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Comentario sobre la inserción de ADN guiado por ARN con las transposasas asociadas a CRISPR
Phoebe A Rice1, Nancy L Craig2, Fred Dyda3
1Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL, USA. price@uchicago.edu.
Science (New York, N.Y.)
|June 6, 2020
Resumen
Un sistema CRISPR-Cas ofrece inserciones de ADN guiadas por ARN programables. Sin embargo, el sistema de transposones Tn7 también puede insertar todo el plásmido donante, no solo el transposón deseado.
Área de la Ciencia:
- Biología molecular
- La genética
- Biotecnología
Sus antecedentes:
- Los sistemas CRISPR-Cas proporcionan una orientación del ADN guiada por ARN.
- Los transposones de tipo Tn7 son elementos genéticos móviles utilizados para la inserción de ADN.
Objetivo del estudio:
- Evaluar un sistema CRISPR-Cas codificado por transposones del tipo Tn7 para inserciones de ADN programables.
- Identificar las limitaciones potenciales del sistema descrito.
Principales métodos:
- Utilizó un sistema de transposones tipo Tn7.
- Empleó la maquinaria CRISPR-Cas para la orientación guiada por ARN.
- Productos de inserción analizados.
Principales resultados:
- El sistema permite inserciones programables guiadas por ARN.
- Las propiedades bioquímicas de Tn7 sugieren la coinserción del plásmido donante.
Conclusiones:
- El sistema CRISPR-Cas descrito es prometedor para la integración de ADN dirigido.
- Se necesitan más investigaciones para confirmar el grado de coinserción de plásmidos.
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