TY - JOUR
T1 - Synthesis and optimization of cholesterol-based diquaternary ammonium gemini surfactant (Chol-GS) as a new gene delivery vector
AU - Kim, Bieong Kil
AU - Doh, Kyung Oh
AU - Bae, Yun Ui
AU - Seu, Young Bae
PY - 2011/1
Y1 - 2011/1
N2 - 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-α- glycero-3-phosphatidylethanolamine), and at a ratio of between 10:1~15:1 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.
AB - 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-α- glycero-3-phosphatidylethanolamine), and at a ratio of between 10:1~15:1 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.
KW - Cationic liposome
KW - Cholesterol
KW - Gemini surfactant
KW - Gene therapy
KW - Transfection
UR - http://www.scopus.com/inward/record.url?scp=79251623411&partnerID=8YFLogxK
U2 - 10.4014/jmb.1008.08012
DO - 10.4014/jmb.1008.08012
M3 - Article
C2 - 21301198
AN - SCOPUS:79251623411
SN - 1017-7825
VL - 21
SP - 93
EP - 99
JO - Journal of Microbiology and Biotechnology
JF - Journal of Microbiology and Biotechnology
IS - 1
ER -