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Embryonic expression of a P2X(3) receptor encoding gene in zebrafish
W H Norton1, K B Rohr, G Burnstock
1Department of Anatomy and Developmental Biology, University College London, Gower Street, WC1E 6BT, London, UK. w.norton@ucl.ac.uk
Mechanisms of Development
|November 25, 2000
Summary
The P2X3 receptor, crucial for sensory signals in adult mammals, is newly found in developing zebrafish. This gene is expressed in early neural structures like the trigeminal ganglion and sensory neurons.
Area of Science:
- Developmental Biology
- Neuroscience
- Molecular Biology
Background:
- The P2X3 purinoreceptor is understood to mediate sensory and nociceptive signals in adult mammalian tissues.
- Limited information exists regarding P2X gene family expression and function during early developmental stages.
Purpose of the Study:
- To investigate the expression pattern of the p2x3 gene during zebrafish development.
- To identify the specific cell types and developmental origins of P2X3 receptor expression in early zebrafish.
Main Methods:
- Zebrafish embryos were utilized to study gene expression.
- In situ hybridization or similar techniques were likely employed to visualize p2x3 expression patterns.
Main Results:
- The zebrafish p2x3 gene is expressed early in development within the trigeminal ganglion anlage.
- Expression was also observed in spinal sensory Rohon-Beard cells and the posterior lateral line ganglion.
- Evidence suggests p2x3 expression in neural crest-derived trigeminal cells, not placode-derived cells.
Conclusions:
- The P2X3 receptor system is present and potentially functional in sensory neurons during early zebrafish development.
- This study provides foundational knowledge on P2X3 receptor involvement in vertebrate neurodevelopment.