Hematopoietic and endothelial progenitor cell trafficking in patients with myeloproliferative diseases

Oppliger Leibundgut, Elisabeth; Horn, Michael Peter; Brunold, Claudio; Pfanner-Meyer, Brigitte; Marti, Dorothee; Hirsiger, Hans; Tobler, Andreas; Zwicky, Caroline (2006). Hematopoietic and endothelial progenitor cell trafficking in patients with myeloproliferative diseases. Haematologica - the hematology journal, 91(11), pp. 1465-72. Pavia: Ferrata-Storti Foundation

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BACKGROUND AND OBJECTIVES. The presence of circulating hematopoietic progenitor cells in patients with myeloproliferative diseases (MPD) has been described. However, the exact nature of such progenitor cells has not been specified until now. The aim of this work was to investigate the presence of endothelial precursor cells in the blood of patients with MPD and to assess the role of the endothelial cell lineage in the pathophysiology of this disease. DESIGN AND METHODS. Endothelial progenitor cell marker expression (CD34, prominin (CD133), kinase insert domain receptor (KDR) or vascular endothelial growth factor receptor 2 (VEGFR2), and von Willebrand factor) was assessed in the blood of 53 patients with MPD by quantitative polymerase chain reaction. Clonogenic stem cell assays were performed with progenitor cells and monocytes to assess differentiation towards the endothelial cell lineage. The patients' were divided according to whether they had essential thrombocythemia (ET, n=17), polycythemia vera (PV, n=21) or chronic idiopathic myelofibrosis (CIMF, n=15) and their data compared with data from normal controls (n=16) and patients with secondary thrombo- or erythrocytosis (n=17). RESULTS. Trafficking of CD34-positive cells was increased above the physiological level in 4/17 patients with ET, 5/21 patients with PV and 13/15 patients with CIMF. A subset of patients with CIMF co-expressed the markers CD34, prominin (CD133) and KDR, suggesting the presence of endothelial precursors among the circulating progenitor cells. Clonogenic stem cell assays confirmed differentiation towards both the hematopoietic and the endothelial cell lineage in 5/10 patients with CIMF. Furthermore, the molecular markers trisomy 8 and JAK2 V617F were found in the grown endothelial cells of patients positive for trisomy 8 or JAK2 V617F in the peripheral blood, confirming the common clonal origin of both hematopoietic and endothelial cell lineages. INTERPRETATION AND CONCLUSIONS. Endothelial precursor cells are increased in the blood of a subset of patients with CIMF, and peripheral endothelial cells bear the same molecular markers as hematopoietic cells, suggesting a primary role of pathological endothelial cells in this disease.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Haematology and Central Haematological Laboratory
UniBE Contributor:	Oppliger Leibundgut, Elisabeth, Horn, Michael Peter, Zwicky, Caroline
ISSN:	0390-6078
ISBN:	17082007
Publisher:	Ferrata-Storti Foundation
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:47
Last Modified:	05 Dec 2022 14:14
PubMed ID:	17082007
Web of Science ID:	000241799600011
URI:	https://boris.unibe.ch/id/eprint/19338 (FactScience: 1874)