Cationic lioposomes with folic acid as targeting ligand for gene delivery

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• 作者：Shao-hui Cui ; De-fu Zhi ; Yi-nan Zhao ; Hui-ying Chen ; Yao Meng ; Chuan-min Zhang ; Shu-biao Zhang ; ^{zsb@dlnu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Cationic liposome ; Folic acid ; Folate receptor ; Gene delivery ; Transfection efficiency
• 刊名：Bioorganic & Medicinal Chemistry Letters
• 出版年：2016
• 出版时间：15 August 2016
• 年：2016
• 卷：26
• 期：16
• 页码：4025-4029
• 全文大小：1143 K

文摘

In our previous Letter, we have carried out the synthesis of a novel DDCTMA cationic lipid which was formulated with DOPE for gene delivery. Herein, we used folic acid (FA) as targeting ligand and cholesterol (Chol) as helper lipid instead of DOPE for enhancing the stability of the liposomes. These liposomes were characterized by dynamic laser scattering (DLS), transmission electron microscopy (TEM) and agarose gel electrophoresis assays of pDNA binding affinity. The lipoplexes were prepared by using different weight ratios of DDCTMA/Chol (1:1, 2:1, 3:1, 4:1) liposomes and different concentrations of FA (50–200 μg/mL) combining with pDNA. The transfection efficiencies of the lipoplexes were evaluated using pGFP-N2 and pGL3 plasmid DNA against NCI-H460 cells in vitro. Among them, the optimum gene transfection efficiency with DDCTMA/Chol (3:1)/FA (100 μg/mL) was obtained. The results showed that FA could improve the gene transfection efficiencies of DDCTMA/Chol cationic liposome. Our results also convincingly demonstrated FA (100 μg/mL)-coated DDCTMA/Chol (3:1) cationic liposome could serve as a promising candidate for the gene delivery.