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El uso de fusiones de proteínas no naturales para diseñar la biosíntesis del resveratrol en levaduras y células de
Yansheng Zhang1, Song-Zhe Li, Jia Li
1Donald Danforth Plant Science Center, St. Louis, Missouri 63132, USA.
Journal of the American Chemical Society
|October 5, 2006
Resumen
Los investigadores diseñaron una planta.
Área de la Ciencia:
- La bioquímica es la bioquímica.
- Biología sintética Biología sintética.
- Ingeniería Metabólica Ingeniería Metabólica.
Sus antecedentes:
- El resveratrol, un compuesto derivado de plantas, ofrece beneficios para la salud y propiedades de extensión de vida.
- La biosíntesis del resveratrol involucra enzimas específicas como la liasa de amoníaco de tirosina (TAL), la 4-cumarato CoA-ligasa (4CL) y la sintasa de stilbeno (STS).
Objetivo del estudio:
- Para establecer una vía de biosíntesis de resveratrol de novo en un huésped no vegetal.
- Investigar la eficiencia de la localización de enzimas para mejorar la producción de resveratrol.
Principales métodos:
- Genes aislados que codifican TAL, 4CL y STS de diferentes organismos.
- Levadura de ingeniería y células HEK293 humanas para la producción de resveratrol.
- Utilizó proteínas de fusión traslacional para mejorar la proximidad de la enzima y la eficiencia de la vía.
Principales resultados:
- Las células de levadura que expresan 4CL y STS producen resveratrol a partir del ácido 4-cumárico.
- Una fusión traslacional de 4CL y STS aumentó la producción de resveratrol 15 veces en la levadura.
- Se logró una exitosa biosíntesis de novo de resveratrol y acumulación intracelular en células HEK293 humanas.
Conclusiones:
- Diseñó una vía completa de productos naturales vegetales en un huésped mamífero.
- Se demostró que la localización física de las enzimas mejora la eficiencia de la vía metabólica.
- Se abrió la posibilidad de producir resveratrol en las fábricas de células de mamíferos.
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