Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia.

Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Research Abstract Details 

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Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Abstract Text:

Thilo Bass,Matthias Ebert,Matthias Hammerschmidt,Marcus Frank,

Protocadherins are cadherin-like molecules with adhesive and signaling functions, in particular, during neuronal development. Large protocadherin (Pcdh) gene clusters are present in the genome of vertebrates. In the zebrafish, two Pcdh clusters are found on chromosomes 10 (DrPcdh1) and 14 (DrPcdh2), each divided into subclusters of DrPcdhalpha and DrPcdhgamma family genes. In total, about 100 different DrPcdh molecules are predicted. We have analyzed the expression of the four DrPcdh subclusters and find that DrPcdh transcripts are upregulated in the developing zebrafish nervous system. In the adult fish brain, all four DrPcdh clusters are expressed in differentiated neurons, in particular, in the thalamic nuclei, tectum, and cerebellum. We show that expression patterns grossly overlap for each cluster but with regional differences and variations in strength of expression. Strikingly, the DrPcdh2gamma cluster, distinct from the three other clusters, is also expressed in neuronal precursor cells and ependymal cells of the embryonic and adult nervous system, as well as in specific non-neuronal epithelia. Antibodies to a conserved motif in the constant region of DrPcdh2gamma stain fiber tracts and neuropil of the zebrafish brain and cell-cell junctions in epithelia. Our results indicate that multiple DrPcdhs of the different clusters are expressed in differentiated zebrafish neurons, suggesting evolutionarily conserved functions of protocadherin clusters in cell adhesion and signaling. In addition, DrPcdh2gamma may exert more specific roles in neuronal precursor and non-neural epithelial cells, which have not yet been described for mammalian Pcdhgamma. Thus, our findings in zebrafish open new perspectives to examine these functions in other vertebrate model organisms.

Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Publishing Authors By Initials

T Bass,M Ebert,M Hammerschmidt,M Frank,

For similar proteins: fish proteins: zebrafish proteins research abstracts see: proteins: fish proteins: zebrafish proteins research

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Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Development genes and evolution

VOLUME: 217

Page Numbers: 337-51

Journal Abbreviation:

ISSN: 0949-944X

DAY: 12

MONTH: 04

YEAR: 2007

Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Information

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LANGUAGE: eng

NlmUniqueID: 9613264

Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Keywords Mesh Terms:

KEYWORDS: Zebrafish Proteins

MESH TERMS: metabolism

Chemical & Substance for Abstract: Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia. Information

Substance Name: Zebrafish Proteins

Registry Number: 0

Grant and Affiliation Information for Differential expression of four protocadherin alpha and gamma clusters in the developing and adult zebrafish: DrPcdh2gamma but not DrPcdh1gamma is expressed in neuronal precursor cells, ependymal cells and non-neural epithelia.

AFFILIATION: Max-Planck Institute of Immunobiology, Department of Molecular Embryology, Freiburg, Germany.

Country: Germany

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MEDLINETA: Dev Genes Evol

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