3T3 cell lines stably expressing Pax6 or Pax6(5a): a new tool used for identification of common and isoform specific target genes.

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3T3 cell lines stably expressing Pax6 or Pax6(5a): a new tool used for identification of common and isoform specific target genes.

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dc.contributor.author Kiselev, Yury
dc.contributor.author Eriksen, Tonje Engevik
dc.contributor.author Forsdahl, Siri
dc.contributor.author Nguyen, Lan Huong Thi
dc.contributor.author Mikkola, Ingvild
dc.date.accessioned 2012-04-17T09:54:56Z
dc.date.available 2012-04-17T09:54:56Z
dc.date.issued 2012
dc.description.abstract Pax6 and Pax6(5a) are two isoforms of the evolutionary conserved Pax6 gene often co-expressed in specific stochiometric relationship in the brain and the eye during development. The Pax6(5a) protein differs from Pax6 by having a 14 amino acid insert in the paired domain, causing the two proteins to have different DNA binding specificities. Difference in functions during development is proven by the fact that mutations in the 14 amino acid insertion for Pax6(5a) give a slightly different eye phenotype than the one described for Pax6. Whereas quite many Pax6 target genes have been published during the last years, few Pax6(5a) specific target genes have been reported on. However, target genes identified by Pax6 knockout studies can probably be Pax6(5a) targets as well, since this isoform also will be affected by the knockout. In order to identify new Pax6 target genes, and to try to distinguish between genes regulated by Pax6 and Pax6(5a), we generated FlpIn-3T3 cell lines stably expressing Pax6 or Pax6(5a). RNA was harvested from these cell lines and used in gene expression microarrays where we identified a number of genes differentially regulated by Pax6 and Pax6(5a). A majority of these were associated with the extracellular region. By qPCR we verified that Ncam1, Ngef, Sphk1, Dkk3 and Crtap are Pax6(5a) specific target genes, while Tgfbi, Vegfa, EphB2, Klk8 and Edn1 were confirmed as Pax6 specific target genes. Nbl1, Ngfb and seven genes encoding different glycosyl transferases appeared to be regulated by both. Direct binding to the promoters of Crtap, Ctgf, Edn1, Dkk3, Pdgfb and Ngef was verified by ChIP. Furthermore, a change in morphology of the stably transfected Pax6 and Pax6(5a) cells was observed, and the Pax6 expressing cells were shown to have increased proliferation and migration capacities.
dc.identifier.citation PLoS ONE (2012) 7(2): e31915
dc.identifier.issn 1932-6203
dc.identifier.other FRIDAID 919976
dc.identifier.other doi: 10.1371/journal.pone.0031915
dc.identifier.uri http://hdl.handle.net/10037/4107
dc.identifier.urn URN:NBN:no-uit_munin_3827
dc.language.iso eng
dc.publisher Public Library of Science (PLoS)
dc.subject VDP::Mathematics and natural science: 400::Basic biosciences: 470::Genetics and genomics: 474
dc.subject VDP::Matematikk og Naturvitenskap: 400::Basale biofag: 470::Genetikk og genomikk: 474
dc.title 3T3 cell lines stably expressing Pax6 or Pax6(5a): a new tool used for identification of common and isoform specific target genes.
dc.type Journal article
dc.type Tidsskriftartikkel
dc.type Peer reviewed


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