Desarrollo de biosensor electroquímico: análisis voltamperométrico de linfocitos e indicación de activación del sistema del complemento

Autores/as

DOI:

https://doi.org/10.33448/rsd-v11i7.30198

Palabras clave:

Linfocitos; Biosensor; Células de sangre.

Resumen

Este trabajo reporta el desarrollo de un biosensor electroquímico luego de la inmovilización de los linfocitos para detectar la reacción entre anticuerpos y antígenos HLA específicos presentes en las muestras de suero. Se utilizó un electrodo de oro casero limpio con características policristalinas voltamperométricas. Los linfocitos fueron inmovilizados y probados con suero humano positivo y negativo y complementos en el electrodo de oro. Los experimentos se realizaron en una celda con tres electrodos: de trabajo - oro, de referencia - Ag/AgCl/sat. KCl y auxiliar - platino. Los análisis voltamperométricos cíclicos de los linfocitos inmovilizados sobre la superficie de oro presentaron una corriente anódica igual a 1,78 μA a c.a. 0,50 V frente a Ag/AgCl/sat. KCl. Las respuestas electroquímicas del suero (positivo y negativo) y del complemento no muestran signos de oxidación o reducción en el rango de potencial utilizado. Los electrodos con células y suero positivo mostraron la señal de corriente amplificada en el potencial de oxidación de las células. El electrodo fue desarrollado para verificar la reacción del anticuerpo del antígeno, presentar muestras de células de linfocitos y suero humano. El electrodo fue cualitativamente eficiente en comparación con los métodos de análisis de citometría de flujo y citotoxicidad dependiente del complemento, pudiendo ser utilizado con ventajas operativas y económicas.

Biografía del autor/a

Ruan Sousa Bastos, Federal Institute of Education, Science and Technology of Maranhão; Research Group in Medicinal Chemistry and Biotechnology-QUIMEBIO

Graduado em Ciências Naturais/Química pela Universidade Federal do Maranhão - UFMA, Campus de Grajaú. Mestrando em Química Medicinal e Modelagem Molecular - UFPA. Participou do Programa Institucional de Bolsa de iniciação a Docência - PIBID e do Programa de Residência Pedagógica. Membro do Grupo de Pesquisa em Química Medicinal e Biotecnologia - QUIMEBIO e membro do Grupo de Pesquisa em Ciências Naturais e Biotecnologia - CIENATEC. Atua nas linhas de Biotecnologia e Química Quântica Computacional. E-mail: sonruanquimica@gmail.com

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Publicado

05/06/2022

Cómo citar

OLIVEIRA, T. P.; MELO, S. M.; MONTE, S. J. H. do; BASTOS, R. S.; PASSOS, I. N. G.; SILVA, A. S.; SANTOS JÚNIOR, J. R. dos. Desarrollo de biosensor electroquímico: análisis voltamperométrico de linfocitos e indicación de activación del sistema del complemento. Research, Society and Development, [S. l.], v. 11, n. 7, p. e59611730198, 2022. DOI: 10.33448/rsd-v11i7.30198. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/30198. Acesso em: 23 nov. 2024.

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Sección

Ciencias Exactas y de la Tierra