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The hematopoietic stroma.

L Weiss, H Sakai

    The American Journal of Anatomy
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Hematopoietic tissue stroma comprises diverse cells supporting blood cell development and regulating cell migration. Interactions between stromal and blood cells, influenced by factors and cell-surface compounds, are crucial for hematopoiesis.

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    Area of Science:

    • Hematology
    • Cell Biology
    • Immunology

    Background:

    • Hematopoietic tissues contain diverse stromal cells.
    • These cells perform mechanical and metabolic functions.
    • Stromal cells support and regulate hematopoietic tissues and vasculature.

    Purpose of the Study:

    • To describe the cellular composition and functions of hematopoietic tissue stroma.
    • To elucidate the regulatory roles of stromal cells in hematopoiesis.
    • To explore the interactions between stromal and hematopoietic cells.

    Main Methods:

    • Descriptive analysis of stromal cell types and their functions.
    • Review of cellular and molecular interactions within the hematopoietic microenvironment.
    • Examination of regulatory mechanisms involving humoral factors and cell-surface molecules.

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    Main Results:

    • Stromal cells include bone-lining cells, epithelial-reticular cells, macrophages, and antigen-presenting cells.
    • Stromal cells regulate cell migration and support stem cell differentiation.
    • Interactions involve humoral factors, immunoglobulins, and major histocompatibility antigens.
    • Blood cells like neutrophils and lymphocytes also regulate hematopoiesis.

    Conclusions:

    • Hematopoietic stroma is a complex microenvironment essential for blood cell production.
    • Stromal and hematopoietic cells dynamically interact to regulate hematopoiesis.
    • The distinction between stromal cells and blood cell derivatives can be challenging due to shared origins and functions.