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Los genes transformadores de las neoplasias inducidas por los virus de la leucosis linfoide aviar
Nature
|October 16, 1980
Resumen
Los virus de la leucosis linfoide (VLL) causan tumores después de largos períodos de incubación. Los experimentos muestran que los tumores inducidos por LLV contienen genes transformadores no vinculados al ADN LLV, lo que sugiere una activación indirecta de los genes celulares.
Área de la Ciencia:
- Oncología Oncología.
- Virología Virología.
- Biología Molecular Biología Molecular
Sus antecedentes:
- Los retrovirus aviares oncogénicos se clasifican en los virus del sarcoma, la leucemia aguda y la leucosis linfoide (LLV).
- Los LLV inducen tumores con largos períodos latentes, a diferencia de los virus del sarcoma y la leucemia aguda que transforman las células in vitro y causan tumores rápidamente.
- La base genética de la oncogenicidad de los LLV no está clara, ya que sus genomas parecen carecer de oncogenes específicos.
Objetivo del estudio:
- Investigar la base genética de la oncogénesis inducida por los virus de la leucosis linfoide (VLL).
- Para determinar si los tumores inducidos por LLV albergan genes transformadores y su relación con el ADN viral.
Principales métodos:
- Se analizaron muestras de tumores inducidos por LLV.
- Se realizaron ensayos de transfección utilizando células de ratón NIH 3T3 para detectar genes transformadores.
- Análisis del vínculo entre los genes transformadores detectados y las secuencias de ADN LLV.
Principales resultados:
- Los tumores inducidos por LLV contenían genes transformadores detectables por la transfección celular NIH 3T3.
- Se descubrió que estos genes transformadores no estaban vinculados a las secuencias de ADN LLV.
- Esto sugiere que los LLV pueden no ser portadores directos de oncogenes, sino más bien activar los celulares.
Conclusiones:
- La oncogénesis por LLV probablemente implica la activación indirecta de los genes transformadores celulares.
- Los hallazgos proporcionan información sobre el mecanismo de la tumorigénesis por los retrovirus no transformadores.
- Se necesita más investigación para identificar los genes celulares específicos y las vías involucradas.
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