Increased spermine oxidase (SMO) activity as a novel differentiation marker of myogenic C2C12 cells

Manuela Cervelli, Emiliano Fratini, Roberto Amendola, Marzia Bianchi, Emanuela Signori, Elisabetta Ferraro, Antonella Lisi, Rodolfo Federico, Lucia Marcocci, Paolo Mariottini

Research output: Contribution to journalArticlepeer-review

Abstract

Spermine oxidase (SMO) is a FAD-containing enzyme involved in animal cell polyamines (PA) homeostasis, selectively active on spermine and producing H2O2, spermidine, and the 3-aminopropanal. In the present study, we have examined the SMO gene expression during the mouse myoblast C2C12 cell differentiation induced with two different stimuli by RT-PCR analysis, polysome-mRNP distribution and enzyme activity. SMO transcript accumulation and enzymatic activity increases during C2C12 cell differentiation and correlates with the decrease of spermine content. Many proteins are highly regulated during the phenotypic conversion of rapidly dividing C2C12 myoblasts into fully differentiated post-mitotic myotubes. The SMO gene induction represents a novel and additional marker of C2C12 cell differentiation. The sub-cellular localization of the SMOα and SMOμ splice variants is not involved in the differentiation processes. Nuclear localization of only the SMOμ protein was confirmed.

Original languageEnglish
Pages (from-to)934-944
Number of pages11
JournalInternational Journal of Biochemistry and Cell Biology
Volume41
Issue number4
DOIs
Publication statusPublished - Apr 2009

Keywords

  • C2C12 muscle cells
  • Cell differentiation
  • Polyamines
  • Spermine oxidase

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology

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