Runx1 expression marks long-term repopulating hematopoietic stem cells in the midgestation mouse embryo

Trista E. North, Marella F T R De Bruijn, Terryl Stacy, Laleh Talebian, Evan Lind, Catherine Robin, Michael Binder, Elaine Dzierzak, Nancy A. Speck

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412 Scopus citations

Abstract

Hematopoietic stem cells (HSCs) are first found in the aorta-gonad-mesonephros region and vitelline and umbilical arteries of the midgestation mouse embryo. Runx1 (AML1), the DNA binding subunit of a core binding factor, is required for the emergence and/or subsequent function of HSCs. We show that all HSCs in the embryo express Runx1. Furthermore, HSCs in Runx1+/- embryos are heterogeneous and include CD45+ cells, endothelial cells, and mesenchymal cells. Comparison with wild-type embryos showed that the distribution of HSCs among these various cell populations is sensitive to Runx1 dosage. These data provide the first morphological description of embryonic HSCs and contribute new insight into their cellular origin.

Original languageEnglish (US)
Pages (from-to)661-672
Number of pages12
JournalImmunity
Volume16
Issue number5
DOIs
Publication statusPublished - 2002
Externally publishedYes

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ASJC Scopus subject areas

  • Immunology and Allergy
  • Infectious Diseases
  • Immunology

Cite this

North, T. E., De Bruijn, M. F. T. R., Stacy, T., Talebian, L., Lind, E., Robin, C., ... Speck, N. A. (2002). Runx1 expression marks long-term repopulating hematopoietic stem cells in the midgestation mouse embryo. Immunity, 16(5), 661-672. https://doi.org/10.1016/S1074-7613(02)00296-0