Abstract:
:Using the patch-clamp technique in combination with fluorescence microscopy we have found an abnormality in voltage-gated K+ channel expression in T cells that represents the first molecular marker linking three disparate autoimmune diseases in mice. CD4-CD8-Thy-1.2+ (double-negative or DN) lymphocytes from every known murine model for systemic lupus erythematosus, type-1 diabetes mellitus and experimental allergic encephalomyelitis exhibit abnormally high numbers of an unusual K+ channel, termed type l compared to their phenotypic counterparts in normal mice. Other T cell subsets from these diseased mice retain their normal pattern of K+ channel expression. The unique K+ channel phenotype of DN T cells arises in parallel with the onset of autoimmunity. Although mitogen-activated T cells and rapidly proliferating thymocytes exhibit large numbers of K+ channels, these channels are of an electrophysiologically distinct type called n. Thus, abundant expression of type l K+ channels appears to be a useful marker for DN T cells associated with autoimmunity and may provide a valuable tool for delineating the role of DN T cells in the pathogenesis of autoimmune diseases.
journal_name
Eur J Immunoljournal_title
European journal of immunologyauthors
Chandy KG,Cahalan MD,Grissmer Sdoi
10.1002/eji.1830200406subject
Has Abstractpub_date
1990-04-01 00:00:00pages
747-51issue
4eissn
0014-2980issn
1521-4141journal_volume
20pub_type
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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journal_title:European journal of immunology
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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
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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
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更新日期:1996-02-01 00:00:00
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journal_title:European journal of immunology
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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,评审
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journal_title:European journal of immunology
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更新日期:1990-04-01 00:00:00