Intra-articular nonviral gene therapy in mucopolysaccharidosis I mice

Publication date: 5 September 2018 Source:International Journal of Pharmaceutics, Volume 548, Issue 1 Author(s): Juliana Bidone, Roselena Silvestri Schuh, Mirian Farinon, Édina Poletto, Gabriela Pasqualim, Patrícia Gnieslaw de Oliveira, Michelle Fraga, Ricardo Machado Xavier, Guilherme Baldo, Helder Ferreira Teixeira, Ursula Matte Mucopolysaccharidosis type I (MPS I) is caused by the lysosomal accumulation of glycosaminoglycans (GAGs) due to the deficiency of the enzyme alpha-L-iduronidase (IDUA). Currently available treatments may improve several clinical manifestations, but they have limited effects on joint disease, resulting in persistent orthopedic complications and impaired mobility. Thus, this study aimed to perform an intra-articular administration of cationic nanoemulsions complexed with the plasmid encoding for the IDUA protein (pIDUA) targeting MPS I gene therapy for the synovial joints. Formulations composed of DOPE, DOTAP, MCT (NE), and DSPE-PEG (NE-PEG) were prepared by high-pressure homogenization, and the pIDUA plasmid was associated by adsorption onto the surface of nanoemulsions (pIDUA/NE or pIDUA/NE-PEG). The physicochemical characterization showed that the presence of DSPE-PEG in pIDUA/NE-PEG formulations led to small and highly stable droplets even when incubated with simulated synovial fluid (SSF), when compared to the non-pegylated complexes (pIDUA/NE). Uptake by fibroblast-like synoviocytes (FLS) was demonstrated, and high cell viability...
Source: International Journal of Pharmaceutics - Category: Drugs & Pharmacology Source Type: research