SENP3 inhibition suppresses hepatocellular carcinoma progression and improves the efficacy of anti-PD-1 immunotherapy.

ABSTRACT: The importance of SUMOylation in tumorigenesis has received increasing attention, and research on therapeutic agents targeting this pathway has progressed. However, the potential function of SUMOylation during hepatocellular carcinoma (HCC) progression and the underlying molecular mechanisms remain unclear. Here, we identified that SUMO-Specific Peptidase 3 (SENP3) was upregulated in HCC tissues and correlated with a poor prognosis. Multiple functional experiments demonstrated that SENP3 promotes the malignant phenotype of HCC cells. Mechanistically, SENP3 deSUMOylates RACK1 and subsequently increases its stability and interaction with PKCβII, thereby promoting eIF4E phosphorylation and translation of oncogenes, including Bcl2, Snail and Cyclin D1. Additionally, tumor-intrinsic SENP3 promo

SUBMITTER: Wang P 

PROVIDER: S-EPMC12089275 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature