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Inhibidor CENP-E fotointercambiable que permite el control dinámico del movimiento de los cromosomas y la progresión

Noushaba Nusrat Mafy¹, Kazuya Matsuo¹, Shota Hiruma²

¹Research Institute for Electronic Science , Hokkaido University , Kita 20, Nishi 10 , Kita-ku, Sapporo , 001-0020 , Japan.

Journal of the American Chemical Society

|January 14, 2020

Resumen

Este estudio introduce un inhibidor controlado por la luz para CENP-E, una proteína clave en la división celular. Este medicamento fotointercambiable ofrece un control preciso de la mitosis, lo que podría conducir a terapias contra el cáncer más seguras y efectivas.

Área de la Ciencia:

La bioquímica
Biología molecular
Biología celular

Sus antecedentes:

Interferir con la mitosis es una estrategia prometedora para el tratamiento del cáncer.
Los medicamentos antimitóticos actuales carecen de un control preciso, lo que lleva a efectos secundarios significativos.
La CENP-E, una quinesia mitótica, es crucial para el transporte de cromosomas durante la división celular.

Objetivo del estudio:

Para desarrollar un inhibidor fotoswitchable para CENP-E.
Para lograr una interferencia precisa y controlada por la luz con la mitosis.
Explorar las funciones precisas del CENP-E en los procesos celulares.

Principales métodos:

Desarrollo de un inhibidor de la CENP-E basado en el azobenceno.
Evaluación in vitro e in vivo de la actividad inhibidora y el fotointercambio.
Ciclos de iluminación UV/vis para controlar la actividad del inhibidor y observar los efectos sobre la congestión cromosómica y la progresión mitótica.

Principales resultados:

El inhibidor demostró un fotoswitching reversible de la actividad de CENP-E con un cambio de ~10 veces en el IC50 entre los estados cis y trans.
Se logró el fotointercambio repetitivo de la congestión cromosómica y la progresión mitótica utilizando luz.
El estudio identificó con precisión el papel de CENP-E en etapas específicas de la progresión mitótica.

Conclusiones:

Un enfoque fotoquímico permite una interferencia altamente controlable con la mitosis.
Este método permite el descubrimiento de funciones moleculares precisas en procesos celulares dinámicos.
El inhibidor fotoswitchable desarrollado tiene potencial para la terapia dirigida contra el cáncer con efectos secundarios reducidos.

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