Figure 5.
The conservation of GE in various human cells and higher mammals. (A) Integrated analysis of the activity of GE in human IPSC lines. Insulators (red lines) and interactions (green lines) of human iPSCs involving the enhancer and promoter of GLUT1 are displayed at bottom. Binding profiles for OCT4 and H3K27ac of IPSCs are displayed at the top. (B) GE is active in human iPSCs, ectoderm, endoderm, neural progenitor cells (NPCs), mesenchymal stem cells (MSCs), and certain human cancer cells as indicated by the epigenetic marker (H3K27ac) labeled in blue. (C) Fast minimum evolution tree was used to reveal the evolutionary relationship of GE. (D) GE is active in mouse ESCs. The epigenetic signature (H3K27ac and H3K4me1) of GE (blue box) and the binding profiles of SON are conserved in mouse ESCs. The predicted interaction sites between the enhancer and promoter of the Glut1 gene in mouse ESCs are indicated by green boxes. The conserved region of the mouse and human GE is indicated with a red arrowhead