PTEN and liver cancer: Our present findings clearly demonstrate that overexpressed CUDR cooperates to overexpressed CyclinD1 or PTEN depletion to accelerate liver cancer stem cells, liver stem cells malignant transformation and growth in vitro and in vivo. The synergetic effect of CUDR, CyclinD1 and PTEN depletion is partly based on the upregulation of C-myc and TERT.