Expression Pattern of Immunoproteasome Subunits in Human Thymus
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The expression pattern of immunoproteasomes in human thymus has not been analyzed but may have important consequences during thymic selection. Here we examined the expression patterns of immunoproteasome subunits in fetal and adult thymic tissues by immunohistochemistry and found that all three subunits are expressed in both cortical and medullary stromal cells. These data suggest that thymic selection in human can be affected by peptide repertoires generated by immunoproteasomes.
Abstract
The expression pattern of immunoproteasomes in human thymus has not been analyzed but may have important consequences during thymic selection. Here we examined the expression patterns of immunoproteasome subunits in fetal and adult thymic tissues by immunohistochemistry and found that all three subunits are expressed in both cortical and medullary stromal cells. These data suggest that thymic selection in human can be affected by peptide repertoires generated by immunoproteasomes.
참고문헌 (15)
- Starr TK, "Positive and negative selection of T cells", Annu Rev Immunol, 21, pp.139~176 (2003)
- Siggs OM, "The why and how of thymocyte negative selection", Curr Opin Immunol, 18, pp.175~183 (2006)
- Cosgrove D, "The thymic compartment responsible for positive selection of CD4+ T cells", Int Immunol, 4, pp.707~710 (1992)
- Anderson G, "Lymphostromal interactions in thymic development and function", Nat Rev Immunol, 1, pp.31~40 (2001)
- Kloetzel PM, "Proteasome and peptidase function in MHC-class-I-mediated antigen presentation", Curr Opin Immunol, 16, pp.76~81 (2004)
- Fruh K, "Displacement of housekeeping proteasome subunits by MHC-encoded LMPs: a newly discovered mechanism for modulating the multicatalytic proteinase complex", Embo J, 13, pp.3236~3244 (1994)
- Gaczynska M, "Peptidase activities of proteasomes are differentially regulated by the major histocompatibility complex-encoded genes for LMP2 and LMP7", Proc Natl Acad Sci U S A, 91, pp.9213~9217 (1994)
- Tanaka K, "The MHC class I ligand-generating system: roles of immunoproteasomes and the interferongamma-inducible proteasome activator PA28", Immunol Rev, 163, pp.161~176 (1998)
- Nil A, "Expression of housekeeping and immunoproteasome subunit genes is differentially regulated in positively and negatively selecting thymic stroma subsets", Eur J Immunol, 34, pp.2681~2689 (2004)
- Chen W, "Immunoproteasomes shape immunodominance hierarchies of antiviral CD8(+) T cells at the levels of T cell repertoire and presentation of viral antigens", J Exp Med, 193, pp.1319~1326 (2001)
- Toes RE, "Discrete cleavage motifs of constitutive and immunoproteasomes revealed by quantitative analysis of cleavage products", J Exp Med, 194, pp.1~12 (2001)
- Bandoh N, "Development and characterization of human constitutive proteasome and immunoproteasome subunit-specific monoclonal antibodies", Tissue Antigens, 66, pp.185~194 (2005)
- Niedermann G, "Immunological functions of the proteasome", Curr Top Microbiol Immunol, 268, pp.91~136 (2002)
- Jameson SC, "Positive selection of thymocytes", Annu Rev Immunol, 13, pp.93~126 (1995)
- Barton GM, "Requirement for diverse, lowabundance peptides in positive selection of T cells", Science, 283, pp.67~70 (1999)
