Proneural gene requirements and progenitor dynamics in sensory organ development
The inner ear is the sensory organ for hearing and balance. Its functional unit is the sensory patch that comprises: i) hair cells, which are the mechano- transducers sensing the stimuli and are embedded in the supporting cell layer, and ii) sensory neurons, which conduct these stimuli to the hindbr...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | CBUC, CESCA |
| Repositorio: | TDR. Tesis Doctorales en Red |
| OAI Identifier: | oai:www.tdx.cat:10803/399037 |
| Acceso en línea: | http://hdl.handle.net/10803/399037 |
| Access Level: | acceso abierto |
| Palabra clave: | Inner ear Cell fate specification Progenitors Live-imaging Cell lineage Oïda interna Especificació del destí cel·lular Imatges en viu Llinatge cel·lular 612 |
| Sumario: | The inner ear is the sensory organ for hearing and balance. Its functional unit is the sensory patch that comprises: i) hair cells, which are the mechano- transducers sensing the stimuli and are embedded in the supporting cell layer, and ii) sensory neurons, which conduct these stimuli to the hindbrain. The generation of hair cells and neurons occurs in the otic placode early during embryonic development. Cell fate specification relies on expression of proneural genes and is concomitant with organ growth and morphogenesis. We used zebrafish embryos and combined live imaging and genetic tools to investigate: i) the location of the different progenitor pools, ii) the potentialities they exhibit, and iii) the dynamic behavior of these cells in generating the different fates. We have generated progenitor maps for the different cell fates by lineage tracing and focused our analysis on the behavioral changes of progenitors upon depletion of a proneural gene and the spatial and temporal aspects of cell fate specification. |
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