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Related Experiment Videos

Protein synthesis in differentiating normal and leukemic erythroid cells.

B Adkins, H Beug, T Graf

    Journal of Cellular Physiology
    |May 1, 1985
    PubMed
    Summary

    Avian erythroblastosis virus (AEV) and S13 strains cause erythroleukemic cells to differentiate. Both normal and leukemic cells follow similar differentiation pathways, showing related protein synthesis patterns during maturation.

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    Area of Science:

    • Molecular biology
    • Cell biology
    • Virology

    Background:

    • Avian erythroblastosis virus (AEV) and S13 strains induce erythroleukemia.
    • Studying cellular differentiation at the molecular level is crucial for understanding normal development and disease.

    Purpose of the Study:

    • To investigate the molecular mechanisms of erythroid differentiation in both normal and AEV/S13-induced erythroleukemic cells.
    • To compare the protein synthesis patterns during differentiation between normal and leukemic erythroid cells.

    Main Methods:

    • Cell culture of erythroleukemic cells induced by AEV or S13.
    • Isolation of homogeneous cell fractions at discrete differentiation stages using Percoll density-gradient centrifugation.
    • Separation of normal erythroid cells from bone marrow via immunological 'panning'.

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  • Analysis of total protein synthesis using two-dimensional gel electrophoresis.

    • Main Results:

    • Several protein expression changes were observed in differentiating leukemic cells, distinct from normal cells.
    • Despite some differences, normal and leukemic cells exhibited closely related protein synthesis patterns at comparable maturity stages.
    • Both normal and leukemic cells showed similar early and late changes in polypeptide synthesis during erythroid maturation.
    • A significant switch in total protein synthesis patterns occurred during late differentiation in both cell types.

    Conclusions:

    • Normal and erythroleukemic cells differentiate along remarkably similar molecular pathways.
    • The study provides insights into the conserved mechanisms of erythroid differentiation, even in the context of viral transformation.