Abstract
Non-small cell lung cancer (NSCLC) remains a highly lethal disease, with a lack of fully established biomarkers and therapies. Circular RNAs (circRNAs) have emerged as powerful regulators of gene expression in multiple cancers. The role of circRNAs in NSCLC progression is still not well understood. In this study, GEO database analysis and qRT-PCR results revealed that hsa_circ_0048764 (circ_0048764) was overexpressed in NSCLC tissues and associated with poorer overall survival in patients with NSCLC. Functional assays demonstrated that silencing circ_0048764 inhibited NSCLC cell proliferation and metastasis. Bioinformatics analysis identified miR-1178-3p as having complementary binding sites with circ_0048764, a finding further validated by the dual-luciferase reporter assay. Additionally, predictions from the Starbase3.0 database, along with cellular experiments, revealed that miR-1178-3p regulates HMGA1 expression in NSCLC. Taken together, our findings suggest that circ_0048764 promotes NSCLC progression by enhancing HMGA1 expression through sponging miR-1178-3p, offering potential therapeutic targets for NSCLC treatment.
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