Exosome-derived hsa_circ_0007132 promotes lenvatinib resistance by inhibiting the ubiquitin-mediated degradation of NONO. (PubMed, Noncoding RNA Res)
Mechanistically, hsa_circ_0007132 interacts with the NONO protein, impairing its ubiquitination and leading to increased stability and upregulation of NONO expression, thereby enhancing NONO-mediated nuclear export of ZEB1 mRNA and elevating ZEB1 protein expression, which ultimately contributes to LR. In summary, our findings unveil a critical mechanism through which HCC mediates tumor progression and LR via exosomal hsa_circ_0007132, while also emphasizing that targeting NONO may represent a promising therapeutic strategy to overcome LR.