Gluconoylated and Glycosylated Polylysines As Vectors for Gene Transfer into Cystic Fibrosis Airway Epithelial Cells
Identifieur interne : 000100 ( Hal/Curation ); précédent : 000099; suivant : 000101Gluconoylated and Glycosylated Polylysines As Vectors for Gene Transfer into Cystic Fibrosis Airway Epithelial Cells
Auteurs : Wouter Kollen [États-Unis] ; Patrick Midoux [France] ; Patrick Erbacher ; Alex Yip ; Annie Claude Roche [France] ; Michel Monsigny [France] ; Mary Catherine Glick ; Thomas ScanlinSource :
- Human Gene Therapy [ 1043-0342 ] ; 1996-08-20.
Abstract
To provide an alternative to viral vectors for the transfer of genes into airway epithelial cells in cystic fibrosis (CF), a novel set of substituted polylysines were employed. Polylysine was partially neutralized by blocking a number of positively charged residues with gluconoyl groups. In addition, polylysine was substituted with sugar residues on a specified number of amino groups. Using the gluconoylated polylysine as vector, the pCMVLuc plasmid gave high expression of the reporter gene luciferase in immortalized CF/T43 cells. The luciferase activity was 75-fold greater in the presence of 100 microM chloroquine. Luciferase gene expression persisted at high levels for up to at least 120 hr following transfection. Glycosylated polylysines/pCMVLuc complexes were compared to the gluconoylated polylysine/pCMVLuc complex and beta-Gal-, alpha-Glc-, and Lac-substituted polylysines gave 320%, 300%, and 290%, respectively, higher expression of the reporter gene luciferase. Luciferase expression ranged from 35 to 2 ng of luciferase per milligram of cell protein in the order: beta-Gal = alpha-Glc = Lac > alpha-Gal = Rha = Man > beta-GalNAc > alpha-GalNAc = alpha-Fuc, suggesting that the transfection efficiency is sugar dependent. Most importantly, in primary cultures of both CF and non-CF airway epithelial cells grown from tracheal tissue explants, lactosylated polylysine gave uniformly high expression of luciferase. The glycosylated polylysines provide an attractive nonviral approach for the transfer of genes into airway epithelial cells.
Url:
DOI: 10.1089/hum.1996.7.13-1577
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<front><div type="abstract" xml:lang="en"> <p>To provide an alternative to viral vectors for the transfer of genes into airway epithelial cells in cystic fibrosis (CF), a novel set of substituted polylysines were employed. Polylysine was partially neutralized by blocking a number of positively charged residues with gluconoyl groups. In addition, polylysine was substituted with sugar residues on a specified number of amino groups. Using the gluconoylated polylysine as vector, the pCMVLuc plasmid gave high expression of the reporter gene luciferase in immortalized CF/T43 cells. The luciferase activity was 75-fold greater in the presence of 100 microM chloroquine. Luciferase gene expression persisted at high levels for up to at least 120 hr following transfection. Glycosylated polylysines/pCMVLuc complexes were compared to the gluconoylated polylysine/pCMVLuc complex and beta-Gal-, alpha-Glc-, and Lac-substituted polylysines gave 320%, 300%, and 290%, respectively, higher expression of the reporter gene luciferase. Luciferase expression ranged from 35 to 2 ng of luciferase per milligram of cell protein in the order: beta-Gal = alpha-Glc = Lac > alpha-Gal = Rha = Man > beta-GalNAc > alpha-GalNAc = alpha-Fuc, suggesting that the transfection efficiency is sugar dependent. Most importantly, in primary cultures of both CF and non-CF airway epithelial cells grown from tracheal tissue explants, lactosylated polylysine gave uniformly high expression of luciferase. The glycosylated polylysines provide an attractive nonviral approach for the transfer of genes into airway epithelial cells.</p>
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<abstract xml:lang="en"> <p>To provide an alternative to viral vectors for the transfer of genes into airway epithelial cells in cystic fibrosis (CF), a novel set of substituted polylysines were employed. Polylysine was partially neutralized by blocking a number of positively charged residues with gluconoyl groups. In addition, polylysine was substituted with sugar residues on a specified number of amino groups. Using the gluconoylated polylysine as vector, the pCMVLuc plasmid gave high expression of the reporter gene luciferase in immortalized CF/T43 cells. The luciferase activity was 75-fold greater in the presence of 100 microM chloroquine. Luciferase gene expression persisted at high levels for up to at least 120 hr following transfection. Glycosylated polylysines/pCMVLuc complexes were compared to the gluconoylated polylysine/pCMVLuc complex and beta-Gal-, alpha-Glc-, and Lac-substituted polylysines gave 320%, 300%, and 290%, respectively, higher expression of the reporter gene luciferase. Luciferase expression ranged from 35 to 2 ng of luciferase per milligram of cell protein in the order: beta-Gal = alpha-Glc = Lac > alpha-Gal = Rha = Man > beta-GalNAc > alpha-GalNAc = alpha-Fuc, suggesting that the transfection efficiency is sugar dependent. Most importantly, in primary cultures of both CF and non-CF airway epithelial cells grown from tracheal tissue explants, lactosylated polylysine gave uniformly high expression of luciferase. The glycosylated polylysines provide an attractive nonviral approach for the transfer of genes into airway epithelial cells.</p>
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