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Related Concept Videos

Regulation of Hematopoietic Stem Cells01:01

Regulation of Hematopoietic Stem Cells

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All blood and immune cells are produced from the multipotent hematopoietic stem cells (HSCs) by the process of hematopoiesis. However, they all have a limited life span. In addition, many are depleted in immune surveillance or combatting an injury or infection. This makes blood one of the most regenerative tissues. Hematopoiesis helps replenish these blood and immune cells, restoring the body's normal functioning. However, overproduction of blood and immune cells can make them cancerous or...
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Role of Hematopoietic Growth Factors01:28

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Hematopoietic growth factors are molecules that regulate the differentiation rate of hematopoietic stem cells (HSCs). Erythropoietin (EPO), primarily produced by the kidneys, plays a crucial role in erythrocyte production. When oxygen levels in the blood are low, EPO is released into the bloodstream, reaching the bone marrow, where it stimulates HSCs to differentiate and mature into erythrocytes, which are vital for oxygen transport.
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Differentiation of Common Myeloid Progenitor Cells01:15

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Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...
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Multipotency of Hematopoietic Stem Cells01:19

Multipotency of Hematopoietic Stem Cells

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The hematopoietic stem cells or HSCs are multipotent, meaning they can differentiate and give rise to all blood and immune cells. HSCs are maintained in the quiescent stage until an external stimulus initiates their differentiation. The multipotent HSCs exist as two heterogeneous populations, long-term repopulating cells (LTRC) and short-term repopulating cells (STRC). The two HSC populations have different surface markers or receptors and are classified based on quiescence and long-term...
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Hematopoiesis01:21

Hematopoiesis

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The process of blood cell formation is called hematopoiesis. Hematopoiesis starts early during development, on the seventh day of embryogenesis. This phase of hematopoiesis is called the primitive wave, wherein the extraembryonic yolk sac allows the production of erythroid cells and endothelial cells from a common precursor called hemangioblast. The erythroid cells provide oxygen to support the growth of the rapidly dividing embryo. Hemangioblasts later develop into hematopoietic stem cells or...
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Lineage Commitment01:21

Lineage Commitment

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Commitment is the  process whereby stem cells:
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Colony Forming Cell CFC Assay for Human Hematopoietic Cells
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Hemopoietic colony-stimulating factors.

N A Nicola, M Vadas1

  • 1Experimental Allergy Laboratory of the Clinical Research Unit, Walter and Eliza Hall Institute of Medical Research, PO Royal Melbourne Hospital, Parkville, 3050, Victoria, Australia; Cancer Research Unit, Walter and Eliza Hall Institute of Medical Research, PO Royal Melbourne Hospital, Parkville, 3050, Victoria, Australia.

Immunology Today
|October 8, 2014
PubMed
Summary

Colony-stimulating factors (CSFs) are crucial growth factors for blood cell development. Purified CSFs like M-CSF, GM-CSF, G-CSF, and Multi-CSF exhibit distinct properties and regulate both progenitor cell growth and mature cell function.

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Area of Science:

  • Hematology and Molecular Biology
  • Cellular and Molecular Physiology

Background:

  • Hemopoietic colony-stimulating factors (CSFs) are vital glycoprotein growth factors.
  • They are essential for the survival, growth, and differentiation of hemopoietic progenitor cells in vitro.
  • CSFs are produced by various tissues throughout the body.

Purpose of the Study:

  • To discuss the different classes of purified colony-stimulating factors.
  • To highlight the unique molecular properties and biological activities of each CSF class.
  • To explore the proliferative and functional effects of CSFs on hemopoietic cells.

Main Methods:

  • Review and discussion of purified CSF classes: M-CSF, GM-CSF, G-CSF, and Multi-CSF.
  • Analysis of in vitro activity at picomolar concentrations.
  • Characterization of unique molecular properties and biological activity spectra.

Main Results:

  • Four classes of CSFs have been purified: M-CSF, GM-CSF, G-CSF, and Multi-CSF.
  • Each CSF class demonstrates distinct molecular properties and biological activity.
  • CSFs are active at picomolar concentrations in vitro.
  • CSFs stimulate both proliferation of progenitor cells and functional activities of mature hemopoietic cells.

Conclusions:

  • Purified CSFs represent a critical class of regulators in hematopoiesis.
  • Distinct CSF types possess unique characteristics influencing their specific roles.
  • CSFs impact both the development and functional capacity of blood cells.