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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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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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Role of Hematopoietic Growth Factors01:28

Role of Hematopoietic Growth Factors

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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.
Thrombopoietin (TPO), mainly released by the liver,...
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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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Overview of Hematopoiesis01:20

Overview of Hematopoiesis

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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).
Developmental Phases of Hematopoiesis
Initially, HSCs are formed in the embryonic yolk sac, a critical site for early blood cell production. These stem cells subsequently migrate to other...
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Lineage Commitment01:21

Lineage Commitment

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Commitment is the  process whereby stem cells:
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Hematopoietic Stem Cell: Regulation and Nutritional Intervention.

Siyuan Sun1, Yingxue Han2, Yumei Lei1

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Hematopoietic stem cells (HSCs) are vital for life. This review explores intrinsic factors like RNA-binding proteins and epigenetic modulators, plus extrinsic factors such as diet, impacting HSC function and therapies.

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Area of Science:

  • Hematology
  • Stem Cell Biology
  • Immunology

Background:

  • Hematopoietic stem cells (HSCs) are essential for organismal life maintenance.
  • HSC regulation involves complex intrinsic and extrinsic mechanisms.
  • Understanding HSC regulation is key for regenerative medicine and disease treatment.

Purpose of the Study:

  • To systematically review intrinsic factors regulating HSCs.
  • To explore the role of HSCs in bone marrow transplantation and autoimmune diseases.
  • To summarize the impact of diet and nutrients on HSC regulation.

Main Methods:

  • Systematic literature review of intrinsic HSC regulatory factors.
  • Analysis of studies on HSC function in bone marrow transplantation.
  • Review of research on HSCs in autoimmune diseases.
  • Examination of dietary and nutritional effects on HSCs.

Main Results:

  • Intrinsic factors include RNA-binding proteins, epigenetic modulators, and transcription regulators.
  • HSCs are implicated in bone marrow transplantation success and autoimmune disease pathogenesis.
  • Dietary components like high-fat diets, vitamins, amino acids, and probiotics/prebiotics influence HSCs.

Conclusions:

  • Intrinsic factors significantly shape HSC profiles and functions.
  • HSC research offers therapeutic avenues for bone marrow transplantation and autoimmune conditions.
  • Dietary interventions represent a promising strategy for modulating HSCs.