Abstract:
:Stimulation of T cells via the T cell receptor (TCR) leads to an increase intracellular in free Ca2+ levels ([Ca2+]i) and the activation of the MAP kinase signaling pathway. This study analyzes for the first time Ca2+ fluxes in naive cytotoxic T cells stimulated with full agonists, partial agonists, or antagonists. Four different types of Ca2+ responses could be observed. Full agonists triggered a strong and sustained increase in [Ca2+]i. In contrast, partial T cell agonists induced either a strong but transient Ca2+ flux or very low to no increases in [Ca2+]i, while T cell antagonists failed to induce any measurable Ca2+ flux. The ability of peptides to induce elevated [Ca2+]i perfectly paralleled their ability to trigger TCR internalization and T cell activation. Thus, stimulation of naive cytotoxic T cells with a panel of defined altered peptide ligands reveals a consistent picture, where Ca2+ fluxes predict agonist, partial agonist and antagonist properties of peptides.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Bachmann MF,Mariathasan S,Bouchard D,Speiser DE,Ohashi PSdoi
10.1002/eji.1830271241subject
Has Abstractpub_date
1997-12-01 00:00:00pages
3414-9issue
12eissn
0014-2980issn
1521-4141journal_volume
27pub_type
杂志文章abstract::Interleukin-5 (IL-5) plays a critical role in the pathogenesis of eosinophil-associated allergic disorders, such as asthma. IL-5 may also play a major role in the development of eosinophilia-associated lymphoproliferative disorders caused by human T lymphotropic virus type I (HTLV-I). In this study, we have investigat...
journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/1521-4141(200112)31:12<3694::aid-immu3694>
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830221143
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2005-04-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830250704
更新日期:1995-07-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2002-12-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830140110
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830221219
更新日期:1992-12-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830240205
更新日期:1994-02-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2018-04-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830271251
更新日期:1997-12-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.200636780
更新日期:2007-09-01 00:00:00
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journal_title:European journal of immunology
pub_type:
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更新日期:2010-07-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830171007
更新日期:1987-10-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.201243084
更新日期:2013-08-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830150321
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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更新日期:1995-04-01 00:00:00
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journal_title:European journal of immunology
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更新日期:1998-03-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
doi:10.1002/eji.1830260702
更新日期:1996-07-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2002-11-01 00:00:00
abstract::Immunodominant T cell epitopes from the autoantigen human cartilage glycoprotein 39 have previously been mapped in the context of HLA-DR*0401 and *0402, using mice expressing HLA-DR4 transgenes. We measured the dissociation rates of these epitopes from soluble recombinant DR*0401 and DR*0402 to assess the relationship...
journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:2001-05-01 00:00:00
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journal_title:European journal of immunology
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journal_title:European journal of immunology
pub_type: 杂志文章
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1985-05-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1993-09-01 00:00:00
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journal_title:European journal of immunology
pub_type: 杂志文章
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更新日期:1980-05-01 00:00:00