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Virus de la rabia dirigido a fototeranosticos NIR-II

Qihang Ding¹, Caiqian Wang², Haoran Wang²

¹Department of Chemistry, Korea University, Seoul 02841, Korea.

Journal of the American Chemical Society

|May 2, 2025

Resumen

Los investigadores desarrollaron una nueva sonda nanotheranostic para la rabia. Esta sonda tiene como objetivo el virus de la rabia (RABV), permite la obtención de imágenes y proporciona terapia fotodinámica (PDT) para un uso clínico potencial.

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Área de la Ciencia:

Ingeniería biomédica
Nanotecnología
Enfermedades infecciosas

Sus antecedentes:

La rabia es una enfermedad viral mortal sin tratamientos efectivos.
Las estrategias diagnósticas y terapéuticas actuales para la rabia son limitadas.
La barrera hematoencefálica (BBB) presenta un desafío significativo para el tratamiento de las infecciones del sistema nervioso central.

Objetivo del estudio:

Desarrollar una nueva sonda nanotheranostic para el diagnóstico de la rabia y la terapia.
Para crear una sonda capaz de cruzar la barrera hematoencefálica .
Permitir una orientación precisa del virus de la rabia (RABV) y facilitar la terapia fotodinámica (PDT).

Principales métodos:

Síntesis de un nuevo fluoroforo de poliacetileno orgánico NIR-II (DK).
Autoensamblaje de DK con un soporte de nanopartículas biocompatible y permeable al BBB (N3-PEG2000-R).
Modificación de la superficie de la sonda con un aptámero dirigido a la glicoproteína RABV (RVG) para crear DK@RA-PEG.

Principales resultados:

La sonda nanotheranostic (DK@RA-PEG) efectivamente cruzó el BBB en ratones.
Las imágenes de fluorescencia NIR-II en tiempo real visualizaron la localización de la sonda en el sitio de infección.
La sonda demostró una terapia fotodinámica segura y efectiva mediante la conversión de la luz en energía química sin efectos térmicos.

Conclusiones:

La sonda nanotheranostic desarrollada integra la orientación, la proyección de imagen y la terapia para la rabia.
DK@RA-PEG se muestra prometedor para aplicaciones clínicas en el tratamiento de la rabia.
Este enfoque teránostico ofrece una solución potencial para superar las limitaciones de las actuales intervenciones contra la rabia.