In line with these results, we also found that SH-SYS5 human neuroblastoma cells transfected with RACK1DE-his-myc and RACK1WT-his-myc expressed more PSD-95 protein compared to controls, indicating that the increase of PSD-95 density corresponded to an increase of its protein level (Supplemental Figure S1A). Here, DLG4 is linked to neuroblastoma.