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El LncRNA ZFAS1 inducido por SP1 contribuye a la proliferación y migración celular en el cáncer gástrico a través de
1Department of Gastroenterology, The First Hospital of Jilin University, Changchun, China.
Iranian journal of biotechnology
|August 27, 2025
Resumen
El ARN largo no codificante ZFAS1 promueve la progresión del cáncer gástrico mediante la regulación al alza de la vía AKT/mTOR. El factor de transcripción SP1 se une al promotor ZFAS1, aumentando su expresión y impulsando el crecimiento y la supervivencia de las células cancerosas.
Área de la Ciencia:
- Oncología molecular
- Biología del cáncer
- La epigenética
Sus antecedentes:
- El cáncer gástrico sigue siendo un importante desafío para la salud mundial.
- Los ARN largos no codificantes (ARNlnc) son cada vez más reconocidos por su papel en el cáncer.
- Comprender los mecanismos moleculares de la progresión del cáncer gástrico es crucial para desarrollar terapias efectivas.
Objetivo del estudio:
- Para investigar el papel del lncRNA ZFAS1 en el cáncer gástrico.
- Para aclarar la relación reguladora entre SP1 y ZFAS1.
- Determinar el impacto de ZFAS1 en la vía de señalización AKT/mTOR en el cáncer gástrico.
Principales métodos:
- RT-qPCR para evaluar la expresión de ZFAS1 en las células cancerosas gástricas (SGC7901) y las células normales (GES-1).
- Análisis de la expresión del lncRNA utilizando la base de datos de LnCAR.
- knockdown mediado por siRNA de ZFAS1 para evaluar los efectos sobre la proliferación celular, la migración, la invasión y la apoptosis.
- Los ensayos de ChIP confirman la unión de SP1 al promotor ZFAS1.
- Bloqueo occidental para analizar la activación de la vía AKT/mTOR.
Principales resultados:
- La expresión de ZFAS1 se regulaba significativamente en las células cancerosas gástricas y se asociaba con un mal pronóstico.
- La eliminación de ZFAS1 inhibió la proliferación celular, la migración y la invasión, mientras inducía la apoptosis.
- SP1 se une directamente al promotor ZFAS1, mejorando su transcripción.
- ZFAS1 eliminó la activación de la vía AKT / mTOR, un efecto parcialmente revertido por el activador AKT SC79.
Conclusiones:
- ZFAS1 juega un papel crítico en la promoción de la progresión del cáncer gástrico.
- La regulación al alza de ZFAS1 mediada por SP1 contribuye a la malignidad del cáncer gástrico.
- ZFAS1 ejerce sus efectos, al menos en parte, a través de la vía de señalización AKT/mTOR.
- Dirigirse a ZFAS1 presenta una estrategia terapéutica potencial para el cáncer gástrico.
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