Related Experiment Video
Updated: Feb 25, 2026
A Screenable In Vivo Assay for Mitochondrial Modulators Using Transgenic Bioluminescent Caenorhabditis elegans
Published on: October 16, 2015
LIN-32/Atonal Controls Oxygen Sensing Neuron Development in Caenorhabditis elegans
Teresa Rojo Romanos1,2, David Pladevall-Morera1,2, Kasper Langebeck-Jensen2
1Development and Stem Cells Program, Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Melbourne, Victoria, 3800, Australia.
The LIN-32/Atonal transcription factor is crucial for developing oxygen-sensing neurons in C. elegans. Its absence disrupts neurogenesis and oxygen response, but inhibiting apoptosis partially restores neuronal fate, highlighting its role in neuronal development and survival.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Precise neurogenesis is essential for complex nervous system development.
- The proneural basic-helix-loop-helix (bHLH) transcription factor family plays vital roles in neurogenesis across species.
- Regulatory networks control neuron generation and specification.
Purpose of the Study:
- To identify key regulators of URXL/R oxygen-sensing neuron development in Caenorhabditis elegans.
- To investigate the function of the LIN-32/Atonal transcription factor in neurogenesis.
- To explore the role of LIN-32/Atonal in neuronal lineage development and apoptosis.
Main Methods:
- Identification of LIN-32/Atonal as a regulator in C. elegans.
- Analysis of gene expression in lin-32 mutant animals.
- Assessment of neuronal development in affected cell lineages.
- Investigation of apoptosis pathway inhibition effects on neuronal fate.
Main Results:
- LIN-32/Atonal is a key regulator of URXL/R oxygen-sensing neuron development.
- Loss of LIN-32/Atonal abrogates URX specification and terminal differentiation gene expression.
- lin-32 mutants exhibit impaired response to increased environmental oxygen.
- Development of CEPDL/R and URADL/R neurons is also defective in lin-32 mutants.
- Inhibition of apoptosis partially restores URX neuronal fate in lin-32 mutants.
Conclusions:
- LIN-32/Atonal is essential for the development and function of oxygen-sensing neurons in C. elegans.
- LIN-32/Atonal regulates the development of an entire neuronal lineage, not just URX neurons.
- LIN-32/Atonal plays a role in regulating neuronal apoptosis, similar to its function in other organisms.
