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Production of Formed Elements

Production 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...

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...

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...

Lineage Commitment

Lineage Commitment

Commitment is the process whereby stem cells:

Differentiation of Common Myeloid Progenitor Cells

Differentiation of Common Myeloid Progenitor Cells

Common myeloid progenitors (CMPs) are oligopotent cells that can differentiate into granulocytes and macrophages. Granulocytes and macrophages are essential for protecting the body against bacterial, viral, or fungal infections. They migrate from the bone marrow into the circulating blood to reach specific tissue sites where they differentiate and help in immune surveillance. However, they survive only for a few days and must be continuously made available to the organism to maintain a robust...

Regulation of Angiogenesis and Blood Supply

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...

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Related Experiment Video

Updated: Jun 4, 2026

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

Published on: February 14, 2017

[Endothelial progenitor cells: what are we talking about?].

Matthieu Monge¹, Ziad A Massy, Anton Jan van Zonneveld

¹Nephrology and Einthoven Laboratory for Vascular Experimental Medicine, Nephrology department, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, Pays-Bas. m.monge@lumc.nl

Nephrologie & Therapeutique

|February 22, 2011

Summary

Endothelial progenitor cells (EPCs) are crucial in vascular health but lack standardized definitions and methods. This review clarifies in vitro protocols and their connection to chronic renal insufficiency.

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Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood

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Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood

Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood

Published on: April 13, 2012

Related Experiment Videos

Last Updated: Jun 4, 2026

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

Published on: February 14, 2017

Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood

Isolation of Endothelial Progenitor Cells from Human Umbilical Cord Blood

Published on: September 14, 2017

Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood

Phenotypic and Functional Characterization of Endothelial Colony Forming Cells Derived from Human Umbilical Cord Blood

Published on: April 13, 2012

Area of Science:

Cell Biology
Regenerative Medicine
Vascular Biology

Context:

Endothelial progenitor cells (EPCs) have been extensively studied since 1997.
Significant variability exists in EPC definition and experimental methodologies.
This ambiguity complicates research and clinical translation.

Purpose:

To review common in vitro protocols for studying EPCs.
To explore the relationship between EPCs and chronic renal insufficiency.
To provide clarity on EPC research methods.

Summary:

This review consolidates current in vitro techniques for endothelial progenitor cell research.
It examines the challenges posed by inconsistent definitions and study protocols.
The review highlights the specific links between EPC dysfunction and chronic kidney disease.

Impact:

Aims to standardize EPC research, improving reproducibility.
Facilitates better understanding of EPC roles in renal insufficiency.
Provides a foundation for developing novel diagnostics and therapeutics for kidney disease.