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Neuronal migration defects in the Loa dynein mutant mouse
Kassandra M Ori-McKenney1, Richard B Vallee
1Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA.
Neural Development
|May 27, 2011
Summary
The Loa mouse mutation impairs neuronal migration in the neocortex by affecting dynein motor protein function. This study establishes a new genetic model to explore the dynein pathway
Area of Science:
- Neuroscience
- Cell Biology
- Genetics
Background:
- Cytoplasmic dynein is crucial for cell migration.
- A specific genetic model for studying dynein in migration was lacking.
- The Loa mouse mutation affects dynein heavy chain.
Purpose of the Study:
- To investigate the impact of the Loa mutation on neuronal migration.
- To establish a genetic model for dynein pathway research in neuronal migration.
Main Methods:
- Utilized the Loa mouse model.
- Examined neocortical development and neuronal migration.
- Analyzed the rate of radial migration in bipolar neurons.
Main Results:
- Loa homozygotes exhibited defects in neocortical lamination.
- Neuronal migration was impaired in Loa homozygotes.
- A reduced rate of radial migration of bipolar neurons was observed.
Conclusions:
- The Loa mutation provides a new model for studying the dynein pathway in neuronal migration.
- Demonstrated a link between dynein processivity and cell movement during brain development.
