http://purl.uniprot.org/citations/20132973 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
http://purl.uniprot.org/citations/20132973 | http://www.w3.org/2000/01/rdf-schema#comment | "BackgroundToxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS) are severe, bullous cutaneous diseases with uncertain pathogenesis, although cytotoxic T cells seem to be involved. Natural killer (NK)-like activity has been found in blister infiltrates. Cytotoxic T lymphocytes (CTLs) with NK-like activity (NK-CTLs) have been shown to express T-cell receptors restricted by the HLA-Ib molecule HLA-E. Alternatively, the HLA-E-specific activating receptor CD94/NKG2C can trigger T-cell receptor-independent cytotoxicity in CTLs.ObjectiveOur aim was to test whether HLA-E expression sensitizes keratinocytes to killing by CTLs with NK-like activity and to explore the expression of activating receptors specific for HLA-E in blister cytotoxic lymphocytes.MethodsWe used flow cytometry and immunohistochemistry to analyze HLA-E expression in keratinocytes from affected skin in patients with SJS, TEN, and other less severe drug-induced exanthemas. The expression of CD94/NKG2C was analyzed by means of flow cytometry in PBMCs and blister cells from patients. PBMCs and blister cells were analyzed for their ability to kill HLA-E-expressing cells. Involvement of CD94/NKG2C in triggering degranulation of cytolytic cells was explored by means of CD107a mobilization assays and standard cytotoxicity chromium release assays.ResultsWe found that keratinocytes from affected skin expressed HLA-E and that cell-surface HLA-E sensitizes keratinocytes to killing by CD94/NKG2C(+) CTLs. Frequencies of CD94/NKG2C(+) peripheral blood T and NK cells were increased in patients with SJS and TEN during the acute phase. Moreover, activated blister T and NK lymphocytes expressed CD94/NKG2C and were able to degranulate in response to HLA-E(+) cells in an NKG2C-dependent manner.ConclusionCD94/NKG2C might be involved in triggering cytotoxic lymphocytes in patients with SJS and TEN."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.jaci.2009.10.030"xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/author | "Fiandor A."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/author | "Diaz R."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/author | "Morel E."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/author | "Bellon T."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/author | "Cabanas R."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/author | "Escamochero S."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/date | "2010"xsd:gYear |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/name | "J Allergy Clin Immunol"xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/pages | "703-710"xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/title | "CD94/NKG2C is a killer effector molecule in patients with Stevens-Johnson syndrome and toxic epidermal necrolysis."xsd:string |
http://purl.uniprot.org/citations/20132973 | http://purl.uniprot.org/core/volume | "125"xsd:string |
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