PUBLICATION
Protocadherin-19 is essential for early steps in brain morphogenesis
- Authors
- Emond, M.R., Biswas, S., and Jontes, J.D.
- ID
- ZDB-PUB-090727-4
- Date
- 2009
- Source
- Developmental Biology 334(1): 72-83 (Journal)
- Registered Authors
- Emond, Michelle, Jontes, James
- Keywords
- Zebrafish, protocadherin, brain morphogenesis, neurulation, convergence
- MeSH Terms
-
- Animals
- Body Patterning
- COS Cells
- Cadherins/genetics
- Cadherins/metabolism*
- Chlorocebus aethiops
- Embryo, Nonmammalian/metabolism
- In Situ Hybridization
- Morphogenesis*
- Nervous System/growth & development
- Neural Plate/growth & development*
- Zebrafish
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism*
- PubMed
- 19615992 Full text @ Dev. Biol.
Citation
Emond, M.R., Biswas, S., and Jontes, J.D. (2009) Protocadherin-19 is essential for early steps in brain morphogenesis. Developmental Biology. 334(1):72-83.
Abstract
One of the earliest stages of brain morphogenesis is the establishment of the neural tube during neurulation. While some of the cellular mechanisms responsible for neurulation have been described in a number of vertebrate species, the underlying molecular processes are not fully understood. We have identified the zebrafish homolog of protocadherin-19, a member of the cadherin superfamily, which is expressed in the anterior neural plate and is required for brain morphogenesis. Interference with Protocadherin-19 function with antisense morpholino oligonucleotides leads to a severe disruption in early brain morphogenesis. Despite these pronounced effects on neurulation, axial patterning of the neural tube appears normal, as assessed by in situ hybridization for otx2, pax2.1 and krox20. Characterization of embryos early in development by in vivo 2-photon time-lapse microscopy reveals that the observed disruption of morphogenesis results from an arrest of cell convergence in the anterior neural plate. These results provide the first functional data for protocadherin-19, demonstrating an essential role in early brain development.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping