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Updated: Jun 25, 2025

A Fluorescence-Based Assay of Membrane Potential for High-Throughput Functional Study of Two Endogenous Ion Channels in Two Epithelial Cell Lines

A Fluorescence-Based Assay of Membrane Potential for High-Throughput Functional Study of Two Endogenous Ion Channels in Two Epithelial Cell Lines

Published on: June 22, 2022

Descubrimiento basado en la estructura de potenciadores e inhibidores de la CFTR

Fangyu Liu¹, Anat Levit Kaplan², Jesper Levring³

¹Laboratory of Membrane Biology and Biophysics, The Rockefeller University, New York, NY 10065, USA; Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA 94143, USA.

|May 29, 2024

Resumen

Los investigadores descubrieron nuevas moléculas que pueden mejorar o bloquear la proteína reguladora de conductividad transmembrana de la fibrosis quística (CFTR). Estos hallazgos ofrecen nuevos tratamientos potenciales para la fibrosis quística y la diarrea secretora.

Área de la Ciencia:

La bioquímica
Farmacología
Biología estructural

Sus antecedentes:

El regulador de conductividad transmembrana de la fibrosis quística (CFTR) es un canal iónico crítico.
La disfunción CFTR causa fibrosis quística y diarrea secretora.
Los fármacos CFTR actuales tienen limitaciones, incluida la farmacocinética subóptima para los potenciadores y la falta de inhibidores desarrollados.

Objetivo del estudio:

Identificar nuevas moléculas pequeñas que modulan la actividad CFTR.
Descubrir nuevos potenciadores e inhibidores para el CFTR.
Explorar el acoplamiento molecular a gran escala para el descubrimiento de fármacos de canales iónicos.

Principales métodos:

Utilizado acoplamiento molecular de aproximadamente 155 millones de moléculas contra el sitio potenciador CFTR.
Utilizó la electrofisiología y la microscopía crioelectrónica (crio-EM) para el análisis estructural y funcional.
Química medicinal aplicada y optimización basada en la estructura para el refinamiento de ligandos.

Principales resultados:

Se han identificado nuevos potenciadores de CFTR con potencia nanomolar media.
Descubrieron inhibidores de CFTR que se unen al mismo sitio alostérico que los potenciadores.
Demostró la eficacia del acoplamiento a gran escala en la identificación de moduladores de canales iónicos.

Conclusiones:

Las moléculas identificadas son compuestos de plomo prometedores para el desarrollo de terapias mejoradas para la fibrosis quística y la diarrea secretora.
Este estudio valida el uso de acoplamiento molecular a gran escala para el descubrimiento de moduladores de canales iónicos.
Un mayor desarrollo de estos moduladores podría conducir a tratamientos más eficaces con perfiles farmacocinéticos mejorados.

Palabras clave:

El transportador ABC Canal aniónico Los inhibidores Acoplamiento a gran escala Descubrimiento de ligandos Potenciadores de energía

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