Figure 8. Effects of NAP1L5 binding to MYH9 on downstream signaling pathways and cell function in hepatocellular carcinoma. (A) The possible interacting proteins were analyzed by mass spectrometry. Trypsin digestion fragments were detected by mass spectrometry, and B and Y represent N-terminal and C-terminal collision-induced dissociation fragment ions. (B) Co-IP confirmed the combination of NAP1L5 and MYH9. (C) Western blotting showed that the expression of NAP1L5 protein was negatively correlated with that of MYH9 protein. (D) Both NAP1L5 and MYH9 were downregulated in the MHCC97H cell line. Western blotting showed that the phosphorylation levels of AKT and mTOR were lower than those in the NAP1L5-downregulated cell line. (E) A colony formation assay verified the change in the proliferation ability of MHCC97H cells with simultaneous downregulation of NAP1L5 and MYH9. (F) EdU staining verified the change in the proliferation ability of MHCC97H cells with simultaneous downregulation of NAP1L5 and MYH9. (G) A Transwell assay verified the change in the migration and invasion ability of MHCC97H cells with simultaneous downregulation of NAP1L5 and MYH9. *p < 0.05; **p < 0.01; ***p < 0.001.