Fig. 4: Analysis of the correlation between N1-ICD and GSK3β inactivation levels in CLL cells.

Left, the expression of N1-ICD, pS9-GSK3β used as a marker of GSK3β inactivation status, total GSK3β, and GAPDH used as a loading control, was examined by Western blot analysis (n = 30). Four representative samples are shown. Right, quantification of N1-ICD bands, normalized to GAPDH levels, and of pS9-GSK3β bands normalized to total GSK3β levels, was performed by densitometric analysis. Correlation between N1-ICD and pS9-GSK3β expression values was assessed by using the Spearman’s correlation coefficient (r). P < 0.0001.