RGS5 and neuroblastoma: RGS5 mRNA down regulation following miR-17∼92 induction in the SHEP neuroblastoma cell line (SHEP-TR-miR-17∼92; [12]) is in keeping with the above described direct interaction between two members of the miR-17∼92 cluster, i.e. miR-20a and miR-92a and the 3′UTR of RGS5 (fold change = 1.53).