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蟾蜍灵 pluronic 聚醚酰亚胺纳米颗粒的制备、细胞摄取、分布以及对大肠癌的功效

 

Authors Hu Q, Liang B, Sun Y, Guo XL, Bao YJ, Xie DH, Zhou M, Duan YR, Yin PH, Peng ZH

Published Date August 2014 Volume 2014:9(1) Pages 4035—4041

DOI http://dx.doi.org/10.2147/IJN.S64708

Received 24 March 2014, Accepted 12 June 2014, Published 21 August 2014

Abstract: A large number of studies have shown that bufalin can have a significant antitumor effect in a variety of tumors. However, because of toxicity, insolubility in water, fast metabolism, short half-life, and other shortcomings, its application is limited in cancer therapy. In this study, we explored the anti-metastatic role of bufalin-loaded pluronic polyetherimide nanoparticles on HCT116 colon cancer-bearing mice. Nanoparticle size, shape, drug loading, encapsulation efficiency, and in vitro drug release were studied. Also, cellular uptake of nanoparticles, in vivo tumor targeting, and tumor metastasis were studied. The nanoparticles had a particle size of about 60 nm and an encapsulation efficiency of 75.71%, by weight. The in vitro release data showed that free bufalin was released faster than bufalin-loaded pluronic polyetherimide nanoparticles, and almost 80% of free bufalin was released after 32 hours. Nanoparticles had an even size distribution, were stable, and had a slow release and a tumor-targeting effect. Bufalin-loaded pluronic polyetherimide nanoparticles can significantly inhibit the growth and metastasis of colorectal cancer.
Keywords: colon cancer, nanoparticles, tumor target, bufalin







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