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ARN pequeño: ¿se puede explotar la interferencia del ARN para la terapia?
1Department of Pathology, Harvard Medical School, Boston, MA 02115, USA.
Lancet (London, England)
|October 31, 2003
Resumen
La interferencia de ARN (RNAi) ofrece un método poderoso para silenciar los genes, con pequeños ARN interferentes (siRNA) que muestran promesa para las terapias genéticas. Se necesita un mayor desarrollo en la entrega y la estabilidad para aplicaciones clínicas.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- Genética La genética.
- Biotecnología La biotecnología es la biotecnología.
Sus antecedentes:
- La interferencia de ARN (RNAi) es un proceso natural de silenciamiento de genes.
- Los pequeños ARN interferentes (siRNA) son efectores clave de RNAi, lo que permite el derribo de genes específicos de la secuencia.
- El RNAi se está explorando para aplicaciones terapéuticas en infecciones virales, cánceres y trastornos genéticos.
Objetivo del estudio:
- Explorar el potencial de la interferencia de ARN (RNAi) para estudios de función génica y aplicaciones terapéuticas.
- Investigar el uso de pequeños ARN interferentes (siARN) para el silenciamiento de genes dirigidos.
- Identificar nuevas dianas terapéuticas mediante el estudio de familias de genes involucradas en vías relevantes para el cáncer.
Principales métodos:
- Utilizando ARN pequeños interferentes sintéticos (siARN) para la inhibición de genes específicos de la secuencia.
- Empleando plásmidos y vectores virales para la expresión eficiente de siRNA y ARN de horquilla corta (shRNA).
- Desarrollar vectores de interferencia de ARN para suprimir familias genéticas específicas, como las enzimas de ubiquitinación.
Principales resultados:
- Se demostró que los siRNA pueden inhibir selectivamente la expresión génica endógena.
- Identificó el gen supresor del tumor de la cilindromatosis (CYLD) como un regulador de la activación de NF-kappaB y la resistencia a la apoptosis.
- Ha demostrado una inhibición estable de la expresión génica mediante el uso de plásmidos y sistemas de expresión de shRNA basados en vectores virales in vitro e in vivo.
Conclusiones:
- RNAi, en particular el uso de siRNAs y shRNAs, proporciona una herramienta robusta para el análisis de la función génica y las posibles intervenciones terapéuticas.
- La entrega eficiente y estable de siRNA / shRNA a los tejidos objetivo sigue siendo un área crítica para la traducción clínica.
- La investigación adicional y el refinamiento de los sistemas de administración están allanando el camino para los ensayos clínicos que utilizan terapias basadas en RNAi.
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