Poly(ethylene glycol)-polyester block copolymers have widely been used in biomedical and pharmaceutical fields because of their excellent biocompatibility, biodegradability, and amphiphilicity arising from phase-separated microstructures between a hydrophilic PEG block and a hydrophobic polyester block. The aims of this research are to prepare gemcitabine-loaded microparticles using methoxy poly(ethylene glycol)-poly(L-lactide) (mPEG-PLLA) diblock copolymer and to evaluate their release characteristics. We synthesized mPEG-PLLA diblock copolymers of different block lengths, and their molecular compositions and molecular weight were analyzed by 1H-NMR and GPC. W/O/W double emulsion solvent evaporation method was used to prepare gemcitabine-loaded mPEG-PLLA microparticles. The effects of various preparative parameters such as pH, salt concentration of external water phase, solvent composition of organic phase and ratio of internal/external water phase on the morphology and the encapsulation efficiency of the microparticles were investigated. The in vitro release profiles of gemcitabine from microparticles were also determined using HPLC.
키워드
mPEG-PLLAGemcitabineEmusion
저자
Ji-Eun LEE [ Dept. of Chemical & Biochemical Engineering, The University of Suwon, Hwaseong. ]
In-Il JUNG [ Dept. of Chemical Engineering, Yonsei University ]
Gio-Bin LIM [ Dept. of Chemical & Biochemical Engineering, The University of Suwon, Hwaseong. ]
Jong-Hoon RYU [ Dept. of Chemical & Biochemical Engineering, The University of Suwon, Hwaseong. ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
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3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
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