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Hemangioblast development and regulation.

K Choi1

  • 1Washington University, School of Medicine, Department of Pathology, St. Louis, MO 63110, USA. kchoi@pathology.wustl.edu

Biochemistry and Cell Biology = Biochimie Et Biologie Cellulaire
|July 7, 1999
PubMed
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Embryonic hematopoiesis involves a common progenitor, the hemangioblast, originating from mesoderm. This review explores hematopoietic commitment and mesoderm-inducing factors in early development.

Area of Science:

  • Developmental Biology
  • Hematopoiesis
  • Cell Lineage Commitment

Background:

  • Hematopoietic and endothelial cells arise early from mesoderm.
  • Molecular and cellular events driving hematopoietic commitment are poorly understood.
  • Embryonic hematopoiesis occurs in both yolk sac and embryo proper.

Purpose of the Study:

  • To review the establishment of the hematopoietic system during embryonic development.
  • To focus on the hemangioblast as a primitive hematopoietic progenitor.
  • To discuss mesoderm-inducing factors in hematopoietic lineage commitment.

Main Methods:

  • Review of recent studies utilizing gene-targeted mice.
  • Analysis of data from in vitro systems.
  • Synthesis of current knowledge on embryonic hematopoiesis.

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Main Results:

  • Formal demonstration of the hemangioblast, a common hematopoietic and endothelial progenitor.
  • Understanding of embryonic hematopoiesis occurring in extra-embryonic and intra-embryonic sites.
  • Advancement in comprehending hematopoietic commitment from mesoderm.

Conclusions:

  • The hemangioblast is a key primitive hematopoietic progenitor.
  • Mesoderm-inducing factors play a role in hematopoietic lineage commitment.
  • Further research is needed to fully elucidate early hematopoietic development.