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Michael J Lee1, Albert S Ye, Alexandra K Gardino
1Department of Biology, David H. Koch Institute for Integrative Cancer Research, Cambridge, MA 02139, USA.
Cell
|May 15, 2012
Resumen
La inhibición del EGFR escalonada en el tiempo, no simultánea, sensibiliza a las células de cáncer de mama triple negativo a la quimioterapia. Este recableado dinámico se dirige al cáncer mediante la reactivación de las vías de muerte celular.
Área de la Ciencia:
- Oncología Oncología.
- Biología Molecular Biología Molecular
- Biología de Sistemas Biología de Sistemas.
Sus antecedentes:
- La complejidad de las vías de señalización y la perturbación oncogénica obstaculizan la investigación tradicional de enfermedades.
- Las terapias farmacológicas dirigidas requieren la comprensión de la reconexión de la vía para la especificidad y la eficacia.
Objetivo del estudio:
- Investigar el impacto de la inhibición escalonada en el tiempo frente a la inhibición simultánea del EGFR combinada con quimioterapia en las células de cáncer de mama triple negativo.
- Explorar enfoques a nivel de sistemas para recablear dinámicamente las vías de señalización oncogénica para mejorar la eficacia de los medicamentos contra el cáncer.
Principales métodos:
- Utilizó la inhibición dirigida de las vías de señalización oncogénica y la quimioterapia que daña el ADN.
- Empleó mediciones de alta densidad y dependientes del tiempo de redes de señalización, expresión génica y fenotipos celulares.
- Modelado matemático aplicado para el análisis a nivel de sistemas.
Principales resultados:
- La inhibición del receptor del factor de crecimiento epidérmico (EGFR) escalonada en el tiempo, pero no la administración simultánea, sensibilizó significativamente a un subconjunto de células de cáncer de mama triple negativo a los medicamentos genotóxicos.
- El análisis a nivel de sistemas reveló una recableación dinámica de las vías de señalización oncogénica.
- Este recableado convirtió las células en un estado menos tumorigénico, aumentando la susceptibilidad a la muerte celular inducida por daño al ADN.
Conclusiones:
- El recableado dinámico de las vías de señalización oncogénica ofrece una nueva estrategia para atacar tumores.
- La reactivación de las vías apoptóticas extrínsecas a través de una intervención farmacológica programada mejora la muerte de las células cancerosas.
- Este enfoque es prometedor para aumentar la especificidad y la eficacia de las terapias contra el cáncer.
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