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[Physiological (programmed) cell death in hemopoiesis]

G I Kozinets, V M Pogorelov, G M Khazem

    Klinicheskaia Laboratornaia Diagnostika
    |January 1, 1996
    PubMed
    Summary
    This summary is machine-generated.

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    Hematopoiesis, the process of blood cell formation, is strictly regulated by a balance between cell proliferation, differentiation, and apoptosis (programmed cell death). Hematopoietic growth factors are crucial for maintaining this balance and ensuring blood cell homeostasis.

    Area of Science:

    • Hematology
    • Cell Biology
    • Molecular Biology

    Context:

    • Hematopoiesis requires strict regulation due to the short lifespan of mature blood cells and stable circulating populations.
    • Regulation is mediated by precursor cell interactions with microenvironmental molecules, including soluble hematopoietic growth factors.
    • Key hematopoietic growth factors include erythropoietin, colony-stimulating factors, interleukins, and stem cell factors.

    Purpose:

    • To review the morphology of apoptosis, a distinct form of programmed cell death.
    • To present evidence for the role of apoptosis in regulating hematopoiesis.
    • To highlight the critical balance between proliferation, differentiation, and apoptosis in maintaining hematopoietic homeostasis.

    Summary:

    • Pluripotent cells differentiate into committed precursors that mature into various blood cells.

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  • Hematopoietic growth factors stimulate proliferation, differentiation, and viability, while their absence triggers apoptosis.
  • Apoptosis is an active, widespread cell death process essential for biological system control.

    • Impact:

    • Understanding the balance of proliferation, differentiation, and apoptosis is key to comprehending hematopoietic regulation.
    • Findings illustrate the significance of apoptosis in experimental and clinical hematology.
    • This review provides insights into maintaining blood cell homeostasis through controlled cell death mechanisms.