Linked Life Data

11437486

Source:http://linkedlifedata.com/resource/pubmed/id/11437486

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2001-7-4
pubmed:abstractText
The internalization into CHO-K1 fibroblasts of three polyreactive monoclonal IgG2a anti-DNA autoantibodies (mAbs), F14.6, J20.8 and F4.1, isolated from the same unimmunized (NZBxNZW) F1 mouse, and synthetic peptides derived from F4.1 was studied using a technique which quantifies nuclear accumulation. The localization of the mAbs was intranuclear. We compared the influence of two negatively-charged molecules, DNA or heparin. At low concentrations, DNA had dual effects-inhibitory or stimulatory-depending on the mAb. Heparin was inhibitory or had no effect. The possibility that proteoglycans are 'receptors' recognized by anti-DNA mAbs which bind through heparin-sensitive reactions, was explored. Only F4.1 internalization was partly inhibited in glycosaminoglycan-deficient cells. We propose that the complex alterations of internalization patterns of these polyreactive mAbs by the two negatively charged molecules can be explained by (a) the potential of polyreactive mAbs to bind to various charge (or conformation-) dependent 'receptors', (b) the potential of a subclass of mAbs complexed with DNA to utilize additional 'receptor(s)'. Glycosaminoglycans were required for internalization of F4.1-derived peptides, which remained extranuclear, suggesting that nuclear internalization of mAb F4.1 is a multistep process that requires certain sequences present on the intact mAb.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0896-8411
pubmed:author
pubmed:copyrightInfo
Copyright 2001 Academic Press.
pubmed:issnType
Print
pubmed:volume
16
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
383-91
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
DNA and heparin alter the internalization process of anti-DNA monoclonal antibodies according to patterns typical of both the charged molecule and the antibody.
pubmed:affiliation
Unité de Génétique Somatique (URA CNRS 1960), Institut Pasteur, 28 rue du Dr Roux, Paris, Cedex 15, 75724, France. avrameasalex@yahoo.fr
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't