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Papel regulador para el supresor tumoral REST en el receptor de estrógeno (ESR1) Expresión y fisiopatología del
bioRxiv : the preprint server for biology
|September 5, 2025
Resumen
La pérdida de REST en los fibromas uterinos interrumpe la señalización de estrógeno y progesterona. El papel de REST en la regulación epigenética ofrece potencial para nuevos métodos de cultivo celular y terapias para el leiomioma uterino.
Área de la Ciencia:
- Biología de la reproducción
- La epigenética
- Endocrinología molecular
Sus antecedentes:
- Los leiomiomas uterinos (fibroides) afectan a la mayoría de las mujeres a los 50 años, con una fisiopatología poco clara.
- Los modelos preclínicos actuales y los sistemas in vitro luchan por replicar la señalización hormonal del leiomioma uterino.
- La expresión del receptor de estrógeno alfa (ESR1) y del receptor de progesterona (PGR) se pierde rápidamente en las células del músculo liso uterino cultivadas, lo que limita la investigación.
Objetivo del estudio:
- Investigar el papel del REST (represor del silenciamiento) en el desarrollo del leiomioma uterino y la regulación de los receptores hormonales.
- Identificar los mecanismos mediante los cuales REST influye en la expresión de la RSE1 y la RGP.
- Explorar el potencial de REST como objetivo terapéutico y su papel en la regulación epigenética del leiomioma uterino.
Principales métodos:
- Immunoprecipitación de la cromatina (ChIP-PCR y ChIP-seq) en modelos de ratón y cultivos celulares.
- Análisis de la asociación REST con los loci genómicos ESR1 y PGR.
- Investigación del papel de PRICKLE1 en la regulación de la ESR1 mediada por REST.
Principales resultados:
- REST se une directamente al locus ESR1, regulando epigenéticamente su expresión.
- La pérdida de REST en modelos de ratón afecta globalmente a los genes objetivo de PGR y altera la unión de PGR en el locus ESR1.
- La inhibición de la ESR1 por parte de REST está vinculada a la molécula de la vía WNT PRICKLE1.
- La función de REST en el silenciamiento de ESR1 en células cultivadas sugiere el potencial de la modulación de REST para mantener la expresión de ESR1.
Conclusiones:
- REST es un regulador epigenético clave en la fisiopatología del leiomioma uterino.
- REST juega un papel fundamental en el mantenimiento de las vías normales de señalización de estrógeno y progesterona.
- La modulación REST presenta una estrategia potencial para nuevas técnicas de cultivo celular y intervenciones terapéuticas para el leiomioma uterino.
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