Functional characterization of highly purified human hematopoietic repopulating cells isolated according to aldehyde dehydrogenase activity

David A. Hess, Todd E. Meyerrose, Louisa Wirthlin, Timothy P. Craft, Phillip E. Herrbrich, Michael H. Creer, Jan Nolta

Research output: Contribution to journalArticle

283 Scopus citations

Abstract

Human hematopoietic stem cells (HSCs) are commonly purified by the expression of cell surface markers such as CD34. Because cell phenotype can be altered by cell cycle progression or ex vivo culture, purification on the basis of conserved stem cell function may represent a more reliable way to isolate various stem cell populations. We have purified primitive HSCs from human umbilical cord blood (UCB) by lineage depletion (Lin-) followed by selection of cells with high aldehyde dehydrogenase (ALDH) activity. ALDH hiLin- cells contained 22.6% ± 3.0% of the Lin - population and highly coexpressed primitive HSC phenotypes (CD34+ CD38- and CD34+CD133+). In vitro hematopoietic progenitor function was enriched in the ALDH hiLin- population, compared with ALDHloLin - cells. Multilineage human hematopoietic repopulation was observed exclusively after transplantation of ALDHhiLin- cells. Direct comparison of repopulation with use of the nonobese diabetic/severe combined immunodeficient (NOD/SCID) and NOD/SCID β2 microglobulin (β2M) null models demonstrated that 10-fold greater numbers of ALDH hiLin- cells were needed to engraft the NOD/SCID mouse as compared with the more permissive NOD/SCID β2M null mouse, suggesting that the ALDHhiLin- population contained committed progenitors as well as primitive repopulating cells. Cell fractionation according to lineage depletion and ALDH activity provides a viable and prospective purification of HSCs on the basis of cell function rather than cell surface phenotype.

Original languageEnglish (US)
Pages (from-to)1648-1655
Number of pages8
JournalBlood
Volume104
Issue number6
DOIs
StatePublished - Sep 15 2004
Externally publishedYes

ASJC Scopus subject areas

  • Hematology

Fingerprint Dive into the research topics of 'Functional characterization of highly purified human hematopoietic repopulating cells isolated according to aldehyde dehydrogenase activity'. Together they form a unique fingerprint.

  • Cite this