Change of morphology and cytoskeletal protein gene expression during dibutyryl cAMP-induced differentiation in C6 glioma cells

Weiwei Hu, Takeshi Onuma, Naoko Birukawa, Masashi Abe, Etsuro Ito, Zhong Chen, Akihisa Urano

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Elevation of the intracellular cAMP level induces morphological changes of astrocyte-like differentiation in C6 glioma cells. Such changes may be accompanied with expression of cytoskeletal protein genes. We therefore analyzed morphological changes after a treatment with dibutyryl cAMP (dbcAMP) and then assessed the expression of cytoskeletal protein genes by a quantitative real-time polymerase chain reaction. The cell number remained unaltered upon incubation with 1 mM dbcAMP in medium supplemented with 0.1% fetal bovine serum (FBS), whereas the number and lengths of processes increased, when compared with those of cells incubated in medium supplemented with 0.1% or 10% FBS only. The amounts of β-actin, γ-actin, and β-tubulin mRNAs in C6 cells, but not α-tubulin mRNA, increased during the early proliferation in DMEM containing 10% FBS. The expression of cytoskeletal protein genes decreased when incubated with 0.1% FBS or 1 mM dbcAMP in 0.1% FBS, compared with those of cells cultured in 10% FBS. These results indicated that, during the early proliferation in normal culture condition, the expression of cytoskeletal protein genes in C6 cells, except α-tubulin, increased, while in differentiating or differentiated C6 glioma cells, cAMP-induced morphological changes were not accompanied with elevation of gene expression for cytoskeletal proteins, such as actin and tubulin.

Original languageEnglish
Pages (from-to)519-528
Number of pages10
JournalCellular and Molecular Neurobiology
Volume28
Issue number4
DOIs
Publication statusPublished - 2008 Jun 1
Externally publishedYes

Keywords

  • Actin
  • C6 glioma cell
  • Cytoskeleton
  • Differentiation
  • Gene expression
  • Morphology
  • Tubulin
  • cAMP

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience
  • Cell Biology

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