Fig. 5. MYH9 mediates HBX-induced GSK3β ubiquitination and degradation.
a Western blotting and quantification analyses of the effect of MYH9 depletion on GSK3β, β-catenin, APC, and AXIN1 stability in HCCLM3 cells incubated with cycloheximide or MG132 at the indicated time points. b Western blotting and quantification analyses of the impact of HBX and MYH9 on GSK3β stability in HCCLM3 cells incubated with cycloheximide at the indicated time points. c Coimmunoprecipitation analyses were conducted to identify the function of HBX and MYH9 on the interplay between MYH9, TRAF6, ubiquitin, β-catenin, and GSK3β in HCCLM3 and PLC/PRF/5 cells incubated with MG132. d Coimmunoprecipitation analyses of the interaction between TRAF6, ubiquitin, and wild-type GSK3β or mutant GSK3β in HCCLM3 cells treated with MG132. e Western blot analyses were used to assess the impact of ubiquitin on GSK3β expression levels in ubiquitin-overexpressing HCCLM3 cells and the corresponding control cells.