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Anti-tumor effects of brucine immuno-nanoparticles on hepatocellular carcinoma

Authors Qin JM, Yin PH, Li Q, Sa ZQ, Sheng X, Yang L, Huang T, Zhang M, Gao KP, Chen QH, Ma JW, Shen HB

Received 10 October 2011

Accepted for publication 9 December 2011

Published 23 January 2012 Volume 2012:7 Pages 369—379

DOI https://doi.org/10.2147/IJN.S27226

Review by Single-blind

Peer reviewer comments 2

Jian-Min Qin1, Pei-Hao Yin1, Qi Li1, Zhong-Qiu Sa1, Xia Sheng1, Lin Yang1, Tao Huang1, Min Zhang1, Ke-Pan Gao2, Qing-Hua Chen2, Jing-Wei Ma3, He-Bai Shen3
1Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, 2National Pharmaceutical Engineering Research Center; Shanghai Institute of Pharmaceutical Industry, 3Department of Physical Chemistry, Shanghai Normal University, Shanghai, People's Republic of China

Background: Hepatocellular carcinoma is difficult to diagnose early, and most patients are already in the late stages of the disease when they are admitted to hospital. The total 5-year survival rate is less than 5%. Recent studies have showed that brucine has a good anti-tumor effect, but high toxicity, poor water solubility, short half-life, narrow therapeutic window, and a toxic dose that is close to the therapeutic dose, which all limit its clinical application. This study evaluated the effects of brucine immuno-nanoparticles (BIN) on hepatocellular carcinoma.
Materials and methods: Anionic polymerization, chemical modification technology, and phacoemulsification technology were used to prepare a carboxylated polyethylene glycol-polylactic acid copolymer carrier material. Chemical coupling technology was utilized to develop anti-human AFP McAb-polyethylene glycol-polylactic acid copolymer BIN. The size, shape, zeta potential, drug loading, encapsulation efficiency, and release of these immune-nanoparticles were studied in vitro. The targeting, and growth, invasion, and metastasis inhibitory effects of this treatment on liver cancer SMMC-7721 cells were tested.
Results: BIN were of uniform size with an average particle size of 249 ± 77 nm and zeta potential of -18.7 ± 4.19 mV. The encapsulation efficiency was 76.0% ± 2.3% and the drug load was 5.6% ± 0.2%. Complete uptake and even distribution around the liver cancer cell membrane were observed.
Conclusion: BIN had even size distribution, was stable, and had a slow-releasing effect. BIN targeted the cell membrane of the liver cancer cell SMMC-7721 and significantly inhibited the growth, adhesion, invasion, and metastasis of SMMC-7721 cells. As a novel drug carrier system, BIN are a potentially promising targeting treatment for liver cancer.

Keywords: cancer targeting, hepatocellular carcinoma, nanoparticles, targeted drug delivery, anti-tumor effect

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