NUMB phosphorylation destabilizes p53 and promotes self‐renewal of tumor‐initiating cells by a NANOG‐dependent mechanism in liver cancer
Hifzur R. Siddique, Douglas E. Feldman, Chia‐Lin Chen, Vasu Punj, Hiroshi Tokumitsu, Keigo Machida – 14 July 2015 – Stem cell populations are maintained through self‐renewing divisions in which one daughter cell commits to a particular fate whereas the other retains the multipotent characteristics of its parent. The NUMB, a tumor suppressor, in conjunction with another tumor‐suppressor protein, p53, preserves this property and acts as a barrier against deregulated expansion of tumor‐associated stem cells.