Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium.
<h4>Background</h4>Gene therapy mediated by synthetic vectors may provide opportunities for new treatments for cystic fibrosis (CF) via aerosolisation. Vectors for CF must transfect the airway epithelium efficiently and not cause inflammation so they are suitable for repeated dosing. The...
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Public Library of Science (PLoS)
2011-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0026768&type=printable |
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| author | Maria D I Manunta Robin J McAnulty Aristides D Tagalakis Stephen E Bottoms Frederick Campbell Helen C Hailes Alethea B Tabor Geoffrey J Laurent Christopher O'Callaghan Stephen L Hart |
| author_facet | Maria D I Manunta Robin J McAnulty Aristides D Tagalakis Stephen E Bottoms Frederick Campbell Helen C Hailes Alethea B Tabor Geoffrey J Laurent Christopher O'Callaghan Stephen L Hart |
| author_sort | Maria D I Manunta |
| collection | DOAJ |
| description | <h4>Background</h4>Gene therapy mediated by synthetic vectors may provide opportunities for new treatments for cystic fibrosis (CF) via aerosolisation. Vectors for CF must transfect the airway epithelium efficiently and not cause inflammation so they are suitable for repeated dosing. The inhaled aerosol should be deposited in the airways since the cystic fibrosis transmembrane conductance regulator gene (CFTR) is expressed predominantly in the epithelium of the submucosal glands and in the surface airway epithelium. The aim of this project was to develop an optimised aerosol delivery approach applicable to treatment of CF lung disease by gene therapy.<h4>Methodology</h4>The vector suspension investigated in this study comprises receptor-targeting peptides, cationic liposomes and plasmid DNA that self-assemble by electrostatic interactions to form a receptor-targeted nanocomplex (RTN) of approximately 150 nm with a cationic surface charge of +50 mV. The aerodynamic properties of aerosolised nanocomplexes produced with three different nebulisers were compared by determining aerosol deposition in the different stages of a Next Generation Pharmaceutical Impactor (NGI). We also investigated the yield of intact plasmid DNA by agarose gel electrophoresis and densitometry, and transfection efficacies in vitro and in vivo.<h4>Results</h4>RTNs nebulised with the AeroEclipse II BAN were the most effective, compared to other nebulisers tested, for gene delivery both in vitro and in vivo. The biophysical properties of the nanocomplexes were unchanged after nebulisation while the deposition of RTNs suggested a range of aerosol aerodynamic sizes between 5.5 µm-1.4 µm cut off (NGI stages 3-6) compatible with deposition in the central and lower airways.<h4>Conclusions</h4>RTNs showed their ability at delivering genes via nebulisation, thus suggesting their potential applications for therapeutic interventions of cystic fibrosis and other respiratory disorders. |
| format | Article |
| id | doaj-art-b4e704dda6444ec3ac8d0e904dd593d2 |
| institution | OA Journals |
| issn | 1932-6203 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-b4e704dda6444ec3ac8d0e904dd593d22025-08-20T02:30:58ZengPublic Library of Science (PLoS)PLoS ONE1932-62032011-01-01610e2676810.1371/journal.pone.0026768Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium.Maria D I ManuntaRobin J McAnultyAristides D TagalakisStephen E BottomsFrederick CampbellHelen C HailesAlethea B TaborGeoffrey J LaurentChristopher O'CallaghanStephen L Hart<h4>Background</h4>Gene therapy mediated by synthetic vectors may provide opportunities for new treatments for cystic fibrosis (CF) via aerosolisation. Vectors for CF must transfect the airway epithelium efficiently and not cause inflammation so they are suitable for repeated dosing. The inhaled aerosol should be deposited in the airways since the cystic fibrosis transmembrane conductance regulator gene (CFTR) is expressed predominantly in the epithelium of the submucosal glands and in the surface airway epithelium. The aim of this project was to develop an optimised aerosol delivery approach applicable to treatment of CF lung disease by gene therapy.<h4>Methodology</h4>The vector suspension investigated in this study comprises receptor-targeting peptides, cationic liposomes and plasmid DNA that self-assemble by electrostatic interactions to form a receptor-targeted nanocomplex (RTN) of approximately 150 nm with a cationic surface charge of +50 mV. The aerodynamic properties of aerosolised nanocomplexes produced with three different nebulisers were compared by determining aerosol deposition in the different stages of a Next Generation Pharmaceutical Impactor (NGI). We also investigated the yield of intact plasmid DNA by agarose gel electrophoresis and densitometry, and transfection efficacies in vitro and in vivo.<h4>Results</h4>RTNs nebulised with the AeroEclipse II BAN were the most effective, compared to other nebulisers tested, for gene delivery both in vitro and in vivo. The biophysical properties of the nanocomplexes were unchanged after nebulisation while the deposition of RTNs suggested a range of aerosol aerodynamic sizes between 5.5 µm-1.4 µm cut off (NGI stages 3-6) compatible with deposition in the central and lower airways.<h4>Conclusions</h4>RTNs showed their ability at delivering genes via nebulisation, thus suggesting their potential applications for therapeutic interventions of cystic fibrosis and other respiratory disorders.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0026768&type=printable |
| spellingShingle | Maria D I Manunta Robin J McAnulty Aristides D Tagalakis Stephen E Bottoms Frederick Campbell Helen C Hailes Alethea B Tabor Geoffrey J Laurent Christopher O'Callaghan Stephen L Hart Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium. PLoS ONE |
| title | Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium. |
| title_full | Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium. |
| title_fullStr | Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium. |
| title_full_unstemmed | Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium. |
| title_short | Nebulisation of receptor-targeted nanocomplexes for gene delivery to the airway epithelium. |
| title_sort | nebulisation of receptor targeted nanocomplexes for gene delivery to the airway epithelium |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0026768&type=printable |
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