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Activación del potencial de transformación del gen FPS celular
Cell
|August 1, 1985
Resumen
Las secuencias de genes de células de pollo-fps (c-fps) por sí solas no transforman a los fibroblastos. Sin embargo, cuando se fusiona con secuencias de genes virales gag, c-fps gana potencial de transformación, lo que sugiere que se requiere activación para la oncogénesis.
Área de la Ciencia:
- Biología Molecular Biología Molecular
- La oncogénesis es la oncogénesis.
- La expresión génica retroviral.
Sus antecedentes:
- Se sabe que las secuencias virales fps (v-fps) transforman los fibroblastos.
- El potencial oncogénico del producto genético del pollo celular-fps (c-fps) no se entiende completamente.
- Los vectores retrovirales se utilizan para estudiar la función y la transformación de los genes.
Objetivo del estudio:
- Para investigar el potencial de transformación de las secuencias de genes de células de pollo-fps (c-fps).
- Para determinar si c-fps requiere activación para la transformación de fibroblastos y la inducción de tumores.
- Para comparar la capacidad de transformación de c-fps solo versus c-fps fusionado con secuencias de mordaza viral.
Principales métodos:
- Sustitución de las secuencias virales-fps (v-fps) por secuencias c-fps en genomas retrovirales.
- Expresión del producto genético c-fps y la proteína de fusión gag-fps utilizando vectores virales.
- Evaluación de la transformación de fibroblastos y la inducción de tumores en modelos experimentales.
Principales resultados:
- La expresión de alto nivel de las secuencias de genes c-fps por sí sola no indujo la transformación de los fibroblastos.
- La expresión de secuencias c-fps vinculadas a secuencias de genes gag resultó en la transformación de fibroblastos.
- Se observó inducción tumoral cuando c-fps se expresó como una proteína de fusión gag-fps.
Conclusiones:
- El producto del gen c-fps carece de potencial de transformación intrínseco, incluso cuando se sobreexpresa.
- La activación del potencial de transformación c-fps puede ocurrir a través de mutaciones dentro de la región de codificación de fps.
- La fusión con las secuencias virales del gen gag activa el potencial oncogénico del gen c-fps.
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