Video Experimental Relacionado
Updated: Feb 26, 2026

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An Oncogenic Hepatocyte-Induced Orthotopic Mouse Model of Hepatocellular Cancer Arising in the Setting of Hepatic Inflammation and Fibrosis
Published on: September 12, 2019
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VSIG4 restringe el control del carcinoma hepatocelular al suprimir la inmunidad de las células T CD8+ específicas del
Jinglong Guo1, Siddheshvar Bhela1, Monica Sharma1
1Genentech United States.
Cancer immunology research
|February 25, 2026
Resumen
La proteína que contiene el dominio de inmunoglobulina y el conjunto V (VSIG4) es una nueva diana en el carcinoma hepatocelular (CHC). La inhibición de VSIG4 mejora la inmunidad antitumoral y la eficacia de la inmunoterapia en modelos de CHC.
Área de la Ciencia:
- Inmunología
- Oncología
- Biología Celular
Sus antecedentes:
- Las inmunoterapias han transformado el tratamiento del carcinoma hepatocelular (CHC).
- Las limitadas tasas de respuesta exigen nuevas dianas terapéuticas para el CHC.
Objetivo del estudio:
- Investigar el papel de VSIG4 (que contiene el dominio de inmunoglobulina y el conjunto V 4) en el CHC.
- Evaluar VSIG4 como una posible diana terapéutica para las inmunoterapias del CHC.
Principales métodos:
- Se evaluó la expresión de VSIG4 en tejidos de CHC de ratón y humanos.
- Se utilizaron modelos de CHC autoinflamatorios para estudiar los efectos de la deficiencia de VSIG4.
- Se realizaron estudios ex vivo y in vitro para analizar el mecanismo de supresión de células T de VSIG4.
Principales resultados:
- La alta expresión de VSIG4 en el CHC se correlaciona con un mal pronóstico del paciente.
- La deficiencia de VSIG4 en ratones mejoró la actividad de las células T CD8+ y el control del tumor.
- Se encontró que los macrófagos VSIG4+ suprimen la función de las células T CD8+ en el microambiente tumoral del CHC.
- Las terapias combinadas (anti-PD-L1 y anti-VEGF) mostraron una eficacia mejorada en modelos deficientes de VSIG4.
Conclusiones:
- VSIG4 es expresado predominantemente por macrófagos asociados a tumores en el CHC.
- VSIG4 actúa como un inhibidor directo de las respuestas de las células T antitumorales en el CHC.
- La targeting de VSIG4 presenta una estrategia prometedora para mejorar las inmunoterapias del CHC.
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