Linked Life Data

9147043

Source:http://linkedlifedata.com/resource/pubmed/id/9147043

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1997-7-7
pubmed:abstractText
Intrathymic maturation of T lymphocytes is characterized by variable expression of O-linked Gal beta 1,3GalNAc glycans reactive with peanut agglutinin (PNA) lectin. Recent studies on human thymocytes show that conversion from PNA+ to PNA- phenotype is correlated with increased expression of alpha 2,3 O-linked sialyltransferase (ST), which sialylates Gal beta 1,3GalNAc glycans, masking their binding sites for PNA. Interestingly, alpha 2,3 O-linked ST expression is highest within the regions of the thymus containing the most immature and most mature thymocyte subsets, suggesting that PNA-specific glycans are intermittently masked by sialylation during thymic selection processes. Here, we studied expression of PNA receptors on developing thymocytes in the murine system using thymocytes from both normal mice and transgenic mice that are genetically arrested at the early phases of T cell development. Our results confirm and extend recent findings in the human system by showing that murine T cells sequentially progress from PNAlo-->PNAhi-->PNAlo stages during their differentiation within the thymus. In addition, our data demonstrate that a similar set of polypeptides is variably masked by sialylation throughout T cell development.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0959-6658
pubmed:author
pubmed:issnType
Print
pubmed:volume
7
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
349-56
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Developmentally regulated expression of peanut agglutinin (PNA)-specific glycans on murine thymocytes.
pubmed:affiliation
Experimental Immunology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892-1260, USA.
pubmed:publicationType
Journal Article