PUBLICATION
Sox2 Expression in the Visual System of two Teleost Species
- Authors
- DeOliveira-Mello, L., Lara, J.M., Arévalo, R., Velasco, A., Mack, A.F.
- ID
- ZDB-PUB-190729-14
- Date
- 2019
- Source
- Brain research 1722: 146350 (Journal)
- Registered Authors
- Mack, Andreas
- Keywords
- Cichlid fish, Continuous growth, Glial cells, Sox2, Visual system, Zebrafish
- MeSH Terms
-
- Amacrine Cells/metabolism
- Animals
- Cichlids/metabolism*
- Ependymoglial Cells/metabolism
- Fish Proteins/metabolism*
- Neurogenesis
- Neuroglia/metabolism
- Neurons/metabolism
- Optic Nerve/metabolism*
- Retina/metabolism*
- SOX Transcription Factors/metabolism*
- Visual Pathways/metabolism
- Zebrafish/metabolism
- Zebrafish Proteins/metabolism*
- PubMed
- 31351039 Full text @ Brain Res.
Citation
DeOliveira-Mello, L., Lara, J.M., Arévalo, R., Velasco, A., Mack, A.F. (2019) Sox2 Expression in the Visual System of two Teleost Species. Brain research. 1722:146350.
Abstract
The visual system of teleost fish shows growth and regeneration capacities during the entire animal's life. Thus, the visual system of adult fish serves as a model for studying neurogenesis in the vertebrate central nervous system (CNS). Our study focused on the expression pattern of Sox2 in the fish visual system. Sox2 is a transcription factor known for its function in keeping stem cell properties, and as a regulator of cell fate during development, especially in the visual system. We used two different fish species: Astatotilapia burtoni and Danio rerio. In the visual system of fish, we identified Sox2 positive cells in the stem cell niche in the peripheral retina, in Müller cells and amacrine cells in the differentiated retina, and glial cells in the optic nerve (ON). We did not observe hardly any Sox2 expression in the optic nerve head (ONH). In the ON, Sox2 positive glial cells were lining the fascicles of new axons. Taking together, the broad spectrum of Sox2 expression indicates that this protein has different functions in the CNS of adult vertebrates. The results suggest that Sox2 has functions associated with the pathway of new axons from the retina. To understand the variety of cell types and subtypes and their plasticity potential in the visual system of fish will be essential to comprehend the growing and regenerating CNS in adult vertebrates.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping