Related Experiment Video
Updated: Jul 20, 2026
22:06
Derivation of Hematopoietic Stem Cells from Murine Embryonic Stem Cells
Published on: February 25, 2007
The journey of developing hematopoietic stem cells
Hanna K A Mikkola1, Stuart H Orkin
1Department of Molecular, Cell and Developmental Biology, Jonsson Comprehensive Cancer Center, Institute for Stem Cell Biology and Medicine, University of California, Los Angeles, CA 90095, USA. hmikkola@mcdb.ucla.edu
Development (Cambridge, England)
|September 14, 2006
Summary
Hematopoietic stem cells (HSCs) develop through complex embryonic processes and niche interactions. Understanding these interactions is key to generating HSCs in vitro for clinical applications.
Area of Science:
- Developmental biology
- Stem cell biology
- Regenerative medicine
Background:
- Hematopoietic stem cells (HSCs) are crucial for blood formation and immune function.
- HSC development during embryogenesis involves migration through specific anatomical sites and niches.
- Embryonic niches provide essential signals for HSC maturation and self-renewal.
Purpose of the Study:
- To elucidate the complex interactions between developing HSCs and their embryonic niches.
- To understand the signaling mechanisms that support HSC establishment and self-renewal.
- To identify pathways that can be recapitulated for in vitro HSC generation.
Main Methods:
- Analysis of HSC development during embryogenesis.
- Investigation of cell migration patterns of HSC precursors.
- Study of niche-derived signals influencing HSC maturation and self-renewal.
Main Results:
- HSC development is a multi-stage process involving distinct anatomical locations.
- Specific embryonic niches are critical for the successful maturation and self-renewal of HSCs.
- Interactions within these niches regulate the conservation of HSC self-renewal ability.
Conclusions:
- Elucidating HSC-niche interactions is fundamental for understanding stem cell development.
- This knowledge is essential for recapitulating HSC generation from embryonic stem cells in vitro.
- Facilitating in vitro HSC generation and expansion holds significant clinical potential for regenerative medicine.
More Related Videos
Related Concept Videos
01:21Hematopoiesis
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...
01:20Overview of Hematopoiesis
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...
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...
01:19Multipotency 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...
01:21Lineage Commitment
Commitment is the process whereby stem cells:
01:34Production of Formed Elements
Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
Most HSCs commit to...
01:01Regulation 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...