Biodegradable core-shell electrospun nanofibers containing bevacizumab to treat age-related macular degeneration

Autor(es)

Lamas de Souza, Sarah Oliveira ^[1] ; Andrade Guerra, Maria Carolina ^[2] ; Dias Heneine, Luiz Guilherme ^[2] ; de Oliveira, Carolina Reis ^[3] ; Cunha Junior, Armando da Silva ^[4] ; Fialho, Silvia Ligorio ^[2] ; Orefice, Rodrigo Lambert ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ Minas Gerais UFMG, Sch Engn, Ave Antonio Carlos 6627, BR-31270901 Belo Horizonte, MG - Brazil

^[2] Ezequiel Dias Fdn, Belo Horizonte, MG - Brazil

^[3] Fed Univ Minas Gerais UFMG, Sch Biol Sci, Belo Horizonte, MG - Brazil

^[4] Fed Univ Minas Gerais UFMG, Sch Pharm, Belo Horizonte, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE; v. 29, n. 11 NOV 2018.
• Citações Web of Science: 3

Resumo

Age-related macular degeneration (AMD) is a degenerative ocular disease that affects the central retina. It is considered the main cause of blindness and loss of vision worldwide. Angiogenic factors are associated with AMD, which has led to the use of antiangiogenic drugs, such as bevacizumab, to treat the disease using frequent intravitreal injections. In the present study, biodegradable core shell nanofibers containing bevacizumab were prepared by the coaxial electrospinning technique. It is thought that the shell could control the release of the drug, while the core would protect and store the drug. Poly(caprolactone) (PCL) and gelatin were used to form the shell of the nanofibers, while poly(vinyl alcohol) (PVA) and bevacizumab comprised the core. The nanofibers were characterized using microscopy techniques, thermal analysis, and FTIR. The results showed that core-shell nanofibers were produced as designed. Bevacizumab activity was evaluated using a chicken embryo chorioallantoic membrane (CAM) assay. An enzyme-linked immunosorbent assay was used to quantify the amount of the drug released from the different nanofibers in vitro. The toxicity of the nanofibers was evaluated in human retinal pigment epithelial (ARPE) cells. The CAM results demonstrated that bevacizumab maintained its antiangiogenic activity when incorporated into the nanofibers. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) tests revealed that the nanofibers showed no cellular toxicity, even in the presence of bevacizumab. The core-shell structure of the nanofibers reduced the release rate of bevacizumab compared with PVA nanofibers. The bevacizumab-loaded biodegradable nanofibers presented interesting properties that would potentially constitute an alternative therapy to intravitreal injections to treat AMD. {[}GRAPHICS] . (AU)

• Processo FAPESP: 14/50928-2 - INCT 2014: Nanotecnologia Farmacêutica: uma abordagem transdisciplinar
• Beneficiário: Maria Vitória Lopes Badra Bentley
• Modalidade de apoio: Auxílio à Pesquisa - Temático