ArticleMolecular cancer2026
Increased mRNA translation delays tumour initiation and exposes a therapeutic vulnerability in lung cancer.
Article in Molecular cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAlthough inhibitors of mRNA translation are being evaluated as anti-cancer agents, the dynamics of protein synthesis throughout tumour progression are still poorly understood. Here we assess how alterations in mRNA translation during early tumorigenesis affect tumour development in KRAS-driven lung adenocarcinoma (LuAd).
methodsWe deployed autochthonous mouse models of LuAd driven by oncogenic KRAS
resultsDeletion of the mRNA-translation repressor, eIF4A2 in KRAS-driven LuAd leads to a dysregulated protein synthesis landscape characterised by a strongly upregulated secretome, enlarged secretory compartments, increased oxidative metabolism and acquisition of senescence-like characteristics. Paradoxically, this overdriven secretory protein synthesis landscape delays tumorigenesis and leads to the appearance of clusters of non-proliferative, p21-positive KRAS
conclusionsOur study highlights that restraint of mRNA translation by eIF4A2 is critical in the early-stages of KRAS-driven LuAd to allow bypass of oncogene-induced senescence and tumour progression. Importantly, because tumours with dysregulated mRNA translation rely heavily on MAP-kinase signalling they are exquisitely sensitive to MEK inhibition, and this indicates the possibility that low expression of eIF4A2 could be used to identify potential responders to MEK inhibitors in clinical trials.
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