Figure 4. MELK is positively correlated with the Notch and Wnt signalling pathways. The essential enriched pathways of the MELK-correlated genes classified by KEGG analysis through DAVID (A and B). SCC4 (C) and Fadu (D) cells were transfected by shMELK, and Wnt/Notch signalling pathway-related gene expression was measured. **P < 0.01.