Weiyong Hong1,2, Fangyuan Guo2, Nan Yu2, Sanjun Ying2, Bang Lou2, Jiangqing Wu2, Ying Gao2, Xugang Ji2, Haiying Wang1, Aiqin Li3, Guoping Wang4, Gensheng Yang2. 1. Department of Pharmacy, Taizhou Municipal Hospital, Taizhou, 318000, People's Republic of China. 2. College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou, 310014, People's Republic of China. 3. Zhejiang Share Bio-Pharm Co., Ltd, Hangzhou, 310019, People's Republic of China. 4. Zhejiang Dayang Biotech Group Co., Ltd, Hangzhou, 311616, People's Republic of China.
Abstract
PURPOSE: A novel folate receptor-targeted β-cyclodextrin (β-CD) drug delivery vehicle was constructed to improve the bioavailability, biosafety, and drug loading capacity of curcumin. Controlled release and targeted delivery was achieved by modifying the nanoparticles with folic acid (FA). METHODS: Folate-conjugated β-CD-polycaprolactone block copolymers were synthesized and characterized. Curcumin-loaded nanoparticles (FA-Cur-NPs) were structured by self-assembly. The physicochemical properties, stability, release behavior and tumor-targeting ability of the fabricated nanoparticles were studied. RESULTS: The average particle size and drug loading of FA-Cur-NPs was 151.8 nm and 20.27%, respectively. Moreover, the FA-Cur-NPs exhibited good stability in vitro for 72 h. The drug release profiles showed that curcumin from FA-Cur-NPs was released significantly faster in a pH 6.4 phosphate buffered solution (PBS) than in pH 7.4, indicating that curcumin can be enriched around the tumor site compared with normal cells. Additionally, the internalization of FA-Cur-NPs was aided by FA receptor-mediated endocytosis, and its cytotoxicity was proportional to the cellular uptake efficiency. Furthermore, in vivo studies confirmed that FA-Cur-NPs exhibited marked accumulation in the tumor site and excellent antitumor activity. CONCLUSION: These findings suggest that FA-Cur-NPs are a promising approach for improving cancer therapy through active targeting and controllable release.
PURPOSE: A novel folate receptor-targeted β-cyclodextrin (β-CD) drug delivery vehicle was constructed to improve the bioavailability, biosafety, and drug loading capacity of curcumin. Controlled release and targeted delivery was achieved by modifying the nanoparticles with folic acid (FA). METHODS: Folate-conjugated β-CD-polycaprolactone block copolymers were synthesized and characterized. Curcumin-loaded nanoparticles (FA-Cur-NPs) were structured by self-assembly. The physicochemical properties, stability, release behavior and tumor-targeting ability of the fabricated nanoparticles were studied. RESULTS: The average particle size and drug loading of FA-Cur-NPs was 151.8 nm and 20.27%, respectively. Moreover, the FA-Cur-NPs exhibited good stability in vitro for 72 h. The drug release profiles showed that curcumin from FA-Cur-NPs was released significantly faster in a pH 6.4 phosphate buffered solution (PBS) than in pH 7.4, indicating that curcumin can be enriched around the tumor site compared with normal cells. Additionally, the internalization of FA-Cur-NPs was aided by FA receptor-mediated endocytosis, and its cytotoxicity was proportional to the cellular uptake efficiency. Furthermore, in vivo studies confirmed that FA-Cur-NPs exhibited marked accumulation in the tumor site and excellent antitumor activity. CONCLUSION: These findings suggest that FA-Cur-NPs are a promising approach for improving cancer therapy through active targeting and controllable release.
Authors: Mazen M El-Hammadi; Ángel V Delgado; Consolación Melguizo; José C Prados; José L Arias Journal: Int J Pharm Date: 2016-11-05 Impact factor: 5.875
Authors: Minming Wu; Zhaoyu Cao; Yunfei Zhao; Rong Zeng; Mei Tu; Jianhao Zhao Journal: Mater Sci Eng C Mater Biol Appl Date: 2016-04-04 Impact factor: 7.328