RCAN1 and neuroblastoma: To examine the expression of RCAN1.1 and RCAN1.4 in neuronal and glial cells and to elucidate the molecular mechanism underlying the cell specific expression of RCAN1.1 and RCAN1.4, we transfected the two RCAN1 promoter constructs pRCAN1Luc-A and pDE4Luc into rodent glial C6 and neuroblastoma N2A cells.