Differential distribution of calcineurin Aα isoenzyme mRNA's in rat brain

Buttini, M., Limonta, S., Luyten, M. & Boddeke, H., 11-Nov-1993, In : Naunyn-Schmiedeberg's Archives of Pharmacology. 348, 6, p. 679-683 5 p.

Research output: Contribution to journalArticleAcademicpeer-review

Specific antisense oligonucleotide probes for the α isoforms of the catalytic subunit (A-subunit) of calcineurin were prepared and the distribution of Aα1 and Aα2 mRNA's has been studied in rat brain using in situ hybridization histochemistry. Clear regional differences have been observed for the Aα1 and Aα2 isoforms. The predominant form, Aα1, was found to be preferentially expressed in the caudate putamen, the pyramidal cell layer of the hippocampus, specific cortical cell layers, the cerebellar granular cell layer and some other brain areas. On the other hand, the Aα2 isoform, although being generally less abundant than Aα1, gave an intense autoradiography signal in the dentate gyrus of the hippocampus and was the major transcript in the amygdala, the superior and the inferior colliculus, the central gray matter and the reticular formation. These regional differences might reflect specific functions exerted by the two alternatively spliced isoenzymes in the CNS and opens the perspective of interfering with defined calcineurin-dependent signal transduction pathways using isoform-specific compounds.
Original languageEnglish
Pages (from-to)679-683
Number of pages5
JournalNaunyn-Schmiedeberg's Archives of Pharmacology
Issue number6
Publication statusPublished - 11-Nov-1993


  • calineurin, in situ hybridization, oligonucleotide probes, protein serine phosphatase, antisense oligonucleotide, calcineurin, isoenzyme, messenger RNA, oligonucleotide, animal tissue, article, autoradiography, brain region, controlled study, enzyme subunit, histochemistry, male, nonhuman, rat, signal transduction, tissue distribution

ID: 14288296