Abstract
Differential display PCR was used to study the effects of lithium on gene expression. Four candidate genes were isolated and verified by Northern hybridization after 1 week treatment of C6 glioma cells with therapeutically relevant concentrations of LiCl (1 mM). Sequencing analysis revealed three previously unidentified cDNA fragments in addition to a sequence with 99% homology with the cDNA for 2′,3′‐cyclic nucleotide 3′‐phosphodiesterase type II (CNPaseII). Since CNPaseII is important in myelinogenesis and possibly neuronal growth and repair, the present findings suggest that lithium treatment may regulate these processes.

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