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Reconstitución de Staphylococcus aureus La actividad de la sintasa del ácido lipoteicoico identifica el rojo del
Christopher R Vickery1, B McKay Wood1, Heidi G Morris1
1Department of Microbiology and Immunobiology, Harvard University , 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, United States.
Journal of the American Chemical Society
|January 5, 2018
Resumen
El tinte azoico rojo del Congo inhibe eficazmente la sintasa del ácido lipoteicoico (LTA), una enzima crucial para el crecimiento de Staphylococcus aureus. Este hallazgo valida el rojo del Congo como una herramienta clave para estudiar la biosíntesis de LTA y desarrollar nuevos antibióticos.
Área de la Ciencia:
- Microbiología
- La bioquímica
- Descubrimiento de drogas
Sus antecedentes:
- El ácido lipoteicoico (LTA) es vital para el crecimiento de Staphylococcus aureus.
- La LTA sintasa (LtaS) es una enzima clave en la biosíntesis de LTA y un objetivo potencial de fármaco.
Objetivo del estudio:
- Para reconstituir la actividad de polimerización de LtaS in vitro.
- Identificar y validar los inhibidores de la LtaS.
- Para explorar los efectos fisiológicos de la inhibición de LtaS.
Principales métodos:
- Reconstitución de la actividad de polimerización de LtaS.
- Ensayos de inhibición de enzimas in vitro y en las células.
- Estudios de letalidad sintética con cepas mutantes con deficiencia de LTA.
Principales resultados:
- El rojo del Congo fue identificado como un potente inhibidor de LtaS in vitro y en células.
- Otros tintes azoicos relacionados y los inhibidores informados previamente mostraron una actividad mínima.
- La letalidad sintética confirmó la inhibición selectiva de LtaS por el rojo del Congo.
Conclusiones:
- El rojo del Congo es el primer inhibidor validado de LtaS.
- El rojo del Congo se puede utilizar para investigar el papel de la LTA en la fisiología celular.
- El rojo del Congo puede guiar el desarrollo de nuevos antibióticos contra S. aureus.
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