
La acción de los agentes de origen biológico como reguladores del sistema inmune ha mostrado ser óptima, sin embargo, algunas limitaciones como la citotoxicidad secundaria han generado en los últimos años la búsqueda de nuevas moléculas que modulen eficazmente esta respuesta sin causar efectos adversos. El presente trabajo de investigación tuvo como objetivo evaluar la actividad linfoproliferativa, citotóxica y hemolítica que ejercen los péptidos antimicrobianos obtenidos del transcriptoma de Atta laevigata. Este estudio experimental, analizó cinco péptidos antimicrobianos sintetizados de secuencias obtenidas previamente del transcriptoma de Atta laevigata. Se realizaron pruebas de actividad linfoproliferativa en línea celular primaria de leucocitos humanos, actividad hemolítica sobre eritrocitos humanos y actividad citotóxica en células Vero ATCC CCL-81. Cinco péptidos obtenidos del transcriptoma de Atta laevigata fueron analizados. Se evaluó la actividad linfoproliferativa donde se evidencia a Atta3 y Atta6 con una significancia de P ≤ 0.01 y P ≤ 0.001, respectivamente. Adicionalmente se determinaron las concentraciones citotóxicas (CC50) y actividad hemolítica de los péptidos seleccionados, encontrándose que el péptido con mayor CC50 fue Atta 6: 0,49 (R2: 0,02) y el péptido con menor CC50 fue Atta 9: 121,8 (R2: 0,02). Con relación a la Actividad hemolítica el péptido Atta 3 no presentó hemólisis en ninguna de las concentraciones analizadas y Atta 9 tuvo un porcentaje de hemólisis de 3,3% a 250 μg/mL, los péptidos restantes presentaron valores entre 0,05% a 0,9% de hemólisis en diferentes concentraciones. De esta manera, estos péptidos han mostrado ser compuestos que no inducen una citotoxicidad representativa, sin embargo, es necesario realizar mayor número de estudios que permitan identificar su mecanismo de acción a través de otros modelos in vitro e in vivo.
The action of agents of biological origin as regulators of the immune system has been shown to be optimal; however, some limitations, such as secondary cytotoxicity, have generated in recent years the search for new molecules that effectively modulate this response without causing adverse effects. The present research work aimed to evaluate the lymphoproliferative, cytotoxic, and hemolytic activity exerted by antimicrobial peptides obtained from the Atta laevigata transcriptome. This experimental study analyzed five antimicrobial peptides synthesized from sequences previously obtained from the Atta laevigata transcriptome. Lymphoproliferative activity tests were performed in the human leukocyte primary cell line, hemolytic activity in human erythrocytes, and cytotoxic activity in Vero ATCC CCL-81 cells. Five peptides obtained from the Atta laevigata transcriptome were analyzed. Lymphoproliferative activity was evaluated where Atta3 and Atta6 are evidenced with a significance of P <0.01 and P <0.001, respectively. Furthermore, cytotoxic concentrations (CC50) and hemolytic activity of the selected peptides were determined, finding that the peptide with the highest CC50 was Atta 6: 0.49 (R2: 0.02) and the peptide with the lowest CC50 was Atta 9: 121. 8 (R2: 0.02). Regarding hemolytic activity, the Atta 3 peptide did not show hemolysis in any of the concentrations analyzed and Atta 9 had a hemolysis percentage of 3.3% at 250 μg / ml, the remaining peptides following values between 0.05% and 0,9% hemolysis at different concentrations. In this way, these peptides have been shown to be compounds that do not induce representative cytotoxicity; however, it is necessary to carry out a greater number of studies than to define their mechanism of action through other in vitro and in vivo models.
Bacteriólogo(a) y Laboratorista Clínico
Medicina y Ciencias de las Salud
Pregrado
Digital
1 ed.
Pruebas de Citotoxicidad, Activación de Linfocitos, Péptidos Catiónicos Antimicrobianos, Hemólisis, Cationic Antimicrobial Peptides, Lymphocyte Activation, Hemolysis, Cytotoxicity Tests
Pruebas de Citotoxicidad, Activación de Linfocitos, Péptidos Catiónicos Antimicrobianos, Hemólisis, Cationic Antimicrobial Peptides, Lymphocyte Activation, Hemolysis, Cytotoxicity Tests
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