Selection of neural differentiation-specific genes by comparing profiles of random differentiation

Su Lee Min, Dae Hyun Jun, Chang Il Hwang, Soo Park Seung, Jason Jongho Kang, Hyun Seok Park, Jihoon Kim, Han Kim Ju, Jeong Sun Seo, Woong Yang Park

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


Differentiation of embryonic stem cells (ESCs) into neurons requires a high level of transcriptional regulation. To further understand the transcriptional regulation of neural differentiation of ESCs, we used oligonucleotide microarray to examine the gene expressions of the guided differentiation (GD) model for dopaminergic (DA) neurons from mouse ESCs. We also determined the gene expression profiles of the random differentiation (RD) model of mouse ESCs into embryoid bodies. From K-means clustering analysis using the expression patterns of the two models, most of the genes (1,282 of 1,884 genes [68.0%]) overlapped in their expression patterns. Six hundred twenty-two differentially expressed genes (DEGs) from the GD model by random variance F-test were classified by their critical molecular functions in neurogenesis and DNA replication (Gene Ontology analysis). However, 400 genes among GD-DEGs (64.3%) showed a high correlation with RD in Spearman's correlation analysis (Spearman's coefficient ps ≥ .6). The genes showing marginal correlation (-.4 < p s < .6) were present in the early stages of differentiation of both GD and RD, which were non-specific to brain development. Finally, we distinguished 66 GD-specific genes based on ps ≤ -.4, the molecular functions of which were related mainly to vesicle formation, neurogenesis, and transcription factors. From among these GD-specific genes, we confirmed the expression of Serpini1 and Rab33a in P19 differentiation models and adult brains. From these results, we identified the specific genes required for neural differentiation by comparing gene expressions of GD with RD; these would potentially be the highly specific candidate genes necessary for differentiation of DA neurons.

Original languageEnglish
Pages (from-to)1946-1955
Number of pages10
JournalStem Cells
Issue number8
StatePublished - Aug 2006


  • Embryonic stem cells
  • Microarray
  • Neural differentiation
  • Random differentiation
  • Spearman's correlation


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