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Anti-virulent Disruption of Pathogenic Biofilms using Engineered Quorum-quenching Lactonases
Published on: January 1, 2016
Inhibidores de moléculas pequeñas de la detección de quórum bacteriana y la formación de biofilms
Grant D Geske1, Rachel J Wezeman, Adam P Siegel
1Department of Chemistry, University of Wisconsin--Madison, 1101 University Avenue, Madison, Wisconsin 53706, USA.
Journal of the American Chemical Society
|September 15, 2005
Resumen
Los investigadores desarrollaron un nuevo método para crear autoinductores bacterianos, las lactonas N-acil l-homoserina (AHL). Esto condujo a nuevos análogos de AHL que actúan como potentes antagonistas de la detección de quórum, útiles para estudiar las infecciones bacterianas.
Área de la Ciencia:
- Microbiología Microbiología.
- Química sintética de la química sintética.
- Biología Molecular Biología Molecular
Sus antecedentes:
- Las bacterias utilizan la detección de quórum (QS) para regular los comportamientos grupales basados en la densidad de población.
- La detección de quórum se basa en pequeñas moléculas llamadas autoinductores, como las lactonas N-acil l-homoserina (AHL) en muchas bacterias Gram-negativas.
- Comprender y manipular el QS es crucial para controlar las poblaciones bacterianas y la patogenicidad.
Objetivo del estudio:
- Desarrollar una ruta sintética eficiente para las lactonas N-acil l-homoserina (AHL).
- Para sintetizar una biblioteca de nuevos análogos AHL no nativos.
- Identificar potentes antagonistas de la detección de quórum para futuras investigaciones sobre la patogénesis bacteriana.
Principales métodos:
- Se estableció una nueva y eficiente metodología sintética para la producción de AHL.
- Se sintetizó una biblioteca diversa de análogos AHL no nativos utilizando la ruta desarrollada.
- Se emplearon ensayos de genes reporteros bacterianos y ensayos de formación de biopelículas para evaluar los compuestos sintetizados.
Principales resultados:
- La nueva ruta sintética demostró ser eficiente y versátil para la síntesis analógica de AHL.
- Una biblioteca de AHLs no nativos fue sintetizada con éxito por primera vez.
- Varios compuestos sintetizados demostraron una potente actividad antagónica contra el quorum sensing bacteriano.
Conclusiones:
- La ruta sintética desarrollada proporciona una herramienta valiosa para generar análogos AHL.
- Los antagonistas de la AHL identificados se pueden utilizar para investigar el papel de la detección de quórum en la patogénesis bacteriana.
- Este trabajo facilita el desarrollo de nuevas estrategias anti-virulencia dirigidas a la comunicación bacteriana.
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