Journal article
Tunable Properties of Poly-DL-Lactide-Monomethoxypolyethylene Glycol Porous Microparticles for Sustained Release of Polyethylenimine-DNA Polyplexes
AAPS PharmSciTech, Vol.20(1), pp.1-9
01/2019
DOI: 10.1208/s12249-018-1215-9
PMID: 30604270
Abstract
Direct pulmonary delivery is a promising step in developing effective gene therapies for respiratory disease. Gene therapies can be used to treat the root cause of diseases, rather than just the symptoms. However, developing effective therapies that do not cause toxicity and that successfully reach the target site at therapeutic levels is challenging. We have developed a polymer-DNA complex utilizing polyethylene imine (PEI) and DNA, which was then encapsulated into poly(lactic acid)-co-monomethoxy poly(ethylene glycol) (PLA-mPEG) microparticles via double emulsion, solvent evaporation. Then, the resultant particle size, porosity, and encapsulation efficiency were measured as a function of altering preparation parameters. Microsphere formation was confirmed from scanning electron micrographs and the aerodynamic particle diameter was measured using an aerodynamic particle sizer. Several formulations produced particles with aerodynamic diameters in the 0–5 μm range despite having larger particle diameters which is indicative of porous particles. Furthermore, these aerodynamic diameters correspond to high deposition within the airways when inhaled and the measured DNA content indicated high encapsulation efficiency. Thus, this formulation provides promise for developing inhalable gene therapies.
Details
- Title: Subtitle
- Tunable Properties of Poly-DL-Lactide-Monomethoxypolyethylene Glycol Porous Microparticles for Sustained Release of Polyethylenimine-DNA Polyplexes
- Creators
- Treniece TerryBrittany GivensVictor RodgersAliasger Salem
- Resource Type
- Journal article
- Publication Details
- AAPS PharmSciTech, Vol.20(1), pp.1-9
- DOI
- 10.1208/s12249-018-1215-9
- PMID
- 30604270
- NLM abbreviation
- AAPS PharmSciTech
- ISSN
- 1530-9932
- eISSN
- 1530-9932
- Publisher
- Springer International Publishing; Cham
- Language
- English
- Date published
- 01/2019
- Academic Unit
- Roy J. Carver Department of Biomedical Engineering; Pharmaceutical Sciences and Experimental Therapeutics; Craniofacial Anomalies Research Center; Dental Research; Chemical and Biochemical Engineering
- Record Identifier
- 9983985835902771
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