Nested expression domains for odorant receptors in zebrafish olfactory epithelium
AUTOR(ES)
Weth, Franco
FONTE
The National Academy of Sciences of the USA
RESUMO
The mapping of high-dimensional olfactory stimuli onto the two-dimensional surface of the nasal sensory epithelium constitutes the first step in the neuronal encoding of olfactory input. We have used zebrafish as a model system to analyze the spatial distribution of odorant receptor molecules in the olfactory epithelium by quantitative in situ hybridization. To this end, we have cloned 10 very divergent zebrafish odorant receptor molecules by PCR. Individual genes are expressed in sparse olfactory receptor neurons. Analysis of the position of labeled cells in a simplified coordinate system revealed three concentric, albeit overlapping, expression domains for the four odorant receptors analyzed in detail. Such regionalized expression should result in a corresponding segregation of functional response properties. This might represent the first step of spatial encoding of olfactory input or be essential for the development of the olfactory system.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=24091Documentos Relacionados
- Expression Patterns of Odorant Receptors and Response Properties of Olfactory Sensory Neurons in Aged Mice
- Cell cultures of neuroblasts from rat olfactory epithelium that show odorant responses.
- Spatial pattern of receptor expression in the olfactory epithelium.
- Olfactory blocking and odorant similarity in the honeybee
- The spatial distributions of odorant sensitivity and odorant-induced currents in salamander olfactory receptor cells.
