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Síntesis templada de ácidos nucleicos peptídicos a través de reacciones de llenado de bases selectivas por secuencia

Jennifer M Heemstra¹, David R Liu

¹Howard Hughes Medical Institute and the Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.

Journal of the American Chemical Society

|September 3, 2009

Resumen

Este estudio introduce un nuevo método de llenado de bases para la síntesis de ácido nucleico templado utilizando ácido nucleico peptídico (PNA). Este enfoque permite una adición eficiente y selectiva de nucleobases individuales, reduciendo los productos no deseados para la transferencia potencial de información no enzimática.

Área de la Ciencia:

Biología sintética Biología sintética.
Biología Química Biología química.
La bioquímica es la bioquímica.

Sus antecedentes:

La síntesis de ácido nucleico tradicionalmente se basa en la ligadura de la columna vertebral de las unidades de nucleótidos.
Los métodos existentes pueden conducir a reacciones secundarias no predispuestas.

Objetivo del estudio:

Desarrollar un nuevo método no enzimático para la síntesis de ácido nucleico templado.
Explorar un enfoque de llenado de bases para agregar nucleobases al ácido nucleico peptídico (PNA).

Principales métodos:

Demostró una estrategia de llenado de bases para agregar nucleobases individuales a sitios básicos en PNA.
Utilizó las químicas de aminación reductora y acilación de aminas para la adición de bases.
Investigó adiciones de bases individuales y en tándem a las hebras de PNA.

Principales resultados:

Se logró una adición eficiente y selectiva de las cuatro nucleobases a los sitios básicos internos en PNA.
Se realizó con éxito la adición de una sola base al extremo de la hebra PNA.
Se ha demostrado la adición en tándem de dos bases a una hebra de PNA.

Conclusiones:

El enfoque de llenado de bases ofrece una alternativa prometedora para la síntesis de ácido nucleico templado.
Este método minimiza las reacciones no plantilladas debido a los sustratos de nucleobases no auto-reactivos.
Establece una base para la transferencia de información no enzimática a través del relleno de la base.

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