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Related Experiment Videos

Cell-type-specific pattern of myc protooncogene expression in developing human embryos.

S Pfeifer-Ohlsson, J Rydnert, A S Goustin

    Proceedings of the National Academy of Sciences of the United States of America
    |August 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Protooncogenes, like the myc gene, play a role in normal cell development. Researchers studied c-myc gene expression in early human embryos, finding it regulated in specific cells and linked to proliferation in a limited number of cases.

    Area of Science:

    • Developmental Biology
    • Molecular Biology
    • Human Embryogenesis

    Background:

    • Viral oncogenes alter cell proliferation and differentiation.
    • Protooncogenes, cellular homologues of viral oncogenes, are implicated in normal cell growth.

    Purpose of the Study:

    • Investigate the developmental role of protooncogenes in human embryogenesis.
    • Determine the spatial distribution of myc gene transcripts in early human embryos.

    Main Methods:

    • In situ hybridization technique.
    • Utilized a labeled myc exon probe.
    • Analyzed thin sections of early human embryos.

    Main Results:

    • Identified stage- and cell-type-specific regulation of c-myc gene expression.

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  • Observed expression primarily in epithelial cells of late first-trimester embryos.
  • Found a restricted linkage between c-myc expression and cellular proliferation.

    • Conclusions:

    • c-myc gene expression is tightly regulated during human embryonic development.
    • The connection between c-myc and proliferation is specific to certain embryonic cell types.
    • Protooncogenes likely have crucial, but specific, roles in human embryogenesis.