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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...

Overview of Hematopoiesis

Overview 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...

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...

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Related Experiment Video

Updated: May 14, 2026

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis

Published on: April 10, 2012

Visualizing human ESC-derived hematopoiesis.

Brandon K Hadland¹, Irwin D Bernstein

¹Fred Hutchinson Cancer Research Center.

|February 2, 2013

Summary

This summary is machine-generated.

Human embryonic stem cells (ESCs) can develop into blood cells through a process called hematopoiesis. This study used live imaging to track how blood cell potential emerges during this critical developmental transition.

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Last Updated: May 14, 2026

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis

Published on: April 10, 2012

Directed Differentiation of Hemogenic Endothelial Cells from Human Pluripotent Stem Cells

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Published on: March 31, 2021

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Directed Differentiation of Primitive and Definitive Hematopoietic Progenitors from Human Pluripotent Stem Cells

Published on: November 1, 2017

Area of Science:

Developmental biology
Stem cell research
Hematopoiesis

Background:

Hematopoiesis is the process of blood cell formation.
Human embryonic stem cells (hESCs) are a valuable model for studying early human development.
The transition from endothelial cells to hematopoietic stem cells is a key event in blood development.

Purpose of the Study:

To investigate the dynamic process of hematopoietic lineage potential during the endothelial to hematopoietic transition.
To track the development of blood cells from human embryonic stem cells at the single-cell level.

Main Methods:

Utilized live imaging techniques for real-time observation.
Employed single-cell analysis to monitor hematopoietic lineage potential.
Studied human embryonic stem cell differentiation models.

Main Results:

Demonstrated the sequential emergence of hematopoietic potential during differentiation.
Identified specific cellular behaviors associated with the endothelial to hematopoietic transition.
Provided high-resolution insights into early blood cell development.

Conclusions:

The study offers a detailed, dynamic view of hESC-derived hematopoiesis.
Live single-cell imaging is a powerful tool for dissecting developmental transitions.
Findings advance our understanding of blood formation and stem cell potential.