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Drug interactions occur when the pharmacological effect of one drug is altered by another substance, either enhancing or diminishing its activity. The drug whose activity is altered is known as the object drug, and the substance causing the alteration is called the agent drug or the precipitant. The net effects of these interactions are mostly undesirable, leading to decreased effectiveness or increased adverse effects. In rare cases, interactions can be beneficial, such as the enhanced...
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Updated: Jan 23, 2026

Evidence-based Knowledge Synthesis and Hypothesis Validation: Navigating Biomedical Knowledge Bases via Explainable AI and Agentic Systems
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Un método explicable de estimación de tokens moleculares para la predicción de interacciones fármaco-fármaco

Hui Yu, Chao Song, Jiahao Yuan

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    Resumen

    Este estudio explora el aprendizaje de representaciones moleculares (MRL) para la predicción de interacciones fármaco-fármaco (DDI). Un nuevo método, SimMotifPro, aprovecha los tokens de motivos para mejorar el rendimiento del modelo y la comprensión de las incrustaciones moleculares.

    Palabras clave:
    aprendizaje de representaciones molecularespredicción de interacciones fármaco-fármacoSimMotifProtokens de motivosredes neuronales de grafos

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    Área de la Ciencia:

    • Química computacional
    • Aprendizaje automático
    • Bioinformática

    Sus antecedentes:

    • El aprendizaje de representaciones moleculares (MRL) utiliza tokens como átomos y motivos para representar moléculas para Redes Neuronales de Grafos (GNN).
    • Si bien las GNN con tokens muestran una gran promesa en la predicción de interacciones fármaco-fármaco (DDI), no se comprende bien el impacto de la elección de tokens en la expresividad de las incrustaciones moleculares.

    Objetivo del estudio:

    • Definir teóricamente MRL desde una perspectiva del dominio de la frecuencia y analizar la influencia del recuento de tokens en el rendimiento del modelo.
    • Proponer SimMotifPro, un método eficiente basado en motivos para la predicción de DDI que incorpora conocimientos teóricos.

    Principales métodos:

    • Desarrolló una definición axiomática de MRL desde una perspectiva del dominio de la frecuencia para establecer límites teóricos superiores para la convergencia del modelo.
    • Propuso SimMotifPro, utilizando un codificador DeeperGCN, un grafo de conocimiento motivo-motivo y un módulo Motif Ranker para mejorar la predicción de DDI.

    Principales resultados:

    • Demostró que SimMotifPro se alinea con los límites teóricos superiores derivados, validando la aplicabilidad general de la teoría propuesta.
    • Logró un rendimiento de vanguardia en múltiples puntos de referencia para la predicción de DDI, mostrando la eficacia del enfoque basado en motivos.

    Conclusiones:

    • El número de tokens impacta significativamente el rendimiento del modelo MRL, y los conocimientos teóricos guían el desarrollo de estrategias efectivas de incrustación molecular.
    • SimMotifPro ofrece una solución robusta y eficiente para la predicción de DDI, destacando la importancia de las representaciones basadas en motivos y las arquitecturas GNN avanzadas.