ArticleCellular and molecular life sciences : CMLS2026
Inhibition of ferroptosis via SLC25A39-NRF2 axis drives Osimertinib resistance in lung adenocarcinoma.
Article in Cellular and molecular life sciences : CMLS, 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
objectiveOvercoming resistance to Osimertinib remains a major clinical challenge in lung adenocarcinoma (LUAD). The molecular mechanisms driving this resistance are still not fully understood.
methodsIntegrated bioinformatics analysis and functional assays were performed to investigate the role of SLC25A39 in LUAD progression and drug resistance. Mechanistic studies were conducted using co-immunoprecipitation and rescue experiments. Osimertinib-resistant cell models and xenograft assays were used to evaluate therapeutic responses.
resultsSLC25A39 was significantly upregulated in LUAD and correlated with unfavorable patient outcomes. Functional studies showed that SLC25A39 depletion suppressed malignant phenotypes and enhanced ferroptosis, whereas its overexpression produced the opposite effects. Mechanistically, SLC25A39 was found to interact with NRF2 and was associated with increased NRF2 stability and transcriptional activity, leading to enhanced glutathione synthesis and attenuation of lipid peroxidation. Importantly, silencing SLC25A39 sensitized LUAD cells to Osimertinib. Consistent with this, pharmacological induction of ferroptosis using RSL3 markedly enhanced the antitumor effects of Osimertinib in both parental and resistant models, resulting in reduced tumor growth in vitro and in vivo, particularly in SLC25A39-high contexts.
conclusionSLC25A39 promotes LUAD progression and Osimertinib resistance by suppressing ferroptosis via NRF2. Targeting ferroptosis may represent a promising strategy to overcome Osimertinib resistance.
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