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논문 기본 정보

자료유형
학술저널
저자정보
Park, Yu-Mi (College of Pharmacy and Research Institute of Drug Development, and Nanotechnology Research Center, Chonnam National University) Shin, Boo-Ahn (College of Medicine, Chonnam National University) Oh, In-Joon (College of Pharmacy and Research Institute of Drug Development, and Nanotechnology Research Center, Chonnam National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제31권 제1호
발행연도
2008.1
수록면
96 - 102 (7page)

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Non-viral vectors such as liposomes, polycations, and nanoparticles have been used as gene delivery systems. In this study, we prepared and characterized biodegradable poly(L-lactic acid) (PLA)/polyethylenimine (PEI) nanoparticles as gene carriers. $pCMV/{\beta}-gal$ and pEGFP-C1 were utilized as model plasmid DNAs (pDNA). Nanoparticles were prepared using a double emulsion-solvent evaporation technique, and their pDNA binding capacity was assessed by agarose gel electrophoresis. Transfection was studied in HEK 293 and HeLa cell lines, and the transfection efficiencies were determined by ${\beta}-galactosidase$ assay or flow cytometry. Three kinds of PLA/PEI systems were studied by varying the molecular weight of PEI. The PLA/PEI 25K system had a higher transfection efficiency than the PLA/PEI 0.8K or PLA/PEI 750K systems. The transfection efficiency was found to be dependent on the ratio of PLA/PEI nanoparticles to pDNA with an optimum ratio of 60:1 (w/w). The cytotoxicity was dependent on the quantity of PLA/PEI nanoparticles used, but it was comparable to that of commercial $Lipofectin^{TM}$. These results demonstrate the potential of PLA/PEI nanoparticles as gene carriers.

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