منابع مشابه
T-cell receptors: Feeling out the complex
Recent crystallographic studies show that the T-cell receptor has a largely immunoglobulin-like structure and binds to MHC-peptide complexes through loops from paired Valpha and Vbeta domains that focus on the central amino acids of the MHC-bound peptide, and to bacterial superantigens via peripheral aspects of the Vbeta domain.
متن کاملαβ T-cell receptors from multiple sclerosis brain lesions show MAIT cell–related features
OBJECTIVES To characterize phenotypes of T cells that accumulated in multiple sclerosis (MS) lesions, to compare the lesional T-cell receptor (TCR) repertoire of T-cell subsets to peripheral blood, and to identify paired α and β chains from single CD8(+) T cells from an index patient who we followed for 18 years. METHODS We combined immunohistochemistry, laser microdissection, and single-cell...
متن کاملCD1b tetramers bind αβ T cell receptors to identify a mycobacterial glycolipid-reactive T cell repertoire in humans
Microbial lipids activate T cells by binding directly to CD1 and T cell receptors (TCRs) or by indirect effects on antigen-presenting cells involving induction of lipid autoantigens, CD1 transcription, or cytokine release. To distinguish among direct and indirect mechanisms, we developed fluorescent human CD1b tetramers and measured T cell staining. CD1b tetramer staining of T cells requires gl...
متن کاملFas-Mediated Apoptosis Regulates the Composition of Peripheral αβ T Cell Repertoire by Constitutively Purging Out Double Negative T Cells
BACKGROUND The Fas pathway is a major regulator of T cell homeostasis, however, the T cell population that is controlled by the Fas pathway in vivo is poorly defined. Although CD4 and CD8 single positive (SP) T cells are the two major T cell subsets in the periphery of wild type mice, the repertoire of mice bearing loss-of-function mutation in either Fas (lpr mice) or Fas ligand (gld mice) is p...
متن کاملPresenilins regulate αβ T cell development by modulating TCR signaling
TCRalphabeta signaling is crucial for the maturation of CD4 and CD8 T cells, but the role of the Notch signaling pathway in this process is poorly understood. Genes encoding Presenilin (PS) 1/2 were deleted to prevent activation of the multiple Notch receptors expressed by developing thymocytes. PS1/2 knockout thymocyte precursors inefficiently generate CD4 T cells, a phenotype that is most pro...
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ژورنال
عنوان ژورنال: Immunity
سال: 2011
ISSN: 1074-7613
DOI: 10.1016/j.immuni.2011.11.002