Linked Life Data

9450813

Source:http://linkedlifedata.com/resource/pubmed/id/9450813

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1998-2-27
pubmed:abstractText
In the present study we investigated the proliferative response of megakaryocyte progenitor cells (CFU-MK) derived from peripheral blood stem cell (PBSC) collections of patients with haematological malignancies and normal donors. Highly purified CD34+ cells and mononuclear cell fractions were assayed in the presence of recombinant interleukin-3 (IL-3) and pegylated-recombinant human megakaryocyte growth and development factor (PEG-rHuMGDF), alone or in combination, and megakaryocyte colony formation was evaluated in the plasma clot. In comparison, steady-state bone marrow samples from normal donors were highly enriched in CD34+ cells and tested with the cytokines studied. Our results showed that IL-3 was able to stimulate CFU-MK colony formation from bone marrow and peripheral blood CD34+ cells. Similarly, PEG-rHuMGDF stimulated, in a dose-response manner, CD34+ cells from the bone marrow. However, normal mobilized peripheral blood CD34+ cells were not induced to generate CFU-MK colonies by PEG-rHuMGDE The same lack of response was observed when patients peripheral blood CD34+ cells primed with chemotherapy plus G-CSF or with G-CSF alone were assessed. In contrast, PEG-rHuMGDF stimulated CFU-MK growth when mononuclear cells, either from the bone marrow or from mobilized peripheral blood, were grown in plasma clot. Moreover, we analysed by flow cytometry the expression of Mpl receptor on the cell membrane of normal mobilized peripheral blood and normal steady-state bone marrow CD34+ cells. Our results showed a reduced expression of Mpl receptor on mobilized peripheral blood progenitor cells in comparison with bone marrow cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
http://linkedlifedata.com/resource/pubmed/chemical/Antigens, CD34, http://linkedlifedata.com/resource/pubmed/chemical/Granulocyte Colony-Stimulating..., http://linkedlifedata.com/resource/pubmed/chemical/Interleukin-3, http://linkedlifedata.com/resource/pubmed/chemical/MPL protein, human, http://linkedlifedata.com/resource/pubmed/chemical/Neoplasm Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Polyethylene Glycols, http://linkedlifedata.com/resource/pubmed/chemical/Proto-Oncogene Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Cytokine, http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Thrombopoietin, http://linkedlifedata.com/resource/pubmed/chemical/Recombinant Proteins, http://linkedlifedata.com/resource/pubmed/chemical/Thrombopoietin, http://linkedlifedata.com/resource/pubmed/chemical/polyethylene glycol-recombinant...
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0007-1048
pubmed:author
pubmed:issnType
Print
pubmed:volume
100
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
207-18
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Megakaryocyte progenitors derived from bone marrow or G-CSF-mobilized peripheral blood CD34 cells show a distinct phenotype and responsiveness to interleukin-3 (IL-3) and PEG-recombinant human megakaryocyte growth and development factor (PEG-rHuMGDF).
pubmed:affiliation
Istituto di Ematologia e Oncologia Medica L. e A. Seràgnoli, University of Bologna, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't