J Korean Med Sci.  1999 Oct;14(5):520-525. 10.3346/jkms.1999.14.5.520.

Comparison of CD34+ subsets and clonogenicity in human bone marrow, granulocyte colony-stimulating factor-mobilized peripheral blood, and cord blood

• Cho SH
• Chung IJ
• Lee JJ
• Park ML
• Kim HJ

• KMID: 646019
• DOI: http://doi.org/10.3346/jkms.1999.14.5.520

Abstract

To compare the clonogenicity and distribution of CD34+ subsets in bone marrow (BM), granulocyte colony-stimulating factor (G-CSF) mobilized peripheral blood (PB) and cord blood (CB), we analyzed in vitro colony formation and CD34+ cells co-expressing differentiation molecules (CD38, HLA-DR), myeloid associated molecules (CD13, CD33), a T-cell associated molecule (CD3), and a B-cell associated molecule (CD19) from mononuclear cells (MNCs) in the three compartments. The proportions of CD34+CD38- cells (BM: 4.4+/-2.8%, PB: 5.3+/-2.1%, CB: 5.9+/-3.9%) and CD34+HLA-DR cells (BM: 4.7+/-3.4%, PB: 5.5+/-2.3%, CB: 6.1+/-3.7%) did not differ significantly among the compartments. In contrast, a significantly higher proportion of CD34 cells of PB and CB co-expressed CD13 (75.0+/-11.4%, 77.7+/-17.3%) and CD33 (67.1 +/-5.7%, 56.8+/-10.3%) compared with those of BM (43.0+/-6.3%, 27.6+/-5.1%) and a significantly higher number of granulocyte-macrophage colony-forming units (CFU-GM) and erythroid burst-forming units (BFU-E) were detected in MNCs derived from PB and CB compared with those from BM (p<0.01). The proportion of CD34+CD19+ cells was higher in BM (34.9+/-11.9%) than those in PB (5.6+/-3.0%) and CB (4.7=2.1%) (p<0.05). The proportion of CD34+CD3+ was comparable in all three compartments. In conclusion, our findings show that MNCs of mobilized PB and CB display similar phenotypic profiles of CD34+ subsets and clonogenicity, different from those of BM.

Keyword

Antigens, CD34; Stem cells; Granulocyte-macrophage colony-stimulating factor; Erythroid progenitor cells

MeSH Terms

Adult
Antigens, CD34/immunology*
Bone Marrow/immunology*
Colony-Forming Units Assay
Comparative Study
Fetal Blood/immunology*
Flow Cytometry
Granulocyte Colony-Stimulating Factor/pharmacology
HLA-DR Antigens/immunology
Hematopoietic Stem Cells/immunology*
Human
Leukocytes, Mononuclear/immunology
Lymphocyte Subsets/immunology
Male
Phenotype
Reference Values