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Regulation of Hormone Secretion
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El metabolismo robusto de la Salmonella limita las posibilidades de nuevos antimicrobianos
Daniel Becker1, Matthias Selbach, Claudia Rollenhagen
1Max-Planck-Institute for Infection Biology, Department of Molecular Biology, D-10117 Berlin, Germany.
Nature
|March 17, 2006
Resumen
Una nueva investigación identifica enzimas esenciales de Salmonella enterica in vivo, encontrando pocos objetivos nuevos para los antibióticos de amplio espectro debido a las redundancias metabólicas y las vías de fármacos existentes.
Área de la Ciencia:
- Microbiología Microbiología.
- Descubrimiento de Drogas Descubrimiento de Drogas
- Biología de Sistemas Biología de Sistemas.
Sus antecedentes:
- Las enfermedades infecciosas requieren nuevos antibióticos.
- Las enzimas metabólicas son objetivos antimicrobianos potenciales.
- La validación de objetivos in vivo para las enzimas metabólicas es limitada.
Objetivo del estudio:
- Para identificar las enzimas esenciales de Salmonella enterica in vivo.
- Evaluar el potencial de estas enzimas como dianas para nuevos antibióticos.
- Para evaluar las redundancias de las vías metabólicas en Salmonella.
Principales métodos:
- Análisis de la red de fenotipos mutantes.
- Comparaciones del genoma. comparaciones del genoma.
- Análisis proteómico de Salmonella de ratones infectados.
Principales resultados:
- Se analizaron más de 700 enzimas de Salmonella enterica in vivo.
- Se descubrió que más de 400 enzimas no eran esenciales para la virulencia.
- Sesenta y cuatro enzimas esenciales se conservan en otros patógenos humanos, pero en gran medida se dirigen a vías conocidas.
Conclusiones:
- Hay un número limitado de nuevos objetivos metabólicos para los antibióticos de amplio espectro.
- Existen amplias redundancias metabólicas en la Salmonella.
- Objetivos previamente conocidos pero no explotados merecen una mayor investigación.
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