Linked Life Data

6173265

Source:http://linkedlifedata.com/resource/pubmed/id/6173265

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1982-4-22
pubmed:abstractText
Cloning of the rat basophilic leukemia (RBL) cell lines demonstrates variability in cell chromosome number (approximately 44-70) and in their capacity to release histamine following an IgE- or Ca2+-ionophore stimulus. After IgE activation there is increased phospholipid methylation, Ca2+ influx, arachidonic acid, and histamine release. On Ca2+ ionophore A23187 stimulation, phospholipid methylation is not increased, but Ca2+ influx, arachidonic acid, and histamine release occur. Variants of the RBL-cloned sublines defective at different stages in the release process were obtained and used to sequence the different events in the release process: IgE activation is followed by methylation, Ca2+ influx, arachidonic acid, and histamine release. However, there are other variants with defects in intermediate steps in the pathway, e.g., increased phospholipid methylation that is not followed by Ca2+ influx or arachidonic acid release not followed by histamine release. Isolating variants carrying drug-resistance markers made hybridization (reconstitution) experiments possible. Two variants were recognized, each of which was deficient in one of the two phospholipid methyltransferase enzymes. Neither of these two variants released histamine; hybrids formed by fusion of these two cell lines have both phospholipid methyltransferase enzymes and release histamine. By other complementation experiments, groups of variants with defects at different steps in the histamine release sequence were recognized. Clearly, these basophilic leukemia cell lines provide a unique system for the study of the mechanism of histamine release.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0014-9446
pubmed:author
pubmed:issnType
Print
pubmed:volume
41
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
30-4
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1982
pubmed:articleTitle
Variants of the rat basophilic leukemia cell line for the study of histamine release.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.