Linked Life Data

8441915

Source:http://linkedlifedata.com/resource/pubmed/id/8441915

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1993-3-31
pubmed:abstractText
Binding of antigen to receptor complexes on B cells elicits a cascade of intracellular signalling events leading to proliferation and, together with T-cell help, Ig secretion. Components of the antigen receptor (AgR) complex have been demonstrated to be either covalently bound or associated with surface Ig (sIg) molecules. The function of these proteins is still unknown. In order to address this question, we have stimulated B cells with anti-mu antibodies and have studied possible changes in the expression of AgR complexes. After anti-mu stimulation, the IgM molecules disappeared rapidly from the cell surface together with the covalently bound proteins. The IgM molecules were internalized and probably degraded. The IgM-associated heterodimer Ig-alpha/Ig-beta was also removed from the cells, leaving the IgD-associated heterodimer unaffected. Two proteins showed an enhanced association with sIg after 15 min and then were gradually removed from the cell surface. Two other proteins became increasingly attached to sIg. This association remained stable for the rest of the culture period (up to 4 h). Further studies are underway to characterize these proteins more closely and to examine possible interactions with downstream members of the signalling cascade.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0300-9475
pubmed:author
pubmed:issnType
Print
pubmed:volume
37
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
277-81
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Changes in the expression of Ig-associated proteins on B lymphocytes activated by anti-IgM antibodies.
pubmed:affiliation
Paul-Ehrlich-Institut, Langen, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't