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Updated: Sep 8, 2025

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Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
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Las mutaciones de KEAP1 activan la vía NRF2 para impulsar el crecimiento y la migración celular y atenuar la
bioRxiv : the preprint server for biology
|August 20, 2025
Resumen
Las mutaciones de KEAP1 son más comunes en el cáncer de tiroides de lo que se pensaba anteriormente, impulsando la activación de la vía NRF2 e impactando el comportamiento celular. Estos hallazgos destacan KEAP1 como un potencial factor oncogénico en los tumores de tiroides.
Área de la Ciencia:
- En el campo de la oncología
- Biología molecular
- La genética
Sus antecedentes:
- La vía KEAP1 / NRF2 regula el estrés oxidativo y a menudo se altera en los cánceres.
- Las mutaciones de KEAP1 son comunes en varios tipos de cáncer, pero poco exploradas en el carcinoma de tiroides.
Objetivo del estudio:
- Investigar la prevalencia y el significado funcional de las mutaciones de KEAP1 en el carcinoma de tiroides.
- Explorar el impacto de la pérdida de KEAP1 en la vía NRF2 y las funciones celulares en los tumores tiroideos.
Principales métodos:
- Secuenciación de tumores de tiroides pediátricos y análisis de conjuntos de datos públicos.
- Modelos de líneas celulares in vitro para evaluar las consecuencias funcionales del KO de KEAP1.
- Análisis del transcriptoma para evaluar la activación de la vía NRF2.
Principales resultados:
- Se identificaron 81 mutaciones de KEAP1 y pérdida bialélica frecuente en tumores de tiroides.
- La pérdida de KEAP1 condujo a una regulación ascendente dependiente de NRF2 de los genes antioxidantes, una mayor proliferación y migración.
- La pérdida de KEAP1 redujo la sensibilidad de las células RET positivas a la fusión al selpercatinib.
Conclusiones:
- Las mutaciones de KEAP1 son factores oncogénicos prevalentes y funcionalmente significativos en el cáncer de tiroides.
- El perfil de la vía KEAP1/NRF2 debe integrarse en la investigación del cáncer de tiroides y en la práctica clínica.
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