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Las benzotiazinonas matan a Mycobacterium tuberculosis al bloquear la síntesis de las arabinanas
Vadim Makarov1, Giulia Manina, Katarina Mikusova
1A. N. Bakh Institute of Biochemistry, Russian Academy of Science, 119071 Moscow, Russia.
Science (New York, N.Y.)
|March 21, 2009
Resumen
Las nuevas benzothiazinonas (BTZ) matan a las bacterias de la tuberculosis al atacar una enzima clave en la síntesis de la pared celular. El compuesto de plomo BTZ043 se muestra prometedor para el tratamiento de la tuberculosis sensible a los medicamentos y la tuberculosis resistente a los medicamentos.
Área de la Ciencia:
- Química Medicinal La Química Medicinal es un campo de estudio de la química medicinal.
- Microbiología Microbiología.
- Descubrimiento de Drogas Descubrimiento de Drogas
Sus antecedentes:
- La tuberculosis (TB) sigue siendo un desafío de salud global que requiere nuevos agentes terapéuticos.
- Los tratamientos existentes se enfrentan a desafíos con la resistencia a los medicamentos, lo que requiere nuevas clases de medicamentos.
Objetivo del estudio:
- Para sintetizar y caracterizar 1,3-benzothiazin-4-ones (BTZs) como una nueva clase de agentes antimicobacterianos.
- Identificar el objetivo molecular de las BTZ y dilucidar su mecanismo de acción contra Mycobacterium tuberculosis.
Principales métodos:
- Síntesis y caracterización química de las 1,3-benzotiazina-4-ones.
- Estudios de eficacia in vitro, ex vivo e in vivo en modelos de tuberculosis en ratones.
- Enfoques genéticos y bioquímicos para identificar el objetivo del fármaco.
Principales resultados:
- Las 1,3-benzothiazin-4-ones demostraron una potente actividad antimicobacteriana contra el Mycobacterium tuberculosis.
- Se identificó a la decaprenilfosforil-beta-d-ribosa 2'-epimerasa como una enzima diana importante para las ZBT.
- La inhibición de esta enzima interrumpe la síntesis de arabinanas, lo que lleva a la lisis celular y la muerte bacteriana.
Conclusiones:
- Las BTZ representan una nueva y prometedora clase de fármacos antimicobácterios.
- El mecanismo de acción identificado proporciona una nueva estrategia para el desarrollo de medicamentos contra la tuberculosis.
- BTZ043 es un candidato potencial para la terapia de combinación contra la tuberculosis sensible a los medicamentos y extensamente resistente a los medicamentos.
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