RBM38 induces SIRT1 expression during hypoxia in non-small cell lung cancer cells by suppressing MIR34A expression.

OBJECTIVE:The study is to research how miR-34-SIRT1 is regulated during hypoxia in lung cancer cells. RESULTS:Analysis of publicly available datasets from patients with NSCLC did not reveal significant genomic alterations in RBM38, SIRT1, HIF1A, MIR34A, MIR34B, and MIR34C, but expectedly revealed alterations in TP53. Overall survival in NSCLC patients with or without alterations in these genes was not significantly different. When expanded to include all lung cancer patients, overall survival was significantly lower in patients with genomic alterations in these genes. CONCLUSIONS:Cumulatively, our results reveal a novel mechanism of RBM38-mediated regulation of the HIF1A/miR-34a/SIRT1/p53 axis under hypoxia in NSCLC cells.

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