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Preparation and characterization of self-assembled nanoparticles based on low-molecular-weight heparin and stearylamine conjugates for controlled delivery of docetaxel

Authors Kim DH, Termsarasab U, Cho HJ, Yoon IS, Lee JY, Moon HT, Kim DD

Received 16 September 2014

Accepted for publication 25 October 2014

Published 8 December 2014 Volume 2014:9(1) Pages 5711—5727

DOI https://doi.org/10.2147/IJN.S74353

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Dr Thomas J Webster

Dong-Hwan Kim,1 Ubonvan Termsarasab,1 Hyun-Jong Cho,2 In-Soo Yoon,3 Jae-Young Lee,1 Hyun Tae Moon,1 Dae-Duk Kim1

1College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea; 2College of Pharmacy, Kangwon National University, Chuncheon, Republic of Korea; 3College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, Republic of Korea

Abstract: Low-molecular-weight heparin (LMWH)–stearylamine (SA) conjugates (LHSA)-based self-assembled nanoparticles were prepared for intravenous delivery of docetaxel (DCT). 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide were used as coupling agents for synthesis of LHSA conjugates. The physicochemical properties, in vitro antitumor efficacy, in vitro cellular uptake efficiency, in vivo antitumor efficacy, and in vivo pharmacokinetics of LHSA nanoparticles were investigated. The LHSA nanoparticles exhibited a spherical shape with a mean diameter of 140–180 nm and a negative surface charge. According to in vitro release and in vivo pharmacokinetic test results, the docetaxel-loaded LHSA5 (LMWH:SA =1:5) nanoparticles exhibited sustained drug release profiles. The blank LHSA nanoparticles demonstrated only an insignificant cytotoxicity in MCF-7 and MDAMB 231 human breast cancer cells; additionally, higher cellular uptake of coumarin 6 (C6) in MCF-7 and MDAMB 231 cells was observed in the LHSA5 nanoparticles group than that in the C6 solution group. The in vivo tumor growth inhibition efficacy of docetaxel-loaded LHSA5 nanoparticles was also significantly higher than the Taxotere®-treated group in the MDAMB 231 tumor-xenografted mouse model. These results indicated that the LHSA5-based nanoparticles could be a promising anticancer drug delivery system.

Keywords: amphiphilic polymer, docetaxel, drug delivery, low-molecular-weight heparin, self-assembled nanoparticle

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