Linked Life Data

1861534

Source:http://linkedlifedata.com/resource/pubmed/id/1861534

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1991-9-4
pubmed:abstractText
The production of sulfated proteoglycans was compared in mature peripheral blood granulocytes and monocytes and HL-60 promyelocytic leukemia cells. We found that HL-60 cells synthesized 5-10 times more proteoglycans than peripheral blood leukocytes. Differentiation of HL-60 cells toward mature monocytes by treatment with 12-O-tetradecanoyl-phorbol-13-acetate (TPA) or towards granulocytes by treatment with retinoic acid or dibutyryl cyclic adenosine-3',5'-monophosphate (dbcAMP) resulted in a small (20-30%) decrease in sulfated proteoglycan biosynthesis. Chondroitin sulfate was found to be the predominant proteoglycan produced by monocytes, PMN and undifferentiated HL-60 cells. Differentiated HL-60 cells produced chondroitin sulfate as well as sulfated proteoglycans sensitive to nitrous acid degradation. Similar results were observed in TPA, dbcAMP and retinoic acid differentiated HL-60 cells indicating that the changes in proteoglycan biosynthesis observed were independent of the developmental pathway. Using specific monoclonal antibodies and flow cytometry, we also found that HL-60 cells and monocytes produced chondroitin-4-sulfate, chondroitin-6-sulfate and chondroitin-O-sulfate while PMN only produced chondroitin-4-sulfate. In addition, although there were no significant differences in antibody binding to undifferentiated and differentiated HL-60 cells, the tumor cells bound 5-20 times more of the antibodies than the peripheral blood leukocytes. Our data demonstrate that sulfated proteoglycan production by HL-60 cells is distinct from PMN and monocytes. In addition, the fact that differentiated HL-60 cells continue to synthesize larger amounts of the proteoglycans than the peripheral blood leukocytes indicates these cells have not completely matured.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0145-2126
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
515-23
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Distinct patterns of sulfated proteoglycan biosynthesis in human monocytes, granulocytes and myeloid leukemic cells.
pubmed:affiliation
Department of Environmental and Community Medicine, UMDNJ-Robert Wood Johnson Medical School, Rutgers University, Piscataway 08854.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.