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Mapping the Structure-Function Relationships of Disordered Oncogenic Transcription Factors Using Transcriptomic Analysis
Published on: June 27, 2020
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Las mutaciones de ERF revelan un equilibrio de factores ETS que controlan la oncogénesis de la próstata
Rohit Bose1,2, Wouter R Karthaus1, Joshua Armenia1,3
1Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, New York 10065, USA.
Nature
|June 15, 2017
Resumen
Cáncer de próstata
Área de la Ciencia:
- Biología molecular
- La genética
- En el campo de la oncología
Sus antecedentes:
- La fusión de genes TMPRSS2-ERG impulsa la mitad de los cánceres de próstata mediante la regulación al alza del factor de transcripción ERG.
- Se observan mutaciones y deleciones recurrentes en ERF, un miembro de la familia ETS, en tumores de próstata.
Objetivo del estudio:
- Para investigar el papel de las mutaciones de ERF en el cáncer de próstata.
- Aclarar la relación funcional entre ERG y ERF en el desarrollo y la progresión del cáncer de próstata.
Principales métodos:
- Análisis de las mutaciones de ERF y su efecto en la estabilidad de las proteínas.
- Estudios funcionales en células normales de próstata de ratón y líneas celulares de cáncer de próstata.
- Immunoprecipitación de la cromatina seguida de secuenciación (ChIP-seq) para evaluar los sitios de unión de ERF y ERG.
Principales resultados:
- Las mutaciones de ERF disminuyen la estabilidad de la proteína y están asociadas con tumores que carecen de regulación ERG al alza.
- La pérdida de ERF imita los fenotipos de ganancia de función de ERG, incluida la expansión del receptor de andrógenos.
- El ERG inhibe la unión del ERF al ADN, y el ERF puede contrarrestar la actividad oncogénica del ERG.
Conclusiones:
- La oncogenicidad de ERG implica la competencia y la inactivación del supresor tumoral ERF.
- El ERF actúa como supresor tumoral, oponiéndose a las funciones oncogénicas del ERG.
- Este modelo de competencia puede extenderse a otros factores de transcripción oncogénicos y supresores de tumores endógenos.
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