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Reconfiguración de la Activación del Receptor: Perspectivas Mecanicistas sobre la Modulación del Interruptor de

Vito F Palmisano^1,2, Micaela Vidal Sánchez¹, Juan J Nogueira^1,3

¹Department of Chemistry, Universidad Autonoma de Madrid, 28049 Madrid, Spain.

ACS chemical neuroscience

|February 18, 2026

Resumen

La investigación de compuestos psicodélicos revela cómo los cambios moleculares en los compuestos 25CN-NBx afectan al receptor de serotonina 5-HT2A. Las sustituciones voluminosas desplazan residuos clave, influyendo en la activación del receptor y en los posibles efectos antidepresivos.

Área de la Ciencia:

Neurociencia
Farmacología
Química Computacional

Sus antecedentes:

La comprensión de los trastornos neuropsiquiátricos requiere la elucidación de los mecanismos de los compuestos psicodélicos.
Es crucial diferenciar entre los efectos alucinógenos y antidepresivos para el desarrollo de nuevos tratamientos.

Objetivo del estudio:

Investigar las interacciones moleculares de los compuestos 25CN-NBx con el receptor 5-HT2A utilizando simulaciones de dinámica molecular.
Identificar los determinantes estructurales de la activación del receptor y las vías de señalización.

Principales métodos:

Simulaciones de dinámica molecular de compuestos 25CN-NBx unidos al receptor 5-HT2A.
Cálculos de potencial de fuerza media para analizar el movimiento del residuo del interruptor de palanca.
Cálculos de energía libre de extremo para predecir las afinidades de unión.

Principales resultados:

Las sustituciones voluminosas de N-bencilo inducen cambios significativos en el residuo del interruptor de palanca W336.
La posición de W336 se correlaciona con la activación del receptor, y compuestos específicos muestran distintas afinidades de unión.
Las interacciones estabilizadas de van der Waals que involucran a W336 en su estado diédrico negativo están relacionadas con la activación del receptor.

Conclusiones:

Los hallazgos proporcionan un marco molecular para comprender la activación del receptor 5-HT2A por análogos psicodélicos.
El estudio ofrece información para diferenciar los efectos de los compuestos psicodélicos en función de las modificaciones estructurales.
Los principios identificados pueden aplicarse a otros receptores acoplados a proteínas G que involucran mecanismos de interruptor de palanca.

Palabras clave:

compuestos 25CN-NBx receptor 5-hidroxitriptamina 2A (5-HT2AR)receptor acoplado a proteína G (GPCR)N-bencilo fuerzas de van der Waals (vdw)

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