Archives of Toxicology

, Volume 85, Issue 4, pp 293–304 | Cite as

Ethanol-induced small heat shock protein genes in the differentiation of mouse embryonic neural stem cells

  • Mi Ran Choi
  • Kyoung Hwa Jung
  • Ji Hyun Park
  • Nando Dulal Das
  • Mi Kyung Chung
  • Ihn Geun Choi
  • Boung Chul Lee
  • Kyoung Sun Park
  • Young Gyu Chai
Toxicogenomics

Abstract

Neural stem cells (NSCs) of the neuroepithelium differentiate into one of three central nervous system (CNS) cell lineages: neurons, astrocytes, or oligodendrocytes. In this study, the differentiation potential of NSCs from the forebrain of embryonic day 15 (E15) mouse embryos was analyzed using immunocytochemistry. NSCs were differentiated early in the presence or absence of ethanol (50 mM), and gene expression patterns among NSCs, differentiated cells and ethanol-treated differentiated cells were assessed by microarray and real-time PCR analysis. Genes that were up-regulated in differentiated cells both in the presence and in the absence of ethanol when compared to NSCs were related to the Wnt signaling pathway, including Ctnna1, Wnt5a, Wnt5b, Wnt7a, Fzd3, and Fzd2; genes related to cell adhesion, including Cadm1, Ncam1, and Ncam2; and genes encoding small heat shock proteins, including HspB2, HspB7, and HspB8. In particular, the expression levels of HspB2 and HspB7 were elevated in ethanol-treated differentiated cells compared to non-treated differentiated cells. The gene expression patterns of various heat shock transcription factors (HSFs), proteins that regulate the transcription of heat shock genes, were also analyzed. The expression levels of HSF2 and HSF5 increased in differentiated cells in the presence and absence of ethanol when compared to NSCs. Of these two genes, HSF5 demonstrated an enhanced up-regulation, particularly in ethanol-treated differentiated cells compared to cells that were differentiated in the absence of ethanol. These results imply that HspB2 and HspB7, which are small heat shock proteins with tissue-restricted expression profiles, might be up-regulated by ethanol during the short-term differentiation of NSCs.

Keywords

Differentiation Ethanol Heat shock transcription factor Microarray Neural stem cells Small heat shock protein 

Supplementary material

204_2010_591_MOESM1_ESM.doc (201 kb)
Supplementary material 1 (DOC 201 kb)
204_2010_591_MOESM2_ESM.doc (151 kb)
Supplementary material 2 (DOC 151 kb)

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Mi Ran Choi
    • 1
  • Kyoung Hwa Jung
    • 1
  • Ji Hyun Park
    • 1
  • Nando Dulal Das
    • 1
  • Mi Kyung Chung
    • 2
  • Ihn Geun Choi
    • 3
  • Boung Chul Lee
    • 3
  • Kyoung Sun Park
    • 4
  • Young Gyu Chai
    • 1
  1. 1.Division of Molecular and Life SciencesHanyang UniversityAnsanRepublic of Korea
  2. 2.Fertility Center of CHA General HospitalCHA Research InstituteSeoulKorea
  3. 3.Department of Neuropsychiatry, College of MedicineHallym UniversitySeoulKorea
  4. 4.Department of Physiology, College of MedicineSeoul National UniversitySeoulKorea

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