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Inhibición covalente irreversible inducida por la luz y dirigida a la lisina del factor hidroxilasa inhibidor del

Yue Wu¹, Zhihong Li¹, Samanpreet Kaur²

¹State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Design and Optimization, and Department of Chemistry, China Pharmaceutical University, Nanjing 211198, China.

Journal of the American Chemical Society

|May 9, 2025

Resumen

Los investigadores desarrollaron un nuevo inhibidor activado por luz, NBA-ZG-2291, que se une covalentemente al factor inhibidor del factor inducible a la hipoxia (FIH). Esta inhibición dirigida permite una modulación precisa y controlada por la luz de la actividad de FIH y sus efectos posteriores en la expresión génica.

Área de la Ciencia:

La bioquímica
Biología molecular
Química medicinal

Sus antecedentes:

El factor inhibidor del factor inducible a la hipoxia (FIH) es una enzima oxigenasa crucial para regular la vía del factor inducible a la hipoxia (HIF).
El papel de FIH en la hidroxilación de proteínas afecta el metabolismo celular y la respuesta hipóxica, por lo que es un objetivo terapéutico.

Objetivo del estudio:

Desarrollar un nuevo inhibidor covalente inducible a la luz para el control espacial-temporal preciso de la actividad de FIH.
Investigar el mecanismo y la eficacia de un nuevo inhibidor dirigido a Lys106 de FIH.

Principales métodos:

Diseño y síntesis guiados por la estructura de un inhibidor covalente (NBA-ZG-2291) mediante la modificación de un inhibidor FIH existente (ZG-2291).
Se utilizó un grupo de alcohol o-nitrobenzilo activado por luz para la modificación covalente dirigida.
Eficacia del inhibidor evaluada mediante ensayos bioquímicos que miden la actividad de hidroxilación de FIH y análisis de la expresión génica de los genes diana de HIF.

Principales resultados:

NBA-ZG-2291 forma un enlace covalente estable con Lys106 de FIH de una manera dependiente de la luz.
El adducto covalente inactiva la actividad enzimática de FIH.
La inhibición inducida por la luz de la FIH conduce a una regulación sostenida de los genes diana de la HIF dependientes de la FIH.

Conclusiones:

Desarrolló un nuevo inhibidor covalente controlado por luz (NBA-ZG-2291) para FIH.
Se ha demostrado el potencial de los inhibidores covalentes activados por la luz para la regulación espacial-temporal precisa de la actividad enzimática.
El inhibidor facilita la investigación de las funciones fisiológicas de FIH de una manera dependiente del contexto.

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