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Related Concept Videos

Hematopoiesis01:21

Hematopoiesis

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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...
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Overview of Hematopoiesis01:20

Overview of Hematopoiesis

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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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Related Experiment Video

Updated: Feb 12, 2026

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis
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Latexin and hematopoiesis.

Cuiping Zhang1, Ying Liang

  • 1Departments of Toxicology and Cancer Biology, University of Kentucky, Lexington, Kentucky, USA.

Current Opinion in Hematology
|April 3, 2018
PubMed
Summary
This summary is machine-generated.

Latexin naturally limits hematopoietic stem cell (HSC) numbers by promoting apoptosis. Its absence enhances HSC survival and regeneration, offering potential for treating blood disorders and cancer.

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Area of Science:

  • Hematology
  • Stem Cell Biology
  • Molecular Regulation

Background:

  • Hematopoietic stem cells (HSCs) are crucial for lifelong blood cell production.
  • Natural genetic variations provide insights into HSC regulation and hematopoiesis.
  • Latexin, identified through natural variation, plays a regulatory role in HSCs.

Purpose of the Study:

  • To explore the function of latexin in regulating homeostatic and stress hematopoiesis.
  • To elucidate the signaling pathways influenced by latexin.
  • To propose potential therapeutic applications of targeting latexin.

Main Methods:

  • In vivo studies involving latexin deletion in mice.
  • Analysis of HSC population dynamics, apoptosis, and self-renewal.
  • Investigation of downstream signaling pathways including thrombospondin 1 (Thbs1) and ribosomal protein subunit 3 (Rps3).

Main Results:

  • Latexin negatively regulates HSC numbers by increasing apoptosis and decreasing self-renewal.
  • Latexin deletion enhances HSC repopulation, survival, and mitigates myelosuppression.
  • Latexin inactivation affects Thbs1 and Rps3 pathways, sensitizing cells to radiation, though its role in cancer remains unclear.

Conclusions:

  • Understanding latexin's regulation of HSCs advances knowledge of HSC biology.
  • Targeting latexin may offer novel therapeutic strategies for hematopoietic regeneration.
  • Further research is needed to clarify latexin's role in tumorigenesis and its precise mechanism in signaling pathways.