Microarray Analysis Detects Novel Pax3 Downstream Target Genes

C. S.K. Mayanil, David George, Laura Freilich, Erik J. Miljan, Barbara Mania-Farnell, David G. McLone, Eric G. Bremer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

101 Scopus citations


Pax3 is a transcription factor that is required for the development of embryonic neural tube, neural crest, and somatic derivatives. Our previous study (Mayanil, C. S. K., George, D., Mania-Farnell, B., Bremer, C. L., McLone, D. G., and Bremer, E. G. (2000) J. Biol. Chem. 275, 23259-23266) reveals that overexpression of Pax3 in a human medulloblastoma cell line, DAOY, resulted in an up-regulation in α-2,8-polysialyltransferase (STX) gene expression and an increase in polysialic acid on neural cell adhesion molecule. This finding suggests that STX might be a previously undescribed down-stream target of Pax3. Because Pax3 is important in diverse cellular functions during development, we are interested in the identification of additional down-stream targets of Pax3. We utilized oligonucleotide arrays and RNA isolated from stable Pax3 transfectants to identify potential target genes. A total of 270 genes were altered in the Pax3 transfectants as compared with the vector control and parental cell line. An independent analysis by cDNA expression array and real-time quantitative polymerase chain reaction of several genes confirmed the changes observed by the oligonucleotide microarray data. Of the genes that displayed significant changes in expression, several contain paired and homeodomain binding motifs of Pax3 in their promoter regions. Using promoter-luciferase reporter transfection assays and electromobility shift assays, we showed at least one previously undescribed downstream target, STX, to be a biological downstream target of Pax3. Thus we report several previously undescribed candidate genes to be potential downstream targets of Pax3.

Original languageEnglish (US)
Pages (from-to)49299-49309
Number of pages11
JournalJournal of Biological Chemistry
Issue number52
StatePublished - Dec 28 2001

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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