Clonogenicity, gene expression and phenotype during neutrophil versus erythroid differentiation of cytokine-stimulated CD34 human marrow cells in vitro.

Summary, in English

With the objective to correlate clonogenicity, gene expression and phenotype during differentiation, human bone marrow CD34+ cells were cultured in vitro to stimulate erythroid or neutrophil development, and sorted into five subpopulations according to their surface expression of CD15/CD33 and blood group antigen A/CD117 respectively. Sorted cells were cultured in methylcellulose and analysed by real-time reverse transcription polymerase chain reaction for expression of neutrophil and erythroid marker genes. Surface expression of CD15 coincided with restriction to neutrophil/monocyte differentiation and A antigen with restriction to erythroid differentiation. GATA-2 mRNA was down-regulated during both neutrophil and erythroid maturation, whereas GATA-1, SCL, ABO, erythropoietin receptor, Kell, glycophorin A, β-globin and α-haemoglobin stabilizing protein were up-regulated during erythroid differentiation and silenced during neutrophil differentiation. CCAAT/enhancer-binding protein (C/EBP)-α, PU.1, granulocyte colony-stimulating factor receptor, PR3, C/EBP-e and lactoferrin were sequentially expressed during neutrophil differentiation but rapidly down-regulated during the early erythroid stages. Nuclear factor erythroid-derived 2 (NF-E2) and glycophorin C were expressed both during neutrophil and erythroid differentiation. Our data support the notion of early expression of several lineage-associated genes prior to actual lineage commitment, defined by surface expression of CD15 and A antigen as markers for definitive neutrophil/monocyte and erythroid differentiation respectively. Previous findings, primarily from cell lines and mouse models, have been extended to adult human haematopoiesis.

• Author: Louise Edvardsson; Josefina Dykes; Martin L Olsson; Tor Olofsson
• Department/s: Division of Hematology and Transfusion Medicine; Transfusion Medicine
• Publishing year: 2004
• Language: English
• Pages: 451-463
• Publication/Series: British Journal of Haematology
• Volume: 127
• Issue: 4
• Full text: - 460 kB; Download statistics
• Links: http://dx.doi.org/10.1111/j.1365-2141.2004.05227.x
• Document type: Journal article
• Publisher: Wiley-Blackwell
• Topic: Hematology
• Status: Published
• Research group: Transfusion Medicine
• ISBN/ISSN/Other: ISSN: 0007-1048