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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.
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.
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