Linked Life Data

8167178

Source:http://linkedlifedata.com/resource/pubmed/id/8167178

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1994-6-2
pubmed:abstractText
The presence of sugar receptors on human myeloid leukemia cells was comparatively assessed by a highly sensitive binding assay, employing a panel of 14 types of neoglycoenzymes (chemically glycosylated Escherichia coli beta-galactosidase). The selected carbohydrate ligands mainly encompass common components of natural glycoconjugates as mono- or disaccharides. The monocytoid cells of the THP-1 line, the very young myeloblasts and the myeloblasts of the lines KG-1a and KG-1, the promyelocytes of the HL-60 line, and the early myeloblasts/erythroblasts of the K-562 line displayed a nonuniform pattern of specific binding with quantitative differences at a fixed, nonsaturating concentration of the probes. Scatchard analysis in four cases corroborated the indication of cell-type-related differences between the various cell lines. To test whether the detectable cellular sugar-binding sites can mediate adhesion to glycoligands, a rather simple model matrix of nitrocellulose-immobilized neoglycoproteins was first used. In comparison to the carbohydrate-free carrier protein significant cell adhesion was observed primarily with neoglycoproteins that exposed galactose, N-acetylgalactosamine, N-acetylglucosamine, mannose, and fucose moieties among the 11 tested types of carbohydrate residue. Subsequently, human bone marrow stromal cell layers were tested as a model matrix with increased levels of physiological relevance and complexity. Mixtures of carbohydrate and neoglycoprotein were employed as inhibitors of an interaction via lectins between the stromal and the tumor cells. The carbohydrate-dependent alterations of this parameter revealed cell-type-associated properties. Tumor cell binding was significantly decreased for not more than two lines with the effective sugars, namely N-acetylgalactosamine, mannose, fucose, and sialic acid.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0939-5555
pubmed:author
pubmed:issnType
Print
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
125-32
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Carbohydrate-dependent binding of human myeloid leukemia cell lines to neoglycoenzymes, matrix-immobilized neoglycoproteins, and bone marrow stromal cell layers.
pubmed:affiliation
Institut für Physiologische Chemie, Tierärztliche Fakultät, Ludwig-Maximilians-Universität, Munich, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't