Linked Life Data

2967863

Source:http://linkedlifedata.com/resource/pubmed/id/2967863

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-7-26
pubmed:abstractText
A series of class II MHC-restricted keyhole limpet hemocyanin-specific Th cell clones were examined for cytoplasmic granules by histochemical techniques and fractionation of their homogenates. All showed granules containing lysosomal enzymes and high levels of trypsin-like activity revealed by a N-alpha-benzyloxycarbonyl-L-lysine thiobenzyl ester-esterase assay. Using the latter as a marker for granule contents, granule secretion was observed in response to MHC-restricted, Ag-dependent signals presented in vitro, and correlated well with T cell activation as measured by proliferation. However, human rIL-2, a strong inducer of T cell proliferation, did not stimulate N-alpha-benzyloxycarbonyl-L-lysine thiobenzyl ester-esterase secretion by itself, nor did it influence the secretion mediated by Ag. Other factors found to induce secretion included immobilized antibodies directed against determinants of the TCR complex, as well as Con A. These results suggest that granule enzyme secretion is another indicator of TCR-mediated activation and provides a possible mechanism for Th cell function via a rapid, local delivery of granule contents to adjacent cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
1
pubmed:volume
141
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
T helper cell cytoplasmic granules. Exocytosis in response to activation via the T cell receptor.
pubmed:affiliation
Immunology Branch, National Cancer Institute, Bethesda, MD 20892.
pubmed:publicationType
Journal Article