PUBLICATION
Identification of the optic recess region as a morphogenetic entity in the zebrafish forebrain
- Authors
- Affaticati, P., Yamamoto, K., Rizzi, B., Bureau, C., Peyriéras, N., Pasqualini, C., Demarque, M., Vernier, P.
- ID
- ZDB-PUB-150305-2
- Date
- 2015
- Source
- Scientific Reports 5: 8738 (Journal)
- Registered Authors
- Demarque, Michael, Pasqualini, Catherine, Peyriéras, Nadine, Rizzi, Barbara, Vernier, Philippe, Yamamoto, Kei
- Keywords
- none
- MeSH Terms
-
- Reverse Transcriptase Polymerase Chain Reaction
- Models, Anatomic
- Embryo, Nonmammalian/anatomy & histology
- Embryo, Nonmammalian/embryology
- Embryo, Nonmammalian/metabolism
- Zebrafish/embryology
- Zebrafish/genetics*
- Zebrafish/metabolism
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- In Situ Hybridization, Fluorescence
- Preoptic Area/embryology
- Preoptic Area/metabolism*
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
- Models, Genetic
- Time Factors
- Prosencephalon/embryology
- Prosencephalon/metabolism*
- ELAV-Like Protein 3/genetics
- ELAV-Like Protein 3/metabolism
- Gene Expression Regulation, Developmental
- Animals
- Basic Helix-Loop-Helix Transcription Factors/genetics
- Basic Helix-Loop-Helix Transcription Factors/metabolism
- Neurogenesis/genetics*
- Microscopy, Confocal
- PubMed
- 25736911 Full text @ Sci. Rep.
Citation
Affaticati, P., Yamamoto, K., Rizzi, B., Bureau, C., Peyriéras, N., Pasqualini, C., Demarque, M., Vernier, P. (2015) Identification of the optic recess region as a morphogenetic entity in the zebrafish forebrain. Scientific Reports. 5:8738.
Abstract
Regionalization is a critical, highly conserved step in the development of the vertebrate brain. Discrepancies exist in how regionalization of the anterior vertebrate forebrain is conceived since the "preoptic area" is proposed to be a part of the telencephalon in tetrapods but not in teleost fish. To gain insight into this complex morphogenesis, formation of the anterior forebrain was analyzed in 3D over time in zebrafish embryos, combining visualization of proliferation and differentiation markers, with that of developmental genes. We found that the region containing the preoptic area behaves as a coherent morphogenetic entity, organized around the optic recess and located between telencephalon and hypothalamus. This optic recess region (ORR) makes clear borders with its neighbor areas and expresses a specific set of genes (dlx2a, sim1a and otpb). We thus propose that the anterior forebrain (secondary prosencephalon) in teleosts contains three morphogenetic entities (telencephalon, ORR and hypothalamus), instead of two (telencephalon and hypothalamus). The ORR in teleosts could correspond to "telencephalic stalk area" and "alar hypothalamus" in tetrapods, resolving current inconsistencies in the comparison of basal forebrain among vertebrates.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping