Efeito Protetor de Nanopartículas Poliméricas com Indometacina contra Citotoxicidade Induzida por Estresse Oxidativo em Modelo Celular de Adenocarcinoma de Mama Humano

Autores

DOI:

https://doi.org/10.32635/2176-9745.RBC.2022v68n4.2545

Palavras-chave:

indometacina/farmacologia, antioxidantes, nanocápsulas, neoplasias

Resumo

Introdução: Anti-inflamatórios estão sendo empregados para tratamento de câncer por causa do seu ambiente inflamado. Objetivo: Investigar o potencial antioxidante da indometacina e sua genotoxicidade, livre ou carreada em nanocápsulas poliméricas, usando como modelo in vitro células MCF-7 (câncer de mama humano). Método: Desenvolvimento de nanocápsulas de poliepsilon-caprolactona (PCL) por método de deposição interfacial, caracterizada por determinação de pH por potenciômetro; diâmetro médio e índice de polidispersão por espalhamento dinâmico de luz; potencial zeta por mobilidade eletroforética; eficiência de encapsulação por cromatografia líquida de alta eficiência; formação de efeito corona; método de 2’,7’-diclorofluoresceína diacetato (DCFH-DA) por ensaio espectrofluorimétrico; determinação de óxido nítrico (NO) por espectrometria e ensaio de genotoxicidade por método de clivagem do DNA plasmidial. Resultados: Os resultados mostraram leve pH ácido (4,78 ± 0,10), tamanhos em torno de 200 nm e PDI<0,2 com potencial zeta em torno de -20 mV e eficiência de encapsulação de 99% (1 mg mL-1), apresentando perfil de formação de corona dose-dependente em 24 horas de incubação. Conclusão: O ensaio DCFH-DA mostrou que não há produção de espécies reativas de oxigênio (ROS), enquanto a determinação de NO mostrou que Ind-OH-NC de 26,7 a 100 μM aumentou as espécies reativas de nitrogênio (RNS), demonstrando potencial antioxidante contra MCF-7. Nenhuma amostra nas concentrações avaliadas induziu clivagem do DNA, sendo considerado um tratamento seguro.

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Publicado

2022-09-13

Como Citar

1.
Franco C, Viana AR, Ourique AF, Vizzotto BS, Krause LMF. Efeito Protetor de Nanopartículas Poliméricas com Indometacina contra Citotoxicidade Induzida por Estresse Oxidativo em Modelo Celular de Adenocarcinoma de Mama Humano. Rev. Bras. Cancerol. [Internet]. 13º de setembro de 2022 [citado 6º de outubro de 2022];68(4):e-012545. Disponível em: https://rbc.inca.gov.br/index.php/revista/article/view/2545

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