Linked Life Data

1379620

Source:http://linkedlifedata.com/resource/pubmed/id/1379620

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1992-9-8
pubmed:abstractText
Blast cell colonies can be grown reproducibly in methylcellulose from normal human mononuclear bone marrow cells (MNC) in the presence of 30% human plasma, 1 U human recombinant erythropoietin and 10% of medium conditioned by phytohemagglutinin stimulated leukocytes as a source of growth factors. The colonies can be recognized by inverted microscopy by their display of highly refractile cytoplasmic structures that resemble small vacuoles. A proportion of cells within these colonies remains CD34-positive (CD34+). The blast-like morphology of these cells was sustained for at least 14 to 21 days. The frequency of blast cell colony forming units (CFU-BL) can be increased by a series of separation procedures to produce E-rosette depleted, nonadherent cells (E-NAC), CD34+ cells and CD33-CD34+ cells. The mean number of CFU-BL per 10(5) cells was 1.9 +/- 1.6 in MNC, 5.7 +/- 2.7 in E-NAC, 108 +/- 51 in CD34+ cells and 112 +/- 109 in CD33-CD34+ cells. The enrichment procedures were not specific for CFU-BL but also resulted in a similar increase of multilineage and single lineage progenitors. The relative proportions of CFU-BL and other progenitors remained unchanged among these subpopulations. The size of individual blast cell colonies on day 16 varied from 20 to 1,600 cells. After 14 to 21 days, cells within blast cell colonies acquired mature morphological features. The majority of blast cell colonies developed into multilineage colonies (62%); some (38%) were restricted to a single hemopoietic lineage. Larger blast cell colonies had a higher probability of developing into multilineage colonies than smaller blast cell colonies.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0737-1454
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
241-8
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Differentiation profiles of normal blast cell colonies derived from mononucleated cells, T cell depleted nonadherent cells and CD33-negative, CD34-positive normal human bone marrow cells.
pubmed:affiliation
Ontario Cancer Institute, University of Toronto, Canada.
pubmed:publicationType
Journal Article