Linked Life Data

10756085

Source:http://linkedlifedata.com/resource/pubmed/id/10756085

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2000-6-26
pubmed:abstractText
T cells isolated from islets of non-obese diabetic (NOD) mice are enriched for insulin-reactive cells. The great majority of these T cells recognize insulin B chain peptide (B:9-23). B:9-23 reactive T cell clones are diabetogenic and show a dramatic TCR alpha -chain restriction (predominant AV13S3). We have studied the reactivity of five different B:9-23 reactive T cell clones to truncated peptides and alanine substituted analogues of B:9-23. Amongst these AV13S3 T cell clones, one reacted with peptide B:9-16 and four with B:13-23. The two peptides have in common only four amino acids (B:13-16; EALY). Having defined minimal peptide epitopes, we evaluated a mutant insulin sequence (B:13 glutamine) which retains metabolic activity. As predicted, this single amino acid change abrogated T cell reactivity. In addition, we have created a modified I-A(g7)gene with the B:9-23 peptide covalently linked to I-A(g7). Antigen presenting cells transfected with this construct were excellent presenting cells for all clones studied. The definition of dual peptide motifs and creation of bioactive covalent I-A(g7)-B:9-23 should facilitate studies of the pathogenic significance and antigen recognition by B:9-23 reactive diabetogenic T cells.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0896-8411
pubmed:author
pubmed:copyrightInfo
Copyright 2000 Academic Press.
pubmed:issnType
Print
pubmed:volume
14
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
231-7
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Dual overlapping peptides recognized by insulin peptide B:9-23 T cell receptor AV13S3 T cell clones of the NOD mouse.
pubmed:affiliation
Barbara Davis Center for Childhood Diabetes, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't