PUBLICATION

APC mutant zebrafish uncover a changing temporal requirement for wnt signaling in liver development

Authors
Goessling, W., North, T.E., Lord, A.M., Ceol, C., Lee, S., Weidinger, G., Bourque, C., Strijbosch, R., Haramis, A.P., Puder, M., Clevers, H., Moon, R.T., and Zon, L.I.
ID
ZDB-PUB-080701-3
Date
2008
Source
Developmental Biology   320(1): 161-174 (Journal)
Registered Authors
Bourque, Caitlin, Ceol, Craig, Clevers, Hans, Goessling, Wolfram, Haramis, Anna-Pavlina, Lord, Allegra, Moon, Randall T., North, Trista, Weidinger, Gilbert, Zon, Leonard I.
Keywords
wnt, Endoderm, Liver, Regeneration, APC, Zebrafish, β-catenin
MeSH Terms
  • beta Catenin/metabolism
  • Apoptosis
  • Endoderm/cytology
  • Endoderm/embryology
  • Cell Proliferation
  • Stem Cells/cytology
  • Liver/cytology
  • Liver/embryology*
  • Mutation/genetics*
  • Hepatectomy
  • Phenotype
  • Adenomatous Polyposis Coli Protein/metabolism*
  • Cell Lineage
  • Wnt Proteins/metabolism*
  • Zebrafish/embryology*
  • Signal Transduction*
  • Body Patterning
  • Embryo, Nonmammalian/embryology
  • Embryo, Nonmammalian/metabolism
  • Animals
  • Liver Regeneration
  • Hepatocytes/cytology
  • Time Factors
(all 23)
PubMed
18585699 Full text @ Dev. Biol.
Abstract
Developmental signaling pathways hold the keys to unlocking the promise of adult tissue regeneration, and to inhibiting carcinogenesis. Patients with mutations in the Adenomatous Polyposis Coli (APC) gene are at increased risk of developing hepatoblastoma, an embryonal form of liver cancer, suggesting that Wnt affects hepatic progenitor cells. To elucidate the role of APC loss and enhanced Wnt activity in liver development, we examined APC mutant and wnt inducible transgenic zebrafish. APC(+/-) embryos developed enlarged livers through biased induction of hepatic gene programs and increased proliferation. Conversely, APC(-/-) embryos formed no livers. Blastula transplantations determined that the effects of APC loss were cell autonomous. Induction of wnt modulators confirmed biphasic consequences of wnt activation: endodermal pattern formation and gene expression required suppression of wnt signaling in early somitogenesis; later, increased wnt activity altered endodermal fate by enhancing liver growth at the expense of pancreas formation; these effects persisted into the larval stage. In adult APC(+/-) zebrafish, increased wnt activity significantly accelerated liver regeneration after partial hepatectomy. Similarly, liver regeneration was significantly enhanced in APC(Min/+) mice, indicating the conserved effect of Wnt pathway activation in liver regeneration across vertebrate species. These studies reveal an important and time-dependent role for wnt signaling during liver development and regeneration.
Genes / Markers
Figures
Figure Gallery (15 images) / 2
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Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
No data available
Sequence Targeting Reagents
Target Reagent Reagent Type
ctnnb1MO1-ctnnb1MRPHLNO
1 - 1 of 1
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Fish
Antibodies
Orthology
Engineered Foreign Genes
Marker Marker Type Name
DsRedEFGDsRed
EGFPEFGEGFP
GFPEFGGFP
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Mapping
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Citation
Goessling, W., North, T.E., Lord, A.M., Ceol, C., Lee, S., Weidinger, G., Bourque, C., Strijbosch, R., Haramis, A.P., Puder, M., Clevers, H., Moon, R.T., and Zon, L.I. (2008) APC mutant zebrafish uncover a changing temporal requirement for wnt signaling in liver development. Developmental Biology. 320(1):161-174.