Proteolipidic vectors for gene transfer to the lung.

Abstract:

:In order to develop improved synthetic gene transfer vectors, we have synthesized bifunctional peptides composed of a DNA binding peptide (P2) and ligand peptides selected by the phage display technique on tracheal epithelial cells. We have evaluated the capacity of these peptides to enhance the gene transfer efficiency of the cationic lipid DOTAP to the mouse lung. To optimize the in vivo transfection efficiency, we first compared the efficiency of DOTAP to transfect the lung by either intravenous injection or aerosolization. We then tested DNA/Peptide/DOTAP complexes formed at different Peptide/DNA and DOTAP/DNA charge ratios. Under optimal conditions, precompaction of DNA by peptide P2 gave a higher expression in the mouse lung using the luciferase reporter gene than DOTAP/DNA complexes. A further increase of transfection efficiency was obtained with the bifunctional peptide P2-9. Experiments performed with the GFP reporter gene showed expression in the alveolar parenchyme.

authors

Vaysse L,Guillaume C,Burgelin I,Gorry P,Férec C,Arveiler B

doi

10.1006/bbrc.2002.6343

subject

Has Abstract

pub_date

2002-02-08 00:00:00

pages

1489-98

issue

5

eissn

0006-291X

issn

1090-2104

pii

S0006291X02963436

journal_volume

290

pub_type

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