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Vesículas apoptóticas rectifican el desequilibrio óseo-graso senil activando el eje Thy1-ERK-TAZ

Yuhe Jiang¹, Jianqi She^2,3, Zeying Wang¹

¹Department of Prosthodontics, National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Peking University School and Hospital of Stomatology, NMPA Key Laboratory for Dental Materials, Beijing, 100081, China.

Journal of nanobiotechnology

|December 13, 2025

Resumen

Las vesículas apoptóticas (apoVs) derivadas de células madre mesenquimales (MSC) alteran el equilibrio óseo-graso en el envejecimiento, afectando las apoVs. Las apoVs diseñadas enriquecidas con Thy1 restauran la salud ósea y mejoran el metabolismo en modelos de envejecimiento.

Área de la Ciencia:

Ciencia Biomédica
Medicina Regenerativa
Investigación sobre el envejecimiento

Sus antecedentes:

El desequilibrio óseo-graso senil es un problema de salud importante en las poblaciones que envejecen.
Las vesículas apoptóticas (apoVs) derivadas de células madre mesenquimales (MSC) juegan un papel en este desequilibrio.
El envejecimiento afecta la composición y función de las apoVs.

Objetivo del estudio:

Investigar los cambios relacionados con la edad en la heterogeneidad de las apoVs derivadas de MSC.
Desarrollar una estrategia terapéutica para los trastornos metabólicos óseo-grasos relacionados con la edad.
Identificar los mecanismos moleculares clave involucrados en la función de las apoVs.

Principales métodos:

Análisis de la carga proteica de apoVs derivadas de MSC de donantes de edad avanzada.
Validación funcional del papel de Thy1 en la osteogénesis y la adipogénesis.
Diseño de apoVs enriquecidas con Thy1 utilizando clasificación magnética y tecnología de corona proteica.
Estudios in vivo en modelos de ratones de edad avanzada.

Principales resultados:

Las apoVs derivadas de MSC muestran cambios composicionales dependientes de la edad, con niveles decrecientes de Thy1.
Thy1 es crucial para la osteoinducción y anti-adipogénesis mediada por apoV.
Las apoVs diseñadas enriquecidas con Thy1 mejoraron la osteogénesis y suprimieron la adipogénesis a través de la vía Thy1-ERK-TAZ.
El tratamiento con apoVs diseñadas mejoró la masa ósea, redujo la grasa de la médula y corrigió el metabolismo de los lípidos en ratones de edad avanzada.

Conclusiones:

Thy1 sirve como biomarcador funcional para la heterogeneidad de apoVs relacionada con el envejecimiento.
Las apoVs diseñadas enriquecidas con Thy1 ofrecen un enfoque terapéutico escalable para el desequilibrio óseo-graso senil.
La vía Thy1-ERK-TAZ proporciona un objetivo para las intervenciones basadas en vesículas extracelulares contra enfermedades relacionadas con la edad.

Palabras clave:

Vesículas apoptóticas Desequilibrio óseo-graso Células madre mesenquimales Senil Thy1

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