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美國布魯克海文儀器公司>技術(shù)文章>Magnetic-Silk Core–Shell Nanoparticles as Potential Carriers for Targeted Delivery of Curcumin into

技術(shù)文章

Magnetic-Silk Core–Shell Nanoparticles as Potential Carriers for Targeted Delivery of Curcumin into

閱讀:194          發(fā)布時(shí)間:2018-3-29

作者 Wenxing Song†, Munitta Muthana‡, Joy Mukherjee†, Robert J. Falconer†, Catherine A. Biggs†, and Xiubo Zhao*†

 Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, U.K.

 Departments of Infection and Immunity, University of Sheffield, Beech Hill Road, Sheffield S10 2RX, U.K.

 

摘要:Curcumin is a promising anticancer drug but its applications in cancer therapy are limited due to its poor solubility, short half-life, and low bioavailability. In this article, we present a curcumin loaded magnetic silk fibroin core–shell nanoparticle system for sustained release of curcumin into breast cancer cells. Curcumin loaded magnetic silk fibroin core–shell nanoparticles were fabricated by a simple salting-out method using sodium phosphate with magnetic nanoparticles. The size, zeta potential, encapsulation/loading efficiency, and curcumin release rate were controlled and optimized by regulating silk fibroin concentration, pH value of the phosphate solution, and curcumin usage. Curcumin loaded magnetic silk fibroin core–shell nanoparticles showed enhanced cytotoxicity and higher cellular uptake in the human Caucasian breast adenocarcinoma cell line (MDA-MB-231cells) evidenced by MTT and cellular uptake assays. In addition, silk fibroin nanoparticles and magnetic silk fibroin nanoparticles without curcumin loaded were used as controls. The particles prepared using sodium phosphate showed significantly smaller diameter (90–350 nm) compared with those prepared using potassium phosphate, which possess a diameter range of 500–1200 nm. These smaller particles are superior for biomedical applications since such a size range is particularly desired for cell internalization. In addition, the magnetic cores inside the particles provide the possibility of using an external magnet for cancer targeting.

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