George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi-Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos
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引用次数: 0
Abstract
Acquired resistance to vemurafenib, a BRAFV600E-targeted therapy, remains a major challenge in melanoma. The translation initiation factor eIF6 has been implicated in cancer; however, its role in vemurafenib resistance is poorly understood. We investigated eIF6 using melanoma cell lines with distinct mutational backgrounds. RNA sequencing of a resistant cell line revealed dysregulation of MAPK, PI3K-AKT, metabolic, and ribosome biogenesis pathways together with increased eIF6 expression and alterations in translation-related signaling. Silencing of eIF6 led to reduced proliferation and partially restored vemurafenib sensitivity, while its overexpression increased sensitivity irrespective of BRAF status via mTOR and MAPK modulation. These findings reveal a context-dependent role for eIF6, linking translation regulation to therapeutic response in melanoma.
期刊介绍：
FEBS Letters is one of the world''s leading journals in molecular biology and is renowned both for its quality of content and speed of production. Bringing together the most important developments in the molecular biosciences, FEBS Letters provides an international forum for Minireviews, Research Letters and Hypotheses that merit urgent publication.
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