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SPIO-PICsome: Development of a highly sensitive and stealth-capable MRI nano-agent for tumor detection using SPIO-loaded unilamellar polyion complex vesicles (PICsomes)
https://repo.qst.go.jp/records/46568
https://repo.qst.go.jp/records/4656804228f9c-2d48-45dc-9064-f08210b3ecbe
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-06-26 | |||||
| タイトル | ||||||
| タイトル | SPIO-PICsome: Development of a highly sensitive and stealth-capable MRI nano-agent for tumor detection using SPIO-loaded unilamellar polyion complex vesicles (PICsomes) | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kokuryo, Daisuke
× Kokuryo, Daisuke× Anraku, Yasutaka× Kishimura, Akihiro× Kershaw, Jeffrey× Nishiyama, Nobuhiro× Saga, Tsuneo× Aoki, Ichio× Kataoka, Kazunori× et.al× 國領 大介× Ｋｅｒｓｈａｗ Ｊｅｆｆｒｅｙ× 佐賀 恒夫× 青木 伊知男 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Size controllable polyion complex vesicles (PICsomes), composed of biocompatible poly(ethylene glycol) (PEG) and poly(amino acid)s, have an extremely prolonged lifetime in the bloodstream that enables them to accumulate effectively in tumors via the enhanced permeability and retention (EPR) effect. The purpose of this study was to use PICsomes to synthesize a highly sensitive MRI contrast agent for more precise tumor detection. We synthesized SPIO-Cy5-PICsomes (superparamagnetic iron oxide nanoparticle-loaded Cy5-cross-linked Nano-PICsomes) and characterized them using dynamic light scattering and transmission electron microscopy in vitro and evaluated their ability to detect subcutaneously grafted tumors in vivo with MRI. The transverse relaxivity (r2) of the SPIO-Cy5-PICsomes (r2 = 663 +- 28 mM −1 s−1) was 2.54 times higher than that of bare clinically-used SPIO. In in vivo MRI experiments on mice subcutaneously grafted with colon-26 tumor cells, the tumor signal was significantly altered at 3 h after SPIO-Cy5-PICsome administration and persisted for at least 24 h. Small and early-stage in vivo tumors (3 days after grafting, approximately 4 mm3) were also clearly detected with MRI. SPIO-loaded PICsomes are sensitiveMRI contrast agents that can act as a powerful nanocarrier to detect small tumors for early diagnosis. | |||||
| 書誌情報 |
Journal of Controlled Release 巻 169, 号 3, p. 220-227, 発行日 2013-03 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0168-3659 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.jconrel.2013.3.016. | |||||
