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From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028
Published on: January 13, 2017
La expresión génica que permite la diversificación sintética de productos naturales: generación quimiogenética de
Abhijeet Deb Roy1, Sabine Grüschow, Nickiwe Cairns
1School of Chemistry, University of East Anglia, Norwich NR4 7TJ, UK.
Journal of the American Chemical Society
|August 18, 2010
Resumen
Los científicos diseñaron una bacteria para clorar un antibiótico natural, la pacidamicina. Esta modificación permite cambios sintéticos más fáciles en el fármaco utilizando reacciones químicas simples.
Área de la Ciencia:
- Biotecnología La biotecnología es la biotecnología.
- Biología sintética Biología sintética.
- Química de Productos Naturales Química de Productos Naturales
Sus antecedentes:
- La pirrolnitrina es un antibiótico con un gen halogenasa conocido, prnA.
- Los antibióticos péptidos de uridil como la pacidamicina son productos naturales complejos.
- Modificar los productos naturales puede mejorar sus propiedades terapéuticas.
Objetivo del estudio:
- Investigar la viabilidad del uso del gen prnA para la cloración in situ de la pacidamicina.
- Establecer un método para la funcionalización de la pacidamicina para futuras modificaciones sintéticas.
Principales métodos:
- Introducción del gen prnA en el Streptomyces coeruleorubidus.
- Cultivo de Streptomyces modificados genéticamente para producir pacidamicina clorada.
- Utilizando reacciones leves de acoplamiento cruzado en extractos brutos para la modificación.
Principales resultados:
- Se logró una cloración in situ eficiente de la pacidamicina.
- El átomo de cloro introducido sirvió como un mango funcional para la síntesis posterior.
- Las modificaciones sintéticas tuvieron éxito en condiciones suaves en extractos crudos.
Conclusiones:
- El gen prnA puede emplearse eficazmente para la cloración dirigida de la pacidamicina.
- Este enfoque proporciona una plataforma versátil para la diversificación sintética de la pacidamicina.
- El método simplifica la modificación de productos naturales complejos, permitiendo el descubrimiento de fármacos.
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