Sox2 expression in the visual system of two teleost species
| Autor: | Laura DeOliveira-Mello, Andreas F. Mack, Rosario Arévalo, Almudena Velasco, Juan M. Lara |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Fish Proteins
0301 basic medicine genetic structures Astatotilapia burtoni Neurogenesis Ependymoglial Cells Danio Retina 03 medical and health sciences 0302 clinical medicine stomatognathic system biology.animal medicine Animals Visual Pathways Molecular Biology Zebrafish SOX Transcription Factors Neurons biology General Neuroscience Vertebrate Optic Nerve Cichlids Zebrafish Proteins biology.organism_classification eye diseases Amacrine Cells 030104 developmental biology medicine.anatomical_structure Optic nerve sense organs Neurology (clinical) Stem cell Neuroglia Neuroscience 030217 neurology & neurosurgery Developmental Biology |
| Zdroj: | Brain Research. 1722:146350 |
| ISSN: | 0006-8993 |
| DOI: | 10.1016/j.brainres.2019.146350 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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