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Diseño racional y validación in vivo de los inhibidores de la cápside para el enterovirus D68
Kan Li1, Michael J Rudy2, Thomas Klose3
1Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ, USA.
Nature communications
|February 10, 2026
Resumen
Los nuevos medicamentos antivirales, Jun11787 y Jun11695, son prometedores en el tratamiento de las infecciones por el enterovirus D68 (EV-D68). Estos compuestos redujeron efectivamente la carga viral y previnieron la parálisis en ratones, ofreciendo esperanza para un tratamiento futuro.
Área de la Ciencia:
- Virología Virología.
- Descubrimiento de Drogas Descubrimiento de Drogas
- Biología Estructural Biología estructural.
Sus antecedentes:
- El enterovirus D68 (EV-D68) es un patógeno respiratorio significativo.
- La infección por EV-D68 puede provocar complicaciones neurológicas graves, incluida la mielitis flácida aguda (MFA) y la muerte en niños.
- Actualmente, no existen vacunas o terapias antivirales específicas para el EV-D68.
Objetivo del estudio:
- Diseñar y desarrollar nuevos agentes antivirales dirigidos a EV-D68.8.
- Evaluar la eficacia in vitro e in vivo de los inhibidores diseñados basados en la estructura contra el EV-D68.8.
- Investigar el potencial terapéutico de estos inhibidores en un modelo de ratón de mielitis paralítica asociada con EV-D68.
Principales métodos:
- Diseño de fármacos basado en la estructura utilizando microscopía crioectrónica (Cryo-EM).
- Pruebas antivirales in vitro para determinar la potencia contra varias cepas de enterovirus.
- Estudios in vivo en un modelo de ratón neonatal para evaluar la eficacia terapéutica, incluida la reducción del título viral, la prevención de la parálisis y el aumento de peso.
Principales resultados:
- Dos nuevos compuestos, Jun11787 y Jun11695, fueron identificados como potentes inhibidores de EV-D68.
- Estos compuestos se unen a la región del cañón hidrofóbico de la proteína cápside VP1.
- Jun11787 y Jun11695 demostraron potencia nanomolar contra múltiples cepas EV-D68 y potencia micromolar contra EV-A71 y CVB3.
- In vivo, el tratamiento con Jun11787 y Jun11695 redujo significativamente la carga viral de la médula espinal, evitó la parálisis y mejoró el aumento de peso en ratones infectados, incluso cuando se administró días después de la infección.
Conclusiones:
- Jun11787 y Jun11695 son agentes antivirales efectivos contra el EV-D68 con potencial de amplio espectro.
- Estos compuestos representan perspectivas terapéuticas prometedoras para el tratamiento de las infecciones por EV-D68 y las complicaciones neurológicas asociadas.
- El diseño basado en la estructura es una estrategia viable para desarrollar nuevas terapias antivirales contra patógenos virales desafiantes.
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