Cutting Edge: Lipid Raft Integrity Affects the Efficiency of MHC Class I Tetramer Binding and Cell Surface TCR Arrangement on CD8+ T Cells
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- Donald R. Drake
- *Beirne B. Carter Center for Immunology Research, and
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- Thomas J. Braciale
- *Beirne B. Carter Center for Immunology Research, and
説明
<jats:title>Abstract</jats:title> <jats:p>Physically distinct cholesterol/sphingolipid-rich plasma membrane microdomains, so-called lipid rafts, have been recognized to play an important regulatory role in various cellular processes, from membrane trafficking to signal transduction, in a number of cell types. We report here that the ability of TCR on activated, functional CD8+ T lymphocytes to efficiently bind MHC class I tetramer complexes is dependent on the integrity of lipid rafts on the T lymphocyte membrane. We further provide evidence that TCR interact (associate) with lipid raft elements on the T cell surface before receptor engagement and that the topological arrangement of TCR on the cell surface is likewise influenced by lipid raft integrity.</jats:p>
収録刊行物
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- The Journal of Immunology
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The Journal of Immunology 166 (12), 7009-7013, 2001-06-15
The American Association of Immunologists