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Un marco integrado identificó potentes inhibidores dirigidos a IRE1α
Subramaniyan Divya1, Priti Talwar2, Palaniyandi Ravanan1
1Functional Genomics Laboratory, Department of Microbiology, School of Life Sciences, Central University of Tamil Nadu, Thiruvarur 610005, Tamil Nadu, India.
Bioorganic & medicinal chemistry
|February 11, 2026
Resumen
Los flavonoides amentoflavona y glicetina inhiben la actividad de la IRE1α quinasa y modulan la señalización de la respuesta proteica desplegada (UPR), ofreciendo potencial para el tratamiento del estrés ER y las enfermedades inflamatorias.
Área de la Ciencia:
- La bioquímica es la bioquímica.
- Biología Molecular Biología Molecular
- Farmacología Farmacología.
Sus antecedentes:
- La enzima 1 alfa que requiere inositol (IRE1α) es un sensor clave en la respuesta proteica desplegada (UPR), crucial para la homeostasis del retículo endoplasmático (ER).
- La desregulación de la señalización IRE1α está relacionada con varias enfermedades, lo que pone de relieve la necesidad de objetivos terapéuticos.
Objetivo del estudio:
- Identificar y caracterizar los flavonoides que modulan la actividad de IRE1α.
- Investigar el potencial de la amentoflavona y la glicetina como inhibidores de la actividad de la IRE1α quinasa y activadores de su función RNasa.
Principales métodos:
- Acoplamiento computacional (AutoDock Vina, AutoDock Wizard, iGEMDOCK) para predecir las afinidades de unión de flavonoides con IRE1α.
- Ensayos de quinasa in vitro para determinar los valores de IC50 para la amentoflavona y la gliciteína.
- Ensayos basados en células para evaluar los efectos antiinflamatorios y la modulación de la señalización IRE1α-XBP1.
Principales resultados:
- La amentoflavona y la glicetina demostraron una inhibición significativa de la actividad de la IRE1α quinasa (IC50: 16.4 μM y 23.68 μM, respectivamente).
- Estos flavonoides promueven el empalme de XBP1 y la expresión de IRE1α en condiciones normales.
- El pretratamiento con flavonoides atenuó la señalización IRE1α-XBP1 inducida por LPS y redujo la inflamación.
Conclusiones:
- La amentoflavona y la glicetina muestran efectos moduladores prometedores en IRE1α, actuando como inhibidores de la quinasa y activadores de la RNasa.
- Este estudio es el primero en reportar estas propiedades de modulación dual para estos flavonoides.
- Los flavonoides representan una estrategia terapéutica potencial para el estrés ER y las condiciones inflamatorias asociadas.
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