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Steroid treatment makes glioblastoma tumors dependent on methionine, and low-methionine diets slowed tumor growth in lab models.
Scientists have discovered a metabolic vulnerability in glioblastoma, a deadly brain cancer, linked to how tumor cells process vitamin B3 and methionine.
Research involving institutions from five European countries, including the Cancer Research UK Scotland Institute, found that common steroid treatments alter cancer cell metabolism, creating a dependency on methionine.
In preclinical models, combining steroids with a low-methionine diet slowed tumor growth.
The findings, published in Science Advances, suggest dietary interventions could enhance current therapies, offering a potential new strategy to slow disease progression.
Experts call the discovery promising but note human trials are needed to confirm benefits.
El tratamiento con esteroides hace que los tumores de glioblastoma sean dependientes de la metionina, y las dietas bajas en metionina ralentizaron el crecimiento del tumor en modelos de laboratorio.