C. N2a cells transfected with Atoh1-GST plasmids were treated with DMSO(Control), Palbociclib (Palb) or Palb and 10 uM MG132 (MG132) for 6hrs before harvest. Lysates of N2a were subjected to immunoblotting with anti-Atoh1 or β-actin. Quantification of relative ATOH1 to the β-ACTIN (right panel). Tukey-Kramer test was performed between Control, Palb, MG132. Bars and error bars are representing as Mean ± SEM from three trials of each condition. ***p < 0.001, *p < 0.05, N.S.: Not Significant. Three slots of each experimental condition represent the three biological replicants of each condition. 