한빛사논문
- 조회2,280
Abstract
Hwa Seung Han†§, Ki Young Choi†§, Hansang Lee†, Minchang Lee†, Jae Yoon An†, Sol Shin†, Seunglee Kwon†, Doo Sung Lee†, and Jae Hyung Park*†‡
†School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea
‡Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul 06351, Republic of Korea
*Corresponding Author
Author Contributions
§These authors contributed equally.
Abstract
Optically active nanomaterials have shown great promise as a nanomedicine platform for photothermal or photodynamic cancer therapies. Herein, we report a gold-nanoclustered hyaluronan nanoassembly (GNc-HyNA) for photothermally boosted photodynamic tumor ablation. Unlike other supramolecular gold constructs based on gold nanoparticle building blocks, this system utilizes the nanoassembly of amphiphilic hyaluronan conjugates as a drug carrier for a hydrophobic photodynamic therapy agent verteporfin, a polymeric reducing agent, and an organic nanoscaffold upon which gold can grow. Gold nanoclusters were selectively installed on the outer shell of the hyaluronan nanoassembly, forming a gold shell. Given the dual protection effect by the hyaluronan self-assembly as well as by the inorganic gold shell, verteporfin-encapsulated GNc-HyNA (Vp-GNc-HyNA) exhibited outstanding stability in the bloodstream. Interestingly, the fluorescence and photodynamic properties of Vp-GNc-HyNA were considerably quenched due to the gold nanoclusters covering the surface of the nanoassemblies; however, photothermal activation by 808 nm laser irradiation induced a significant increase in temperature, which empowered the PDT effect of Vp-GNc-HyNA. Furthermore, fluorescence and photodynamic effects were recovered far more rapidly in cancer cells due to certain intracellular enzymes, particularly hyaluronidases and glutathione. Vp-GNc-HyNA exerted a great potential to treat tumors both in vitro and in vivo. Tumors were completely ablated with a 100% survival rate and complete skin regeneration over the 50 days following Vp-GNc-HyNA treatment in an orthotopic breast tumor model. Our results suggest that photothermally boosted photodynamic therapy using Vp-GNc-HyNA can offer a potent therapeutic means to eradicate tumors.
논문정보
- Research article
- 2016년 11월 (BRIC 등록일 2016-11-18)
- 국내 연구진
- 바이오·의료융합 > 바이오센싱 및 나노바이오물질
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