|ZFIN ID: ZDB-PUB-151125-5|
Protocadherins control the modular assembly of neuronal columns in the zebrafish optic tectum
Cooper, S.R., Emond, M.R., Duy, P.Q., Liebau, B.G., Wolman, M.A., Jontes, J.D.
|Source:||The Journal of cell biology 211: 807-14 (Journal)|
|Registered Authors:||Emond, Michelle, Jontes, James, Wolman, Marc|
|PubMed:||26598617 Full text @ J. Cell Biol.|
Cooper, S.R., Emond, M.R., Duy, P.Q., Liebau, B.G., Wolman, M.A., Jontes, J.D. (2015) Protocadherins control the modular assembly of neuronal columns in the zebrafish optic tectum. The Journal of cell biology. 211:807-14.
ABSTRACTCell-cell recognition guides the assembly of the vertebrate brain during development. δ-Protocadherins comprise a family of neural adhesion molecules that are differentially expressed and have been implicated in a range of neurodevelopmental disorders. Here we show that the expression of δ-protocadherins partitions the zebrafish optic tectum into radial columns of neurons. Using in vivo two-photon imaging of bacterial artificial chromosome transgenic zebrafish, we show that pcdh19 is expressed in discrete columns of neurons, and that these columnar modules are derived from proliferative pcdh19(+) neuroepithelial precursors. Elimination of pcdh19 results in both a disruption of columnar organization and defects in visually guided behaviors. These results reveal a fundamental mechanism for organizing the developing nervous system: subdivision of the early neuroepithelium into precursors with distinct molecular identities guides the autonomous development of parallel neuronal units, organizing neural circuit formation and behavior.