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El análisis de la secuencia de nucleótidos identifica el proto-oncogén c-sis humano como un gen estructural para el
Cell
|May 1, 1984
Resumen
El producto genético del virus del sarcoma simio (v-sis) es similar al factor de crecimiento derivado de plaquetas humanas (PDGF). Los investigadores clonaron el gen humano (c-sis) y descubrieron que codifica un polipéptido PDGF, lo que indica una fuerte conservación durante la evolución de los primates.
Área de la Ciencia:
- Biología molecular La biología molecular.
- Oncología Oncología.
- Genética La genética.
Sus antecedentes:
- El gen transformador del virus del sarcoma simio, v-sis, codifica una proteína, p28sis, estrechamente relacionada con el factor de crecimiento derivado de plaquetas humanas (PDGF).
- El factor de crecimiento derivado de plaquetas (PDGF) es un potente mitógeno para las células del tejido conectivo.
Objetivo del estudio:
- Clonar y caracterizar el gen humano relacionado con v-sis.
- Para determinar si el gen humano codifica un polipéptido PDGF.
Principales métodos:
- La clonación del locus relacionado con el v-sis humano.
- Análisis de la secuencia de nucleótidos de los exones del gen humano.
- Comparación de la predicción de la secuencia de aminoácidos humanos c-sis con las secuencias v-sis y PDGF.
Principales resultados:
- El locus relacionado con el v-sis humano contiene al menos cinco exones.
- La secuencia de aminoácidos predicha de la c-sis humana difiere en un 6% de la v-sis.
- El c-sis humano es el gen estructural de un importante polipéptido PDGF.
Conclusiones:
- El sis proto-oncogén está bien conservado durante la evolución de los primates.
- El gen humano c-sis codifica un componente funcional del PDGF, un regulador clave del crecimiento celular.
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