Immunophenotypic and functional characterization of CD33+CD34+ cells in human cord blood of preterm neonates

Cheng Hao Jin, Hidetoshi Takada, Akihiko Nomura, Yasushi Takahata, Hideki Nakayama, Makoto Kajiwara, Hitoo Nakano, Toshiro Hara

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Objective To characterize CD33+CD34+ cells, a major population in human cord blood (CB) CD34+ cells of preterm neonates. Materials and methods The proportion of CD33+ cells was analyzed on CB CD34+ cells from preterm and full-term neonates. CD33+CD34+ cells were purified by cell sorting and analyzed on their clonogenic activity, proliferative activity in short-time liquid suspension culture, and GATA-2 mRNA expression by RT-PCR and Southern blot. Results The absolute numbers and proportion of CD34+ cells in mononuclear cells inversely correlated with gestational age. CD33 was expressed on a majority of CB CD34+ cells of preterm neonates but on only a minor population of them in full-term neonates. In addition, CD33 was dominantly expressed on CD38-CD34+ cells or CD117(low)CD34+ cells in CB of preterm neonates. CD33+CD34+ cells of preterm cord blood had high proliferative and reproducible potentials compared with CD33-CD34+ cells. CD33+CD34+ cells as well as CD33-CD34+ cells from preterm CB highly expressed GATA-2, in contrast to those from BM. Conclusions These results suggest that CD33+CD34+ cells, which are a major population in CB CD34+ cells of preterm neonates, do not simply represent relatively mature myeloid lineage hematopoietic progenitor cells as those in adult BM CD34+ cells, and may contain hematopoietic stem cells or primitive progenitor cells as in fetal liver. (C) 2000 International Society for Experimental Hematology.

Original languageEnglish
Pages (from-to)1174-1180
Number of pages7
JournalExperimental Hematology
Volume28
Issue number10
DOIs
Publication statusPublished - Oct 1 2000

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Fetal Blood
Blood Cells
Hematopoietic Stem Cells
Population
Southern Blotting
Gestational Age
Suspensions
Stem Cells

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Hematology
  • Genetics
  • Cell Biology
  • Cancer Research

Cite this

Jin, C. H., Takada, H., Nomura, A., Takahata, Y., Nakayama, H., Kajiwara, M., ... Hara, T. (2000). Immunophenotypic and functional characterization of CD33+CD34+ cells in human cord blood of preterm neonates. Experimental Hematology, 28(10), 1174-1180. https://doi.org/10.1016/S0301-472X(00)00519-1

Immunophenotypic and functional characterization of CD33+CD34+ cells in human cord blood of preterm neonates. / Jin, Cheng Hao; Takada, Hidetoshi; Nomura, Akihiko; Takahata, Yasushi; Nakayama, Hideki; Kajiwara, Makoto; Nakano, Hitoo; Hara, Toshiro.

In: Experimental Hematology, Vol. 28, No. 10, 01.10.2000, p. 1174-1180.

Research output: Contribution to journalArticle

Jin, CH, Takada, H, Nomura, A, Takahata, Y, Nakayama, H, Kajiwara, M, Nakano, H & Hara, T 2000, 'Immunophenotypic and functional characterization of CD33+CD34+ cells in human cord blood of preterm neonates', Experimental Hematology, vol. 28, no. 10, pp. 1174-1180. https://doi.org/10.1016/S0301-472X(00)00519-1
Jin, Cheng Hao ; Takada, Hidetoshi ; Nomura, Akihiko ; Takahata, Yasushi ; Nakayama, Hideki ; Kajiwara, Makoto ; Nakano, Hitoo ; Hara, Toshiro. / Immunophenotypic and functional characterization of CD33+CD34+ cells in human cord blood of preterm neonates. In: Experimental Hematology. 2000 ; Vol. 28, No. 10. pp. 1174-1180.
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