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Related Concept Videos

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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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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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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Commitment is the  process whereby stem cells:
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Overview of Hematopoiesis01:20

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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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Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as  SH2...
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Flow Cytometry Analysis of Murine Bone Marrow Hematopoietic Stem and Progenitor Cells and Stromal Niche Cells
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Analyzing signaling activity and function in hematopoietic cells.

Tobias Kull1, Timm Schroeder1

  • 1Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule Zurich, Basel, Switzerland.

The Journal of Experimental Medicine
|June 15, 2021
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Summary
This summary is machine-generated.

Cellular signaling pathways adapt cell behavior to environmental cues. Analyzing these complex networks in hematopoietic stem and progenitor cells is crucial for understanding health and disease.

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Area of Science:

  • Cell Biology
  • Systems Biology
  • Hematopoiesis

Background:

  • Cells dynamically sense and respond to their environment through complex signaling pathways.
  • Cellular signaling network activity is context-dependent, dynamic, and heterogeneous.
  • Understanding cellular signaling in health and disease remains a challenge due to its complexity.

Purpose of the Study:

  • To discuss current technologies for analyzing hematopoietic stem and progenitor cell signaling.
  • To evaluate the potential and limitations of these technologies.
  • To explore the impact of signaling on cell fate decisions.

Main Methods:

  • Review and analysis of existing technologies for cellular signaling analysis.
  • Focus on techniques applicable to hematopoietic stem and progenitor cells.
  • Discussion of methods for assessing signaling's effect on cell fates.

Main Results:

  • Current technologies offer various approaches to study cellular signaling.
  • Each technology has specific requirements, potentials, and limitations.
  • A comprehensive understanding requires integrating data from multiple methods.

Conclusions:

  • Advanced technologies are needed to fully elucidate cellular signaling networks.
  • Improved analysis of hematopoietic stem and progenitor cell signaling can advance understanding of cell fate.
  • This knowledge is vital for manipulating cellular processes in health and disease.