La proteína de unión de orgánulos PDZD8 regula la maduración endolisómica y la señalización TLR9-NF-κB en la lesión renal aguda inducida por el cisplatino.
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Ver abstracta en PubMed
Resumen
Este resumen es generado por máquina.La proteína PDZD8 es crucial para la reparación de la lesión renal al regular la función del endolisosoma y la señalización del receptor Toll-like 9 (TLR9). Su ausencia reduce la inflamación y la gravedad de la lesión renal aguda (IRA).
Área De La Ciencia
- Biología celular
- Inmunología
- Nefrología
Sus Antecedentes
- La lesión renal aguda (IRA) implica inflamación impulsada por el estrés de los organelos, pero el papel de la comunicación entre los organelos no está claro.
- La proteína PDZD8 enlaza el retículo endoplasmático (ER) y los endolisosomas, vital para la maduración de los endolisosomas y la activación del receptor tipo Toll 9 (TLR9).
Objetivo Del Estudio
- Investigar el papel de PDZD8 en la vía TLR9-NF-κB durante la IAC.
- Determinar si PDZD8 tiene un impacto en la gravedad y la inflamación de la IAC inducida por cisplatino.
Principales Métodos
- Se utilizó el knockout Pdzd8 (KO) en ratones y el knockdown in vitro en células tubulares proximales humanas (PTC).
- Se evaluó la gravedad de la IAC, la activación de la vía NF-κB y la función endolisómica (maduración, acidificación).
Principales Resultados
- Los ratones Pdzd8 KO mostraron una reducción de la severidad de la IAC inducida por cisplatino y de la activación de la vía NF-κB.
- La reducción de la PDZD8 en las PTCs alteró la maduración y acidificación endolisosomales, impidiendo la translocación de TLR9 y la señalización de NF-κB.
- La morfología mitocondrial y la fuga de ADNmt no se vieron afectadas.
Conclusiones
- PDZD8 es esencial para la homeostasis endolisosómica y la regulación de la vía TLR9-NF-κB en la IAC.
- Dirigirse a PDZD8 puede ofrecer una estrategia terapéutica para la IAC mediante la modulación de las respuestas inflamatorias.
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