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Related Experiment Videos

Cell membrane regions in preimplantation mouse embryos

L Izquierdo, T López, P Marticorena

    Journal of Embryology and Experimental Morphology
    |October 1, 1980
    PubMed
    Summary

    Alkaline phosphatase activity appears on the cell surfaces between blastomeres in early mouse embryos. This enzyme activity is linked to new cell membrane formation during embryonic development.

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    Area of Science:

    • Developmental Biology
    • Cell Biology
    • Embryology

    Background:

    • Alkaline phosphatase is a key enzyme in cellular processes.
    • Understanding early embryonic development requires characterizing cell surface dynamics.

    Purpose of the Study:

    • To investigate the presence and localization of alkaline phosphatase activity in cleaving mouse embryos.
    • To explore the relationship between enzyme activity and cell membrane formation.

    Main Methods:

    • Light and electron microscopy were used to visualize enzyme activity.
    • Experiments involved cleaving mouse embryos and dissociated morulae.

    Main Results:

    • Alkaline phosphatase activity was detected on cell surfaces between blastomeres from the late 4-cell stage.
    • Activity was also observed in cytoplasmic crystalloid bodies.
    • The observed localization was not an artifact of enzyme reaction product retention.

    Conclusions:

    • The localization of alkaline phosphatase activity suggests new cell membrane formation during cleavage.
    • A potential link exists between cytoplasmic crystalloid bodies and the cell membrane via the cortical cytoskeleton.

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