Gene delivery by negatively charged ternary complexes of DNA, cationic liposomes and transferrin or fusigenic peptides
نویسندگان
چکیده
منابع مشابه
Successful transfection of lymphocytes by ternary lipoplexes.
Transgene expression in lymphoid cells may be useful for modulating immune responses in, and gene therapy of, cancer and AIDS. Although cationic liposome-DNA complexes (lipoplexes) present advantages over viral vectors, they have low transfection efficiency, unfavorable features for intravenous administration, and lack of target cell specificity. The use of a targeting ligand (transferrin), or ...
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BACKGROUND The objective of this research was to design an effective gene delivery system composed of cationic solid lipid nanoparticles (SLNs), protamine, and Deoxyribonucleic acid DNA. METHODS Cationic SLNs were prepared using an aqueous solvent diffusion method with octadecylamine as the cationic lipid material. First, protamine was combined with DNA to form binary protamine/DNA nanopartic...
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Ternary nanocomplexes, composed of bifunctional cationic peptides, lipids and siRNA, as delivery vehicles for siRNA have been investigated. The study is the first to determine the optimal sequence and architecture of the bifunctional cationic peptide used for siRNA packaging and delivery using lipopolyplexes. Specifically three series of cationic peptides of differing sequence, degrees of branc...
متن کاملStearylamine-bearing cationic liposomes kill Leishmania parasites through surface exposed negatively charged phosphatidylserine.
OBJECTIVES Lipid-associated formulations of antileishmanial agents have proved to be more effective therapies with reduced toxicities. Previous studies from our group and others revealed that liposomes bearing phosphatidylcholine and stearylamine (SA) themselves kill Leishmania and other protozoan parasites in vitro and in vivo, without causing any adverse effect on host. In the present study, ...
متن کاملInteractions of Cationic Peptides and Ions with Negatively Charged Lipid Bilayers
In this thesis we study the interactions of ions and cationic peptides with a negatively charged lipid bilayer in an ionic solution where the electrostatic interactions are screened. We first examine the problem of charge renormalization and inversion of a highly charged bilayer with low dielectric constant. To be specific, we consider an asymmetrically charged lipid bilayer, in which only one ...
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ژورنال
عنوان ژورنال: Gene Therapy
سال: 1998
ISSN: 0969-7128,1476-5462
DOI: 10.1038/sj.gt.3300674