Unknown,Transcriptomics,Genomics,Proteomics

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Transcription profiling of mouse pancreas at embryonic days 14.5 and 16.5 from animals lacking beta-catenin, a mediator of Wnt signaling and a component of the cadherin-catenin epithelial adhesion complex


ABSTRACT: Beta-catenin is an essential mediator of canonical Wnt signaling and a central component of the cadherin-catenin epithelial adhesion complex. Dysregulation of beta-catenin expression has been described in pancreatic neoplasia. Newly published studies have suggested that beta-catenin is critical for normal pancreatic development although these reports reached somewhat different conclusions. In addition, the molecular mechanisms by which loss of beta-catenin affects pancreas development are not well understood. The goals of this study then were; 1] to further investigate the role of beta-catenin in pancreatic development using a conditional knockout approach and 2] to identify possible mechanisms by which loss of beta-catenin disrupts pancreatic development. A Pdx1-cre mouse line was used to delete a floxed beta-catenin allele specifically in the developing pancreas, and embryonic pancreata were studied by immunohistochemistry and microarray analysis. Experiment Overall Design: Parameter: embryonic pancreas from wild type and Pdx1Cre/+; beta-cateninflox/flox Experiment Overall Design: Sample type: RNA Experiment Overall Design: Source name: Embryonic day 14.6 and 16.5 pancreas Experiment Overall Design: Organism: Mus Musculus Experiment Overall Design: Strain: Derived from an intercross of Pdx1Cre/+ ; beta-cateninflox/+ mice. Experiment Overall Design: Extracted molecule:Total RNA Experiment Overall Design: In the study, we hybridized RNA from Embryonic day 14.6 and 16.5 pancreas of wild type (WT) control and Pdx1Cre/+; beta-cateninflox/flox beta-catenin null in the pancreas) embryonic pancreas to Affymetrix MOE430 2.0 GeneChip® arrays containing 45,101 well characterized mouse genes/ESTs.

ORGANISM(S): Mus musculus

SUBMITTER: Bruce Aronow 

PROVIDER: E-GEOD-7430 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Wnt/beta-catenin signaling is required for development of the exocrine pancreas.

Wells James M JM   Esni Farzad F   Boivin Gregory P GP   Aronow Bruce J BJ   Stuart William W   Combs Chelsea C   Sklenka Angela A   Leach Steven D SD   Lowy Andrew M AM  

BMC developmental biology 20070112


<h4>Background</h4>Beta-catenin is an essential mediator of canonical Wnt signaling and a central component of the cadherin-catenin epithelial adhesion complex. Dysregulation of beta-catenin expression has been described in pancreatic neoplasia. Newly published studies have suggested that beta-catenin is critical for normal pancreatic development although these reports reached somewhat different conclusions. In addition, the molecular mechanisms by which loss of beta-catenin affects pancreas dev  ...[more]

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