Chem. J. Chinese Universities

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Preparation of Controlled-release Microspheres Loading Protein Through Solid-in-oil-in-water Emulsion Method

DU Qing1,2, HU Jun-Li1,2, HAN Ya-Dong1,2, CHEN Xue-Si1*, JING Xia-Bin1   

    1. State Key Laboratory of Polymer Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2007-11-20 Revised:1900-01-01 Online:2008-06-10 Published:2008-06-10
  • Contact: CHEN Xue-Si

Abstract: A novel solid-in-oil-in-water(S/O/W) emulsion method for drug controlled-release system was investigated in this paper. Bovine serum albumin(BSA) was used as the model drug. At first, the nanoparticles containing proteins were obtained by adsorbing BSA from the solution onto the surface of nano-scale SiO2. Then PLGA microspheres loading the solid nanoparticles were fabricated with the solid-in-oil-in-water emulsion method. Compared with the traditional water-in-oil-in-water double emulsion method, this new method has marked advantages, such as improving the percentage of drug in microspheres and the drug entrapment efficiency. More importantly, the activities of protein could be retained better.

Key words: Nano-scale SiO2, Solid-in-oil-in-water(S/O/W) emulsion method, Protein drug, Drug controlled release

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