PSME3 promotes glycolysis and migration of gastric cancer cells via regulating the EGFR/c-myc pathway

Abstract

Gastric cancer (GC) is a common malignant tumor that is pernicious to the health of patients. Proteasome activator subunit 3 (PSME3) has been shown to exhibit higher expression and aggravate tumorigenesis in cancer progression. A major finding is that PSME3 is also highly expressed in GC tissues, which results in a worse prognosis. Nevertheless, the regulatory functions of PSME3 in GC progression remain unclear. This study aimed to investigate the impacts of PSME3 and related regulatory pathways on GC progression. From the Gene Expression Profiling Interactive Analysis (GEPIA) database, it was noted that PSME3 expression was up-regulated in GC tissues. Our findings suggested that in GC, PSME3 showed higher expression, resulting in a worse prognosis. Functional experiments revealed that PSME3 accelerates cell growth, migration and abnormal glycolysis in GC. PSME3 stimulates the epidermal growth factor receptor (EGFR)/c-myc pathway. In conclusion, GC cells exhibited higher PSME3 expression, which modulated the EGFR/c-myc pathway to fa