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Related Experiment Videos

Reprograming of murine blastocoele formation.

R S Prather, N L First

    The Journal of Experimental Zoology
    |March 1, 1986
    PubMed
    Summary

    Communication between early mouse embryo cells regulates blastocoel formation. Isolated blastomeres from eight-cell embryos cavitated similarly to intact eight-cell embryos, indicating cell-cell signaling impacts early development.

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    Area of Science:

    • Developmental Biology
    • Cellular Communication
    • Embryogenesis

    Background:

    • Early embryonic development involves complex cellular interactions.
    • Blastocoel formation is a critical step in mammalian embryogenesis.
    • Understanding cell-cell communication is key to deciphering developmental timing.

    Purpose of the Study:

    • To investigate intercellular communication in asynchronous cleavage stage blastomeres.
    • To determine the role of blastomere communication in regulating blastocoel formation.
    • To analyze the timing of cavitation in reaggregated and isolated blastomeres.

    Main Methods:

    • Transferring individual blastomeres from eight-cell murine embryos into various environments (empty zonae pellucidae, intact two-cell embryos, enucleated two-cell embryos).
    • Monitoring blastomere and embryo development over 75 hours.
    • Observing and comparing cavitation timing in experimental and control groups (intact eight-cell and two-cell embryos).

    Main Results:

    • Isolated eight-cell blastomeres cavitated concurrently with intact eight-cell embryos.
    • Intact two-cell embryos exhibited cavitation 24 hours later than eight-cell controls.
    • Embryos formed by combining two-cell embryos and eight-cell blastomeres showed intermediate cavitation timing.

    Conclusions:

    • Evidence of communication between asynchronous cleavage stage blastomeres.
    • This communication actively regulates blastocoel formation timing.
    • Cell-cell signaling plays a crucial role in coordinating early embryonic development and cavitation.

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