67Ga标记,放射化学纯度超过98%,可开发为治疗剂。这些结果表明,C-SFGR也可以作为spect显像剂和有效的抗肿瘤剂。
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来源期刊
Journal of nanoscience and nanotechnology
Journal of nanoscience and nanotechnology 工程技术-材料科学:综合
自引率
0.00%
发文量
0
审稿时长
3.6 months
期刊介绍: JNN is a multidisciplinary peer-reviewed journal covering fundamental and applied research in all disciplines of science, engineering and medicine. JNN publishes all aspects of nanoscale science and technology dealing with materials synthesis, processing, nanofabrication, nanoprobes, spectroscopy, properties, biological systems, nanostructures, theory and computation, nanoelectronics, nano-optics, nano-mechanics, nanodevices, nanobiotechnology, nanomedicine, nanotoxicology.
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