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Human fetal cells. I. Mitogenic responses.

J Faust, F Pranada, H Hapke

    Zeitschrift Fur Immunitatsforschung. Immunobiology
    |December 1, 1978
    PubMed
    Summary

    Human fetal cells

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    Area of Science:

    • Immunology
    • Developmental Biology
    • Cell Biology

    Background:

    • Fetal cells circulate in maternal blood during pregnancy.
    • Understanding fetal cell immunobiology is crucial for prenatal diagnostics and understanding maternal-fetal interactions.
    • Previous studies have explored fetal cell responses to mitogens with varying results.

    Purpose of the Study:

    • To quantitatively assess the mitogenic responses of human fetal cells from different sources.
    • To compare the responsiveness of isolated versus non-isolated fetal cells.
    • To investigate the influence of gestational age and mitogen type on fetal cell activation.

    Main Methods:

    • Human fetal cells were obtained from premature infants and maternal blood.
    • Cells were exposed to various T-cell and B-cell mitogens: phytohemagglutinin, pokeweed, dextran sulfate, and lipopolysaccharide.
    • Mitogenic responses were quantified to assess cellular activation.

    Main Results:

    • Fetal cell responsiveness to mitogens was age-dependent, increasing with gestational age.
    • Phytohemagglutinin induced the strongest stimulation in fetal cells.
    • Fetal cells in maternal blood showed reduced or absent responses to lipopolysaccharide and dextran sulfate compared to infant cells.

    Conclusions:

    • Mitogenic responses of fetal cells are influenced by gestational age, cell source, and experimental conditions.
    • Fetal cells in maternal circulation may differ immunologically from those within the fetus.
    • Current mitogens tested are insufficient for selective stimulation of fetal cells in maternal blood for prenatal diagnosis.

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