Figure 3. Altered gene expression pattern in LLE mice. (A) Principal component analysis (PCA) was performed on differentially expressed genes from the liver of 12-month old LLE mice. (n=6-8 for each group). (B) Volcano plot comparison of genes induced in LLE mice versus WT mice. (C) Gene ontology terms and KEGG pathway clustering of LLE mice. (D) Heatmap representation of genes involved in carbohydrate metabolism, lipid/fatty acid metabolism, NF-kappa B signaling, insulin signaling and AMPK signaling. (E) Protein-protein interaction network of differentially expressed genes of LLE mice.