ArticleCellular oncology (Dordrecht, Netherlands)2026
RNF114-PACSIN3 signaling axis promotes hepatocellular carcinoma progression by enhancing GLUT1 membrane retention and glucose uptake.
Article in Cellular oncology (Dordrecht, Netherlands), 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
purposeHepatocellular carcinoma (HCC) is a leading cause of cancer-related death worldwide, with current therapies often limited by significant drug resistance. Owing to the Warburg effect, targeting cancer-specific metabolic vulnerabilities is a promising therapeutic strategy. This study aims to investigate the role of RNF114 in HCC progression and its regulatory mechanism, as well as its clinical translational potential as a therapeutic target.
methodsWe evaluated the clinical significance of RNF114 using tissue microarrays and database analysis. RNF114 function in promoting HCC progression by regulating glucose uptake was investigated using knockdown experiments in cell lines and subcutaneous xenograft models. Furthermore, a therapeutic xenograft model was employed to assess the potential of RNF114 knockdown in overcoming Sorafenib resistance.
resultsRNF114 was highly expressed in HCC and correlated with poor prognosis. Knockdown of RNF114 significantly suppressed HCC cell proliferation, migration, invasion, and glycolysis. Co-immunoprecipitation identified PACSIN3 as a key substrate of RNF114. RNF114 interacted with the SH3 domain of PACSIN3, promoting its ubiquitination and proteasomal degradation. Subcellular fractionation revealed that the F-BAR domain of PACSIN3 facilitated GLUT1 vesicular trafficking. Consequently, RNF114 impaired this process, leading to increased plasma membrane retention of GLUT1 and enhanced glycolytic flux. Consistently, in both HCC cells and subcutaneous xenograft models, RNF114 knockdown sensitized tumors to Sorafenib treatment.
conclusionsCollectively, our findings reveal that the RNF114-PACSIN3-GLUT1 axis regulates glucose uptake and metabolic reprogramming in HCC, thereby promoting tumor progression and contributing to therapy resistance. Targeting this signaling axis provides a novel insight into metabolic therapy for HCC.
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