Efecto Protector de Nanopartículas Poliméricas con Indometacina contra la Citotoxicidad Inducida por Estrés Oxidativo en Modelo de Células de Adenocarcinoma de Mama Humano
DOI:
https://doi.org/10.32635/2176-9745.RBC.2022v68n4.2545Palabras clave:
indometacina/farmacología, antioxidantes, nanocápsulas, neoplasiasResumen
Introducción: Se están utilizando antiinflamatorios para tratamiento de cáncer debido a su entorno inflamado. Objetivo: Investigar el potencial antioxidante de la indometacina y su genotoxicidad, libre o acarreada en nanocápsulas poliméricas utilizando como modelo in vitro células MCF-7 (cáncer de mama humano). Método: Desarrollo de nanocápsulas de poli epsilon-caprolactona (PCL) por método de deposición interfacial, caracterizada por determinación de pH por potenciómetro; diámetro medio e índice de polidispersión por esparcimiento dinámico de luz; potencial zeta por movilidad electroforética; eficiencia de encapsulación por cromatografía líquida de alta eficiencia; formación de efecto corona; método de 2’,7’-diclorofluoresceína diacetato (DCFH-DA) por ensayo espectrofluorímetro; determinación de óxido nítrico (NO) por espectrometría y ensayo de genotoxicidad por método de clivaje del ADN plasmídico. Resultados: Los resultados mostraron ligero pH ácido (4,78 ± 0,10), tamaños alrededor de 200 nm y PDI<0,2 con potencial zeta alrededor de -20 mV y eficiencia de encapsulación de 99% (1 mg mL-1), presentando perfil de formación de corona dosis-dependiente en 24h de incubación. Conclusión: El ensayo DCFDA mostró que no hay producción de especies reactivas de oxígeno (ROS) mientras que la determinación de NO mostró que Ind-OH-NC de 26,7 a 100 μM aumentó las especies reactivas de nitrógeno (RNS), demostrando potencial antioxidante contra MCF-7. Ninguna muestra en las concentraciones evaluadas indujo clivaje del ADN, siendo considerado un tratamiento seguro.
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