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MIF-like activity in simian virus 40-transformed 3T3 fibroblast cultures

M E Hammond, R O Roblin, A M Dvorak

    Science (New York, N.Y.)
    |September 13, 1974
    PubMed

    Insights

    Simian virus 40-transformed fibroblasts (SV3T3) produce a substance that inhibits macrophage migration and alters their cell coat. This suggests a link between the cell coat, migration inhibition factor (MIF), and cell migration processes.

    Area of Science:

    • Cell Biology
    • Virology
    • Immunology

    Background:

    • Simian virus 40 (SV40) transformation alters fibroblast cell properties.
    • Macrophage migration is crucial in immune responses and tissue repair.

    Purpose of the Study:

    • To investigate the differences in macromolecular products between SV40-transformed (SV3T3) and untransformed (3T3) fibroblasts.
    • To explore the relationship between cell coat material, migration inhibition factor (MIF), and macrophage migration.

    Main Methods:

    • Comparative analysis of macromolecular products secreted by SV3T3 and 3T3 cells.
    • Assessment of macrophage migration inhibition and aggregation.
    • Evaluation of cell coat material on both cell types.

    Main Results:

    • SV3T3 cells, unlike 3T3 cells, secrete a product that inhibits macrophage migration.
    • SV3T3 cells induce macrophage aggregation and loss of a specific cell coat material.
    • SV3T3 cells exhibit a deficiency in this particular surface cell coat material compared to 3T3 cells.

    Conclusions:

    • A macromolecular product from SV40-transformed fibroblasts influences macrophage behavior.
    • The cell coat composition appears to be related to macrophage migration.
    • A potential connection exists between MIF, cell coat integrity, and cell migration.

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