Synthesis and Optimization of Cholesterol-Based Diquaternary Ammonium Gemini Surfactant (Chol-GS) as a New Gene Delivery Vector

Title
Synthesis and Optimization of Cholesterol-Based Diquaternary Ammonium Gemini Surfactant (Chol-GS) as a New Gene Delivery Vector
Author(s)
도경오김병길배윤위서영배[서영배]
Keywords
CATIONIC LIPIDS; IN-VITRO; INTRACELLULAR DELIVERY; THERAPY; EFFICIENT; PHOSPHATIDYLETHANOLAMINE; EFFICACIES; MECHANISM; LIPOSOME; AGENTS
Issue Date
201101
Publisher
KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
Citation
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, v.21, no.1, pp.93 - 99
Abstract
Amongst a number of potential nonviral vectors, cationic liposomes have been actively researched, with both gemini surfactants and bola amphiphiles reported as being in possession of good structures in terms of cell viability and in vitro transfection. In this study, a cholesterol-based diquaternary ammonium gemini surfactant (Chol-GS) was synthesized and assessed as a novel nonviral gene vector. Chol-GS was synthesized from cholesterol by way of four reaction steps. The optimal efficiency was found to be at a weight ratio of 1:4 of lipid:DOPE (1,2-dioleoyl-L-alpha-glycero-3-phosphatidylethanolamine), and at a ratio of between 10:1 similar to 15:1 of liposome:DNA. The transfection efficiency was compared with commercial liposomes and with Lipofectamine, 1,2-dimyristyloxypropyl-3-dimethylhydroxyethylammonium bromide (DMRIE-C), and N-[1-(2,3-dioleoyloxy)propyl]-N,N,N-trimethylammonium chloride (DOTAP). The results indicate that the efficiency of Chol-GS is greater than that of all the tested commercial liposomes in COS7 and Huh7 cells, and higher than DOTAP and Lipofectamine in A549 cells. Confirmation of these findings was observed through the use of green fluorescent protein expression. Chol-GS exhibited a moderate level of cytotoxicity, at optimum concentrations for efficient transfection, indicating cell viability. Hence, the newly synthesized Chol-GS liposome has the potential of being an excellent nonviral vector for gene delivery.
URI
http://hdl.handle.net/YU.REPOSITORY/25746http://dx.doi.org/10.4014/jmb.1008.08012
ISSN
1017-7825
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의과대학 > 생리학교실 > Articles
의과대학 > 영상의학과학교실 > Articles
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