1. From the Department of Medicine and Clinical Science, Graduate School of Medical Sciences (N.M., T.O., Y.K., K.G., H.N., Y.H., K.M., T.K.), Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation (Y.N.), and Research Center for Nucleotide Pool (Y.N.), Kyushu University, Fukuoka, Japan.