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The genetic basis of mammalian neurulation
Andrew J Copp1, Nicholas D E Greene, Jennifer N Murdoch
1Neural Development Unit, Institute of Child Health, University College London, London WC1N 1EH, UK. acopp@ich.ucl.ac.uk
Abstract:
More than 80 mutant mouse genes disrupt neurulation and allow an in-depth analysis of the underlying developmental mechanisms. Although many of the genetic mutants have been studied in only rudimentary detail, several molecular pathways can already be identified as crucial for normal neurulation. These include the planar cell-polarity pathway, which is required for the initiation of neural tube closure, and the sonic hedgehog signalling pathway that regulates neural plate bending. Mutant mice also offer an opportunity to unravel the mechanisms by which folic acid prevents neural tube defects, and to develop new therapies for folate-resistant defects.
Insights
Mutant mouse genes reveal crucial molecular pathways for neural tube development. Studying these genetic models aids understanding of folic acid
Area of Science:
- Developmental biology
- Genetics
- Neuroscience
Background:
- Neurulation, the process of neural tube formation, is critical for embryonic development.
- Over 80 mutant mouse genes are known to disrupt neurulation, offering insights into developmental mechanisms.
- Understanding these disruptions is key to identifying causes of neural tube defects.
Purpose of the Study:
- To analyze the underlying developmental mechanisms of neurulation using mutant mouse models.
- To identify molecular pathways essential for normal neural tube closure and development.
- To explore the role of folic acid in preventing neural tube defects and developing new therapies.
Main Methods:
- Analysis of over 80 mutant mouse genes affecting neurulation.
- Investigation of molecular pathways involved in neural tube closure and neural plate bending.
- Utilizing mutant mice to study folic acid's preventative mechanisms against neural tube defects.
Main Results:
- Identification of the planar cell-polarity pathway as crucial for initiating neural tube closure.
- Identification of the sonic hedgehog signalling pathway as essential for regulating neural plate bending.
- Mutant mouse models provide a platform for studying folic acid's role in preventing neural tube defects.
Conclusions:
- Mutant mouse genes are invaluable tools for dissecting neurulation mechanisms.
- Planar cell-polarity and sonic hedgehog pathways are key molecular regulators of neurulation.
- Further research with mutant mice can lead to novel therapies for neural tube defects, including folate-resistant types.