Identification of Lin–Sca1+kit+CD34+Flt3– short-term hematopoietic stem cells capable of rapidly reconstituting and rescuing myeloablated transplant recipients

DOI PDF 15 Citations
  • Liping Yang
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.
  • David Bryder
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.
  • Jörgen Adolfsson
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.
  • Jens Nygren
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.
  • Robert Månsson
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.
  • Mikael Sigvardsson
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.
  • Sten Eirik W. Jacobsen
    From the Hematopoietic Stem Cell Laboratory, Lund Strategic Research Center for Stem Cell Biology and Cell Therapy, Lund University, Lund, Sweden.

Abstract

<jats:title>Abstract</jats:title><jats:p>In clinical bone marrow transplantation, the severe cytopenias induced by bone marrow ablation translate into high risks of developing fatal infections and bleedings, until transplanted hematopoietic stem and progenitor cells have replaced sufficient myeloerythroid offspring. Although adult long-term hematopoietic stem cells (LT-HSCs) are absolutely required and at the single-cell level sufficient for sustained reconstitution of all blood cell lineages, they have been suggested to be less efficient at rapidly reconstituting the hematopoietic system and rescuing myeloablated recipients. Such a function has been proposed to rather be mediated by less well-defined short-term hematopoietic stem cells (ST-HSCs). Herein, we demonstrate that Lin–Sca1+kithiCD34+ short-term reconstituting cells contain 2 phenotypically and functionally distinct subpopulations: Lin–Sca1+kithiCD34+flt3– cells fulfilling all criteria of ST-HSCs, capable of rapidly reconstituting myelopoiesis, rescuing myeloablated mice, and generating Lin–Sca1+kithiCD34+flt3+ cells, responsible primarily for rapid lymphoid reconstitution. Representing the first commitment steps from Lin–Sca1+kithi CD34–flt3– LT-HSCs, their identification will greatly facilitate delineation of regulatory pathways controlling HSC fate decisions and identification of human ST-HSCs responsible for rapid reconstitution following HSC transplantations.</jats:p>

Journal

  • Blood

    Blood 105 (7), 2717-2723, 2005-04-01

    American Society of Hematology

Citations (15)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top