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Related Experiment Videos

Generation of functional clonal cell lines from human bone marrow stroma.

K Harigaya, H Handa

    Proceedings of the National Academy of Sciences of the United States of America
    |May 1, 1985
    PubMed
    Summary

    Researchers developed human bone marrow stromal cell lines to study hematopoietic stem cell growth. These cell lines promote the proliferation of granulomonocytic stem cells and enhance erythroid stem cell development.

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    Area of Science:

    • Hematology
    • Cell Biology
    • Stem Cell Research

    Background:

    • Bone marrow stromal cells play a crucial role in regulating hematopoiesis.
    • Understanding the factors produced by stromal cells is key to deciphering hematopoietic regulation.

    Purpose of the Study:

    • To establish and characterize human bone marrow stromal cell lines for studying hematopoietic microenvironment factors.
    • To investigate the influence of these cell lines on hematopoietic stem cell proliferation and differentiation.

    Main Methods:

    • Isolation of five clonal human bone marrow stromal cell lines after transfection with pSV3gpt.
    • Co-culture experiments using cell-line feeder layers and conditioned media.
    • Assays to assess the proliferation of committed granulomonocytic stem cells (CFUc) and early erythroid stem cells (BFUe).

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    Main Results:

    • All established stromal cell lines supported the proliferation of CFUc.
    • Conditioned media from these cell lines significantly increased the size and number of BFUe-derived colonies.
    • Erythropoietin in combination with conditioned media led to a substantial increase in mixed erythroid colonies.

    Conclusions:

    • Transfected human bone marrow stromal cell lines are valuable tools for identifying hematopoietic factors.
    • These cell lines facilitate the analysis of the mechanisms of action of hematopoietic microenvironment-derived factors.
    • The established cell lines offer a promising model for hematopoiesis research.