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Hematopoiesis: progenitors and their genetic program

F Dieterlen-Lièvre1

  • 1Institut d'Embryologie Cellulaire et Moléculaire du CNRS et du Collège de France, 49 bis, Avenue de la Belle Gabrielle, 94736, Nogent-sur-Marne Cedex, France. dieterle@infobiogen.fr

Current Biology : CB
|October 21, 1998
PubMed
Summary

Scientists discovered a new blood stem cell source from endothelial cells. The embryonic environment can also reprogram adult blood stem cells, offering new insights into hematopoiesis.

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Area of Science:

  • Hematology
  • Developmental Biology
  • Stem Cell Biology

Background:

  • Understanding blood cell development is crucial for treating hematological disorders.
  • Recent research has focused on the origins and plasticity of hematopoietic stem cells (HSCs).

Purpose of the Study:

  • To explore novel sources of hematopoietic progenitors.
  • To investigate the potential of the embryonic and fetal environment to influence HSC gene expression and function.

Main Methods:

  • Investigated the differentiation potential of endothelial cells towards hematopoietic lineages.
  • Examined gene expression profiles of adult HSCs exposed to embryonic and fetal microenvironments.

Main Results:

  • Identified a progenitor population for blood cells originating from endothelial cells.

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  • Demonstrated that the embryonic/fetal environment can reprogram gene expression in adult HSCs.

    • Conclusions:

    • Endothelial cells represent a potential source for hematopoietic progenitors.
    • The developmental environment plays a significant role in HSC plasticity and gene regulation, with implications for regenerative medicine.