CCK-8 and EdU incorporation assays showed that DAP3-KD significantly inhibited cell proliferation and decreased the expression of Ki67 and PCNA in Huh7 and Hep3B cells, while DAP3-OE significantly promoted the proliferation of HCC cells (Fig. 2C–E, Supplementary Fig. S2C). Here, PCNA is linked to hepatocellular carcinoma.