Linked Life Data

12182453

Source:http://linkedlifedata.com/resource/pubmed/id/12182453

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2002-8-16
pubmed:abstractText
Ly49 antigens, interacting with MHC class I molecules, enable NK cells to distinguish "self" from "non-self". Here, we investigated the activating receptor Ly49 D after allogeneic bone marrow transplantation (BMT). After transplantation of B6 bone marrow (BM) into BALB/c recipients we observed a significant reduction of Ly49 D+ NK cells and a decreased density of expression. We found a nonstochastic distribution of Ly49 D with Ly49 G2. In contrast to reduced coexpression with Ly49 A, a constant rate of Ly49 G2 on Ly49 D+ NK cells was observed in allogeneic chimeras. Cytotoxicity was reduced during the first two months after BMT After this time allogeneic chimeras showed tolerance against host-specific targets. We conclude that NK cells are able to shape their Lys49 repertoire fitting to a new environment after allogeneic BMT. This alteration seems to depend on the presence of new corresponding MHC class I molecules resulting in downregulation of respective receptors on donor cells. Analysing coexpression of Ly49 D and Ly49 G2, we found a relationship between these two receptors, showing a distinct effect after allogeneic BMT. Functional data indicate that a time of reduced NK cell cytotoxicity after BMT is followed by in vitro tolerance of allogeneic chimeras.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0171-2985
pubmed:author
pubmed:issnType
Print
pubmed:volume
205
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
267-81
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2002
pubmed:articleTitle
Modulation of Ly49 D expression after allogeneic bone marrow transplantation and functional consequences.
pubmed:affiliation
Abteilung Klinische Immunologie, Medizinische Hochschule Hannover, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't