Explorar el uso de aminoglucósidos con cierre conformacional como una nueva estrategia para superar la resistencia bacteriana
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Immobilization of Multi-biocatalysts in Alginate Beads for Cofactor Regeneration and Improved Reusability
Published on: April 22, 2016
Agatha Bastida1, Ana Hidalgo, Jose Luis Chiara
1Instituto de Química Orgánica General (CSIC), 28006 Madrid, Spain.
Journal of the American Chemical Society
|January 5, 2006
Resumen
El diseño de antibióticos aminoglucósidos con cierre conformacional puede superar la resistencia bacteriana. Al estabilizar el fármaco.
Área de la Ciencia:
- Química Medicinal La Química Medicinal es un campo de estudio de la química medicinal.
- Biología Molecular Biología Molecular
- Descubrimiento de Drogas Descubrimiento de Drogas
Sus antecedentes:
- La resistencia bacteriana a los antibióticos, en particular a los aminoglucósidos, es una creciente amenaza para la salud mundial.
- La modificación enzimática es un mecanismo primario de la resistencia a los aminoglucósidos.
- Existen diferencias conformacionales significativas entre la unión del aminoglucósido al ARN ribosomal y la inactivación por las enzimas de resistencia.
Objetivo del estudio:
- Investigar una estrategia basada en la estructura para superar la resistencia a los aminoglucósidos.
- Para sintetizar derivados de aminoglucósidos conformacionalmente bloqueados que conservan la actividad antibiótica.
- Para evaluar el impacto de la preorganización conformacional en la unión al ARN y la inactivación enzimática.
Principales métodos:
- Síntesis de análogos de aminoglucósidos con conformación restringida.
- Evaluación de la afinidad de unión al ARN ribosomal.
- Ensayos de inactivación enzimática utilizando enzimas de resistencia bacteriana.
Principales resultados:
- La restricción de conformación afectó mínimamente la unión del ARN ribosomal.
- La preorganización estructural redujo significativamente la inactivación enzimática por las enzimas de resistencia.
- Demostró el potencial para explotar las diferencias conformacionales entre el objetivo y los sitios de unión de la enzima.
Conclusiones:
- Los aminoglucósidos conformalmente bloqueados ofrecen un enfoque prometedor para combatir la resistencia a los antibióticos.
- La explotación de distintas conformaciones de ligandos en el ribosoma frente a los sitios activos de la enzima puede producir derivados efectivos de antibióticos.
- Esta estrategia proporciona un plan para el diseño de antibióticos de próxima generación contra cepas bacterianas resistentes.
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