Read all about Steve’s REX1 story in the upcoming issue of Hepatology. In brief, the work describes a critical repressive function of REX1 in maintenance of HCC cells by regulating MKK6 binding and p38 MAPK signaling. REX1 deficiency induced enhancement of p38 MAPK signaling, leading to F-actin reorganization and activation of NRF2-mediated oxidative stress response, which collectively contributed to enhanced stemness and metastatic capabilites of HCC cells.
Luk ST, Ng KY, Zhou L, Tong M, Wong TL, Yu HJ, Lo CM, Man K, Guan XY, Lee TK, Ma S. Deficiency in embryonic stem cell marker REX1 activates MKK6-dependent p38 MAPK signaling to drive hepatocarcinogenesis. Hepatology 2019; accepted