Fig. 9: Schematic diagram of the PSMD14-CARM1-FERMT1 axis in HCC.

PSMD14-mediated deubiquitination upregulates CARM1 expression, which in turn transcriptionally activates its downstream target FERMT1 through histone H3R17me2. This PSMD14-CARM1-FERMT1 signaling axis significantly promotes HCC growth and metastasis. Pharmacological inhibition of CARM1 using SGC2085 effectively suppresses the malignant phenotypes of HCC cells, suggesting a potential therapeutic strategy for HCC treatment.