Resumen
Introducción: El desarrollo de una vacuna contra el virus del herpes simple tipo 2 (HSV-2), el cual causa una infección de transmisión sexual de por vida, sería un gran paso para mejorar la salud sexual y reproductiva mundial. Objetivos: Estudiar las respuestas inmunes de mucosa y sistémica inducidas por una vacuna experimental, consistente en partículas semejantes a bacterias (BLP) derivadas de lactobacilos, que conservan su matriz de peptidoglicano y exponen el antígeno gD del HSV-2 en su superficie gracias a la fusión con dominios LysM. Materiales y métodos: Ratones BALB/c de seis semanas de edad fueron inmunizados por vía nasal con el complejo His-Acglu-gD-BLP027 los días 0, 14 y 28. Como control, se administró His-Acglu-gD por via intranasal o His-gD con adyuvante completo de Freund por vía peritoneal. Se evaluaron los niveles de inmunoglobulinas específicas en suero y en lavado broncoalveolar (BAL), así como la producción de citoquinas por parte de los esplenocitos, en respuesta a la reestimulación antigénica. Resultados: La vacuna experimental indujo mayores niveles de IgA en BAL en comparación con los ratones inmunizados con el adyuvante de Freund. Conclusiones: Este nuevo sistema de presentación de antígenos podría ser una herramienta útil para el desarrollo de vacunas mucosas que estimulen la inmunidad local y a distancia.
Citas
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