Serveur d'exploration Chloroquine

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Polylysine-based transfection systems utilizing receptor-mediated delivery

Identifieur interne : 002734 ( Main/Exploration ); précédent : 002733; suivant : 002735

Polylysine-based transfection systems utilizing receptor-mediated delivery

Auteurs : Wolfgang Zauner [Autriche] ; Manfred Ogris [Autriche] ; Ernst Wagner [Autriche]

Source :

RBID : ISTEX:B47D4863145440EB80A5D75A2A82AF74417DE37C

English descriptors

Abstract

Abstract: Receptor-mediated gene transfer is a promising gene delivery technique. It employs a DNA-binding polycation, such as polylysine, to compact plasmid DNA to a size that can be taken up by cells (<100–200 nm). To allow internalization by receptor-mediated endocytosis, cell binding ligands, such as asialoglycoproteins or galactose for hepatocytes, anti-CD3 and anti-CD5 for T-cells, and transferrin, have been covalently attached to polylysine. Intracellular barriers for successful gene transfer include release of DNA complexes from endosomes or lysosomes, nuclear import of DNA complexes, and disassembly of the DNA–polylysine particles. Release of particles from internal vesicles has been achieved by the addition of lysosomotropic agents or glycerol to the transfection medium, or by the incorporation of endosomolytic compounds, such as viruses or membrane active peptides. This technique has already been used to transfect certain organs in vivo, including liver and lung.

Url:
DOI: 10.1016/S0169-409X(97)00110-5


Affiliations:


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<term>Airway epithelium</term>
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