Fig. 3. HES5wt but not HES5mut mediates extensive transcriptional repression.
a Volcano plots showing the gene expression profiles of control (left), HES5wt-inducible (middle), or HES5mut-inducible (right) Hep3B cell lines with or without 2 µg/ml Dox treatment. The x-axis specifies the log2 fold changes and the y-axis specifies the negative log10 of the limma t-test p-values. The horizontal line indicates p = 0.001. Among genes with the highest negative fold change in HES5wt-expressing cells are HES1, ODC1, and LDHA, which are depicted by red dots in the middle panel. Accordingly, protein levels of HES1 and N1ICD (b) or ODC1 and LDHA (c) were analyzed by western blotting upon HES5wt or HES5mut expression in Hep3B cells. One representative experiment out of three with similar outcome is shown and β-actin served as loading control. d Quantification of protein levels of HES1, NOTCH1, ODC1, and LDHA in Hep3B cells following HES5wt or HES5mut induction obtained from three independent western blotting experiments. *Mann–Whitney U-test p < 0.05.