rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
6442
|
pubmed:dateCreated |
1993-10-8
|
pubmed:abstractText |
Tyrosine protein phosphorylation is necessary for antigen receptor-mediated activation of T lymphocytes. This signal is generated at least in part by the Src-related tyrosine protein kinases p56lck and p59fynT (refs 2, 3). The activity of these two enzymes is repressed by phosphorylation of a conserved carboxy-terminal tyrosine residue. Recent studies suggest that this inhibitory phosphorylation may be caused by p50csk (for C-terminal Src kinase), a tyrosine protein kinase which accumulates most abundantly in thymus and spleen. To investigate the function of Csk in T lymphocytes and characterize the processes regulating T-cell receptor (TCR) signalling, we examined the effects of overexpression of Csk on the physiology of an antigen-specific mouse T-cell line. We report here that p50csk negatively regulates TCR-induced tyrosine protein phosphorylation and lymphokine production. This provides evidence for the involvement of Csk in the regulation of T-cell activation.
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pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Sep
|
pubmed:issn |
0028-0836
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
9
|
pubmed:volume |
365
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
156-60
|
pubmed:dateRevised |
2011-11-2
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pubmed:meshHeading |
pubmed-meshheading:8371758-Animals,
pubmed-meshheading:8371758-Base Sequence,
pubmed-meshheading:8371758-Cell Line,
pubmed-meshheading:8371758-Cloning, Molecular,
pubmed-meshheading:8371758-DNA,
pubmed-meshheading:8371758-Humans,
pubmed-meshheading:8371758-Interleukin-2,
pubmed-meshheading:8371758-Molecular Sequence Data,
pubmed-meshheading:8371758-Phosphorylation,
pubmed-meshheading:8371758-Protein-Tyrosine Kinases,
pubmed-meshheading:8371758-Rats,
pubmed-meshheading:8371758-Receptors, Antigen, T-Cell,
pubmed-meshheading:8371758-Signal Transduction,
pubmed-meshheading:8371758-Tyrosine,
pubmed-meshheading:8371758-src-Family Kinases
|
pubmed:year |
1993
|
pubmed:articleTitle |
Negative regulation of T-cell receptor signalling by tyrosine protein kinase p50csk.
|
pubmed:affiliation |
McGill Cancer Centre, McGill University, Montreal, Canada.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|