Related Experiment Videos
Characterization of npas3, a novel basic helix-loop-helix PAS gene expressed in the developing mouse nervous system
E W Brunskill1, D P Witte, A B Shreiner
1Division of Developmental Biology, Childrens' Hospital Medical Center, Cincinnati, OH 45229-3300, USA.
Mechanisms of Development
|October 27, 1999
Summary
We identified a novel gene, Npas3, belonging to the bHLH-PAS transcription factor family. Its expression is primarily observed in the developing central nervous system and adult brain, suggesting a crucial role in neurodevelopment.
Area of Science:
- Molecular Biology
- Developmental Biology
- Genetics
Background:
- The bHLH-PAS family of transcription factors plays critical roles in various biological processes.
- Understanding the function of novel members within this family is essential for deciphering gene regulation during development.
Purpose of the Study:
- To clone and characterize a newly identified bHLH-PAS domain gene, Npas3.
- To investigate the spatiotemporal expression pattern of Npas3 during embryonic development and in adult tissues.
Main Methods:
- Cloning of the Npas3 gene.
- Northern blot analysis to detect Npas3 mRNA.
- Whole-mount and section in situ hybridization to determine precise expression locations.
Main Results:
- Npas3 exhibits significant sequence identity to Npas1 within the bHLH-PAS family.
- Npas3 mRNA is detected in embryonic development (11.5-17.5 d.p.c.) and exclusively in the adult brain.
- Expression is observed in the developing neural tube, central nervous system neuroepithelium, and later restricted to the neopallial cortex.
- Npas3 is also found in non-neural tissues including dermis, mesenchyme, cardiac valves, limb, and kidney during development.
Conclusions:
- Npas3 is a novel bHLH-PAS transcription factor with a distinct expression profile.
- Its expression pattern suggests a role in the development of the central nervous system and other embryonic tissues.