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Related Experiment Videos

Microtubules, interkinetic nuclear migration and neurulation.

P E Messier

    Experientia
    |March 15, 1978
    PubMed
    Summary

    Interkinetic nuclear migration, driven by cytoplasmic microtubules, is crucial for neuroepithelial invagination during chick embryo neurulation. This process involves cell elongation and basal widening, generating the necessary strain for folding.

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    Area of Science:

    • Developmental biology
    • Cell biology
    • Embryology

    Background:

    • Neurulation is a critical process in embryonic development.
    • Interkinetic nuclear migration is a key phenomenon in neuroepithelial folding.
    • The precise mechanisms driving neuroepithelial invagination require further elucidation.

    Purpose of the Study:

    • To review hypotheses on neurulation mechanisms.
    • To investigate the role of interkinetic nuclear migration in neuroepithelial invagination.
    • To identify the cellular components involved in interkinetic nuclear migration.

    Main Methods:

    • Review of existing hypotheses on neurulation.
    • Presentation of evidence implicating cytoplasmic microtubules.
    • Analysis of the contribution of interkinetic nuclear migration to cell shape changes.

    Main Results:

    • Cytoplasmic microtubules are implicated in interkinetic nuclear migration.
    • Interkinetic nuclear migration contributes to cell elongation.
    • Basal region widening of neuroepithelial cells is facilitated by this migration, creating strain for invagination.

    Conclusions:

    • Cytoplasmic microtubules play a significant role in interkinetic nuclear migration during neurulation.
    • Interkinetic nuclear migration is essential for generating the forces required for neuroepithelial invagination.
    • Microtubule-mediated nuclear movement influences cell morphology and tissue morphogenesis.

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