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Lucha por la grasa: tumores glotones y células T hambrientas
Joshua H Goodman1, Anthony W Ferrante2
1Medical Scientist Training Program, Vagelos College of Physicians & Surgeons, Columbia University, New York, New York, USA; Department of Medicine, Naomi Berrie Diabetes Center, Vagelos College of Physicians & Surgeons, Columbia University, New York, New York, USA.
Cell
|December 28, 2020
Resumen
La obesidad empeora el cáncer al alterar la utilización de lípidos en el microambiente tumoral, lo que afecta la inmunidad antitumoral. Este estudio sugiere que las terapias metabólicas pueden mejorar los resultados del tratamiento del cáncer en pacientes obesos.
Área de la Ciencia:
- Inmunología
- Las vías metabólicas
- Biología del cáncer
Sus antecedentes:
- La obesidad es un factor de riesgo conocido para malos resultados de cáncer.
- El microambiente del tumor juega un papel crítico en la progresión del cáncer y la evasión inmune.
- Las alteraciones metabólicas en la obesidad pueden influir en la función de las células inmunes.
Objetivo del estudio:
- Investigar el vínculo entre la utilización de lípidos en el microambiente tumoral y la inmunidad antitumoral.
- Para explorar cómo la obesidad afecta estos procesos.
- Para identificar posibles objetivos metabólicos para la terapia del cáncer.
Principales métodos:
- Utilizó modelos de ratones obesos con tumores.
- Analizado el metabolismo lipídico dentro del microambiente del tumor.
- Se evaluaron las respuestas inmunológicas antitumorales.
Principales resultados:
- Se demostró una correlación directa entre el aumento de la utilización de lípidos en el microambiente tumoral y la supresión de la inmunidad antitumoral en ratones obesos.
- Se han identificado vías metabólicas específicas de los lípidos implicadas en esta supresión inmunológica.
- Mostró cómo la obesidad exacerba estos cambios metabólicos e inmunológicos perjudiciales.
Conclusiones:
- El metabolismo lipídico en el microambiente tumoral es un mediador clave de la inmunidad antitumoral, particularmente en el contexto de la obesidad.
- Dirigirse a estas vías lipídicas específicas ofrece una nueva estrategia metabólica potencial para mejorar la inmunoterapia contra el cáncer en individuos obesos.
- Los hallazgos proporcionan una explicación mecanicista del impacto negativo de la obesidad en el pronóstico del cáncer.
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