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Regulation of Hematopoietic Stem Cells

Regulation of Hematopoietic Stem Cells

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...

Lineage Commitment

Lineage Commitment

Commitment is the process whereby stem cells:

Multipotency of Hematopoietic Stem Cells

Multipotency of Hematopoietic Stem Cells

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...

Stem Cell Therapy for Tissue Regeneration

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell...

Hematopoiesis

Hematopoiesis

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...

Role of Hematopoietic Growth Factors

Role of Hematopoietic Growth Factors

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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Related Experiment Video

Updated: Jul 5, 2025

Bioengineering of Humanized Bone Marrow Microenvironments in Mouse and Their Visualization by Live Imaging

Bioengineering of Humanized Bone Marrow Microenvironments in Mouse and Their Visualization by Live Imaging

Published on: August 1, 2017

Immune System Influence on Hematopoietic Stem Cells and Leukemia Development.

John M Perry^1,2,3

¹Children's Mercy Kansas City, Kansas City, MO, USA. jmperry@cmh.edu.

Advances in Experimental Medicine and Biology

|January 16, 2024

Summary

Hematopoietic stem cells (HSCs) interact dynamically with the immune system, influencing cancer development and therapy. Understanding this immune microenvironment is key for future cancer treatments, especially for leukemic stem cells.

Keywords:

Hematopoietic stem cell Immune microenvironment Leukemia Leukemic stem cell

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Bioengineering of Humanized Bone Marrow Microenvironments in Mouse and Their Visualization by Live Imaging

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Author Spotlight: Analyzing Bone Marrow Microenvironment in Murine Hematological Malignancies

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Modeling Chemotherapy Resistant Leukemia In Vitro

Modeling Chemotherapy Resistant Leukemia In Vitro

Published on: February 9, 2016

Area of Science:

Immunology
Stem Cell Biology
Cancer Research

Background:

Hematopoietic stem cells (HSCs) generate all blood and immune cells.
HSCs reside within a specialized immune microenvironment.
Immune interactions with stem cells are crucial for health and disease.

Purpose of the Study:

To explore the nature of stem cells, particularly HSCs, within their immune microenvironment.
To investigate the implications of stem cell-immune interactions for current and future therapies.
To discuss the therapeutic potential of targeting immune-privileged states in leukemic stem cells (LSCs).

Main Methods:

Review of existing literature on stem cell-immune interactions.
Analysis of the concept of immune privilege in HSCs.
Exploration of cancer immunotherapy advancements and their relation to stem cells.

Main Results:

Stem cell-immune interactions are dynamic and change during stress and injury.
Cancer cells are not always immunotolerant; immunosurveillance eliminates pre-cancerous cells.
Stem cells play a critical role in cancer initiation, persistence, and therapy resistance.

Conclusions:

Understanding the immune microenvironment of stem cells is vital for developing novel cancer therapies.
Leukemic stem cells may inherit an immune-privileged state from HSCs, impacting treatment.
Stem cells represent a critical nexus in cancer prevention versus development through immune system interplay.