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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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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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Hematopoiesis, or blood cell production, is a vital biological process that begins early in embryonic development and continues throughout life. This process generates the various types of cells found in blood, including red blood cells, white blood cells, and platelets from hematopoietic stem cells (HSCs).
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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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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Related Experiment Video

Updated: Oct 31, 2025

Author Spotlight: Advancing Hematopoietic Research Using Stromal Cell Isolation for Single Cell Sequencing
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Inflammation, Aging and Hematopoiesis: A Complex Relationship.

Pavlos Bousounis1,2, Veronica Bergo1,2,3, Eirini Trompouki1,4

  • 1Department of Cellular and Molecular Immunology, Max Planck Institute of Immunobiology and Epigenetics, 79108 Freiburg, Germany.

Cells
|July 2, 2021
PubMed
Summary
This summary is machine-generated.

Inflammation impacts hematopoietic stem cells (HSCs), affecting blood cell production. Understanding this link is key for treating age-related diseases and improving therapies.

Keywords:
agingbone marrow nichehematopoiesishematopoietic stem cellsinflammatory signalingmyelodysplasiamyeloid biasregeneration

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Area of Science:

  • Hematology
  • Immunology
  • Stem Cell Biology

Background:

  • Hematopoietic stem cells (HSCs) generate all blood cells.
  • HSCs rely on inflammatory signals for normal function.
  • Dysregulated inflammation negatively impacts HSCs.

Purpose of the Study:

  • To review the literature on HSCs and inflammation.
  • To explore how inflammation affects HSCs during aging.
  • To highlight implications for disease and therapy.

Main Methods:

  • Literature review of studies on HSCs and inflammation.
  • Analysis of age-related changes in HSC function.
  • Examination of the bone marrow niche's role.

Main Results:

  • Homeostatic inflammation is crucial for HSCs.
  • Acute or chronic inflammation impairs HSC self-renewal and function.
  • Aging exacerbates inflammation, leading to myeloid-biased differentiation.

Conclusions:

  • Inflammation significantly influences HSC behavior throughout life.
  • Age-related inflammation contributes to hematopoietic dysfunction.
  • Targeting HSC-inflammation interactions may restore hematopoietic function.