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Calcium signaling in axon guidance
Daniel J Sutherland1, Zac Pujic1, Geoffrey J Goodhill2
1Queensland Brain Institute, The University of Queensland, St Lucia, QLD 4072, Australia.
Trends in Neurosciences
|June 28, 2014
Summary
Calcium signaling is crucial for guiding axons during nervous system development. This review explores how calcium entry affects growth cone movement and turning responses to guidance cues like Wnt5a.
Area of Science:
- Neuroscience
- Developmental Biology
- Cell Signaling
Background:
- Axon guidance is essential for forming neural circuits.
- Growth cone motility is regulated by intracellular signaling.
- Calcium ions (Ca2+) are key regulators in neuronal development.
Purpose of the Study:
- To review mechanisms of calcium entry into neuronal growth cones.
- To elucidate calcium's downstream effects on growth cone motility and turning.
- To highlight calcium's role in differential responses to guidance cues and Wnt5a.
Main Methods:
- Literature review of recent findings on calcium and axon guidance.
- Focus on molecular mechanisms of calcium influx.
- Analysis of calcium's role in growth cone turning and motility.
Main Results:
- Calcium entry mechanisms are diverse and critical for growth cone function.
- Calcium concentration dynamics dictate attractive vs. repulsive axon turning.
- Wnt5a-mediated guidance relies on specific calcium signaling pathways.
Conclusions:
- Calcium dynamics are central to precise axon pathfinding.
- Understanding calcium's role offers insights into neural development and disorders.
- Targeting calcium signaling may offer therapeutic strategies for neurological conditions.
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