Somatostatin expression in TS16 mouse brain cultures

Patrizia Corsi, Gianluigi Forloni, Michele Troia, Teresa Lettini, Joseph T. Coyle

Research output: Contribution to journalArticlepeer-review

Abstract

Somatostatin expression in trisomy 16 mouse neuronal cultures has been studied to investigate the effects of the presence of an extra copy of the pre-pro-somatostatin (ppSS) gene on mouse chromosome 16. The immunoreactivity for somatostatin (SS) was considered in mixed cultures of neurons and glia cells and in neuron-enriched cultures as well as that for neuropeptide Y, glutamic acid decarboxylase, and γ-enolase immunoreactivity the genes of which are not present on mouse chromosome 16. ppSS and pre-pro-neuropeptide Y (ppNPY) mRNA expression was evaluated and SS immunoreactivity in neurons analyzed by a morphometrical study. The extra copy of the ppSS gene resulted in a significantly increased level of the transcript in trisomic cultures, whereas the expression of the other neuropeptides did not differ. The absence of glial cells in these cultures reduced the number of SS-positive neurons making their number comparable in the trisomic and control cultures. Thus, in spite of higher expression of the ppSS mRNA in trisomic cultures, the determination of this peptidergic phenotype was influenced by the presence of neuroglial cells.

Original languageEnglish
Pages (from-to)99-111
Number of pages13
JournalJournal of Molecular Neuroscience
Volume10
Issue number2
Publication statusPublished - 1998

Keywords

  • Aneuploidy
  • Gene expression
  • Glial interactions
  • Neuronal culture
  • Somatostatin

ASJC Scopus subject areas

  • Neuroscience(all)
  • Biochemistry
  • Genetics

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