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Single-cell Profiling of Developing and Mature Retinal Neurons
Published on: April 19, 2012
Stochastic neuronal cell fate choices.
Robert J Johnston1, Claude Desplan
1Center for Developmental Genetics, Department of Biology, New York University, New York, NY 10003, USA.
Current Opinion in Neurobiology
|May 31, 2008
Summary
Sensory receptor gene selection involves random choices, leading to cell subtype diversity. Researchers are exploring the underlying mechanisms in flies, worms, and mice, revealing roles for lateral signaling and promoter selection.
Area of Science:
- Neuroscience
- Developmental Biology
- Genetics
Background:
- Neuronal cell fate decisions can be reproducible or stochastic.
- Stochastic choices often result in spatial randomization of cell subtypes, particularly in sensory systems.
- Expression of specific sensory receptor genes is frequently selected randomly from a set of possibilities.
Purpose of the Study:
- To elucidate the mechanisms controlling cell fate decisions in sensory receptor gene expression.
- To investigate the processes governing color photoreceptor subtypes in flies and olfactory receptor subtypes in worms and mice.
Main Methods:
- Review of recent findings on sensory receptor gene selection.
- Analysis of biological concepts such as lateral signaling and promoter selection.
Main Results:
- Identified stochastic mechanisms underlying sensory receptor gene selection.
- Highlighted the roles of lateral signaling and promoter selection in these processes.
- Demonstrated conserved principles across different species (flies, worms, mice).
Conclusions:
- While lateral signaling and promoter selection are involved, fundamental questions about stochastic cell fate choices in sensory systems remain.
- Further research is needed to fully understand these complex gene selection mechanisms.
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