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Related Experiment Videos

Asynchronous onset of odorant receptor expression in the developing zebrafish olfactory system

A L Barth1, N J Justice, J Ngai

  • 1Department of Molecular and Cell Biology, University of California, Berkeley 94720, USA.

Neuron
|January 1, 1996
PubMed
Summary

In developing zebrafish, olfactory neuron identity is linked to odorant receptor (OR) gene expression. Researchers discovered OR expression begins at different times, suggesting temporal regulation guides olfactory system development.

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • Olfactory neuron function is determined by expressed odorant receptors (ORs).
  • Understanding olfactory neuron specification requires examining OR gene expression patterns during development.

Purpose of the Study:

  • To investigate the temporal dynamics of odorant receptor gene expression in the developing zebrafish olfactory system.
  • To determine if OR expression is stochastic or regulated by developmental cues.

Main Methods:

  • Analysis of odorant receptor gene expression patterns in the developing zebrafish olfactory placode.
  • Observation of the timing of onset for specific OR expression.

Main Results:

  • The onset of specific odorant receptor gene expression in the developing zebrafish olfactory placode is asynchronous.

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  • Odorant receptor expression is not random but appears to be influenced by temporally regulated developmental cues.

    • Conclusions:

    • Temporal waves of odorant receptor expression may simplify the regulation of the large OR gene family.
    • Developmental timing plays a crucial role in specifying olfactory neuron identity through regulated OR expression.