PUBLICATION
Disruption of planar cell polarity activity leads to developmental biliary defects
- Authors
- Cui, S., Capecci, L.M., and Matthews, R.P.
- ID
- ZDB-PUB-110119-7
- Date
- 2011
- Source
- Developmental Biology 351(2): 229-241 (Journal)
- Registered Authors
- Matthews, Randy
- Keywords
- none
- MeSH Terms
-
- Zebrafish Proteins/physiology*
- Hepatocyte Nuclear Factor 1-beta/physiology*
- Cell Polarity*
- Animals
- Zebrafish/embryology*
- PubMed
- 21215262 Full text @ Dev. Biol.
Abstract
Planar cell polarity (PCP) establishes polarity within an epithelial sheet. Defects in PCP are associated with developmental defects involving directional cell growth, including defects in kidney tubule elongation that lead to formation of kidney cysts. Given the strong association between kidney cyst formation and developmental biliary defects in patients and in animal models, we investigated the importance of PCP in biliary development. Here we report that in zebrafish, morpholino antisense oligonucleotide-mediated knockdown of PCP genes including prickle-1a (pk1a) led to developmental biliary abnormalities, as well as localization defects of the liver and other digestive organs. The defects in biliary development appear to be mediated via downstream PCP targets such as Rho kinase, Jun kinase (JNK), and both actin and microtubule components of the cytoskeleton. Knockdown of pk1a led to decreased expression of vhnf1, a homeodomain gene previously shown to be involved in biliary development and in kidney cyst formation; forced expression of vhnf1 mRNA led to rescue of the pk1a morphant phenotype. Our results demonstrate that PCP plays an important role in vertebrate biliary development, interacting with other factors known to be involved in biliary morphogenesis.
Genes / Markers
Figure Gallery (13 images)
/ 2
/ 2
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping