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Related Concept Videos

Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Abnormal Proliferation02:23

Abnormal Proliferation

Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
Structure and Function of Platelets01:18

Structure and Function of Platelets

The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
Production of Formed Elements01:34

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...
Hematopoiesis01:21

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 Hematopoiesis01:20

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...

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Isolation of Mouse Megakaryocyte Progenitors
10:30

Isolation of Mouse Megakaryocyte Progenitors

Published on: May 20, 2021

Normal and malignant megakaryopoiesis.

Qiang Wen1, Benjamin Goldenson, John D Crispino

  • 1Division of Hematology/Oncology, Northwestern University, Chicago, IL, USA.

Expert Reviews in Molecular Medicine
|October 25, 2011
PubMed
Summary
This summary is machine-generated.

This review details megakaryopoiesis, the process of megakaryocyte development and platelet production. It highlights polyploidization and gene regulation in megakaryocytes, relevant to blood cancers.

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Immunophenotyping and Cell Sorting of Human MKs from Human Primary Sources or Differentiated In Vitro from Hematopoietic Progenitors
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Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
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Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells

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Related Experiment Videos

Last Updated: May 28, 2026

Isolation of Mouse Megakaryocyte Progenitors
10:30

Isolation of Mouse Megakaryocyte Progenitors

Published on: May 20, 2021

Immunophenotyping and Cell Sorting of Human MKs from Human Primary Sources or Differentiated In Vitro from Hematopoietic Progenitors
14:30

Immunophenotyping and Cell Sorting of Human MKs from Human Primary Sources or Differentiated In Vitro from Hematopoietic Progenitors

Published on: August 7, 2021

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells
09:46

Megakaryocyte Differentiation and Platelet Formation from Human Cord Blood-derived CD34+ Cells

Published on: December 27, 2017

Area of Science:

  • Hematology
  • Cell Biology
  • Molecular Biology

Background:

  • Megakaryopoiesis is crucial for platelet production and hemostasis.
  • Recent advances have elucidated molecular mechanisms of megakaryocyte (MK) development.
  • MKs play a role in hematologic malignancies.

Purpose of the Study:

  • To provide an overview of megakaryopoiesis.
  • To summarize recent developments in MK differentiation.
  • To discuss the biology and genetics of MK-related blood disorders.

Main Methods:

  • Literature review focusing on molecular mechanisms.
  • Analysis of polyploidization and gene regulation in megakaryocytes.
  • Discussion of acute megakaryocytic leukemia, essential thrombocythemia, and primary myelofibrosis.

Main Results:

  • Polyploidization is a unique cell cycle allowing MKs to increase DNA content.
  • Specific genes regulate polyploidization during megakaryopoiesis.
  • Understanding normal MK differentiation offers insights into disease pathogenesis.

Conclusions:

  • Continued research into megakaryopoiesis and its genetic regulation is vital.
  • Insights into MK biology can inform novel therapeutic strategies for blood disorders.
  • Further understanding will benefit patients with acute megakaryocytic leukemia and myeloproliferative neoplasms.