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Dissection and Culture of Commissural Neurons from Embryonic Spinal Cord
Published on: May 25, 2010
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Commissural axonal corridors instruct neuronal migration in the mouse spinal cord
Christophe Laumonnerie1, Yong Guang Tong1, Helena Alstermark1
1Umeå Center for Molecular Medicine, Umeå University, Building 6M, Umeå 901-87, Sweden.
Nature Communications
|May 12, 2015
Summary
Commissural axons guide neuron positioning in the developing spinal cord. Disrupting these axons leads to abnormal cell body placement, revealing a novel interaction in neural development.
Area of Science:
- Neuroscience
- Developmental Biology
- Embryogenesis
Background:
- Neuronal development involves simultaneous migration of cell bodies and axons.
- The precise influence of axons on cell body positioning is not well understood.
Purpose of the Study:
- To investigate the role of commissural axons in guiding ventral interneuron cell body positioning within the embryonic mouse spinal cord.
Main Methods:
- Observation of commissural axon interactions with ventral interneuron cell bodies in mouse embryos.
- Genetic manipulation to disrupt commissural axons and assess subsequent cell body positioning.
Main Results:
- Commissural axons were found to bisect, delimit, or preconfigure ventral interneuron cell body positions.
- Genetic disruption of commissural axons resulted in aberrant ventral interneuron cell body positioning.
Conclusions:
- Commissural axons act as critical guides or border landmarks for ventral interneuron cell body migration.
- This axon-guided cell body positioning is a key mechanism in establishing neuronal architecture during development.
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