Intravitreal Administration of Adalimumab-Loaded Poly(Lactic-co-Glycolic Acid) Nanoparticles: Effects on Biodistribution and Pharmacokinetics
Adalimumab, a monoclonal antibody used for treating inflammatory diseases, including eye diseases, faces challenges in biodistribution and targeted delivery. Nanoparticle (NP)-based drug delivery systems have shown promise in enhancing the pharmacokinetic profiles of biologic drugs. This study aims...
| Autores: | , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Santiago de Compostela (USC) |
| Repositorio: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela |
| Idioma: | inglés |
| OAI Identifier: | oai:minerva.usc.gal:10347/42354 |
| Acceso en línea: | https://hdl.handle.net/10347/42354 |
| Access Level: | acceso abierto |
| Palabra clave: | Adalimumab Controlled releases In vivo distribution and pharmacokinetics Nanoparticles Poly(lactic-co-glycolic acid) |
| Sumario: | Adalimumab, a monoclonal antibody used for treating inflammatory diseases, including eye diseases, faces challenges in biodistribution and targeted delivery. Nanoparticle (NP)-based drug delivery systems have shown promise in enhancing the pharmacokinetic profiles of biologic drugs. This study aims to develop, and characterize intravitreal adalimumab-loaded poly(lactic-co-glycolic acid) (PLGA) NPs to improve antibody distribution and therapeutic efficacy. Characterization studies, morphological examination, and quantitative, stability, and physical properties are conducted. In vitro release kinetics are assessed using a dialysis membrane method. In vivo biodistribution is studied in rats after intravitreal administration by Positron Emission Tomography/Computed Tomography imaging. The optimized NPs were spherical (around 300 nm) with a surface charge of about −20 mV. Encapsulation efficiency and drug loading reach values close to 100%. Stability studies showed minimal changes in particle size and drug content. In vitro release showed a biphasic pattern with an initial burst release followed by sustained release. Safety studies indicated no significant cytotoxicity or adverse effects. The adalimumab-loaded PLGA NPs demonstrate favorable physicochemical characteristics, stability, and release profiles. In vivo distribution revealed a change in the antibody's distribution pattern after intravitreal administration via NPs encapsulation. These findings suggest the potential for enhanced therapeutic outcomes and warrant further investigation in disease-specific models to explore the clinical potential of this NP-based delivery system. |
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