Linked Life Data

6096025

Source:http://linkedlifedata.com/resource/pubmed/id/6096025

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1985-2-4
pubmed:abstractText
The expression of transferrin receptors on murine peritoneal macrophages has been shown to be down regulated during functional activation in vivo. This observation suggested that the level of transferrin receptor expression varies in response to discrete extracellular signals known to induce macrophage activation. We have tested this concept directly and have shown that decreased transferrin receptor expression can be reproduced in vitro by treatment of inflammatory macrophages with preparations of interferon gamma derived from a T cell hybridoma supernatant. The ability of this agent to down regulate the expression of the transferrin receptor exhibited dose and time dependencies similar to those required for development of other macrophage functions in vitro. The addition of LPS produced no further decrease in receptor expression. Furthermore, murine gamma interferon, produced by recombinant DNA technology also caused a downshift in transferrin receptor expression at doses similar to those which have been shown previously to induce activation. The changes in receptor activity were the result of altered numbers of binding sites and the receptor:ligand affinity remained unaffected. These results indicate that altered expression of the transferrin receptor is one element of the pleiotypic change which macrophages undergo in response to IFN gamma. This system may, therefore, provide a useful model in which to study the biochemical basis of IFN gamma action in mononuclear phagocytes.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0008-8749
pubmed:author
pubmed:issnType
Print
pubmed:volume
89
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
478-88
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Expression of the transferrin receptor on murine peritoneal macrophages is modulated by in vitro treatment with interferon gamma.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.