Recognition of the Epstein-Barr virus-encoded nuclear antigens EBNA-4 and EBNA-6 by HLA-A11-restricted cytotoxic T lymphocytes: implications for down-regulation of HLA-A11 in Burkitt lymphoma.
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- R Gavioli
- Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.
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- P O De Campos-Lima
- Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.
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- M G Kurilla
- Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.
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- E Kieff
- Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.
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- G Klein
- Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.
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- M G Masucci
- Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden.
抄録
<jats:p>Evasion from cytotoxic T-lymphocyte (CTL) surveillance may be an important step in the pathogenesis of Epstein-Barr virus (EBV)-carrying Burkitt lymphoma (BL) as suggested by the consistent down-regulation of all transformation-associated viral antigens, except EBV nuclear antigen 1 (EBNA-1), and of certain HLA class I alleles in BL biopsies and cell lines that maintain the tumor cell phenotype in vitro. The most common HLA class I defect recorded in BL lines is a selective down-regulation of HLA-A11. To gain some insight into the role of HLA-A11 down-regulation in pathogenesis of BL, we have investigated the target specificity of HLA-A11-restricted CTLs derived by stimulation of lymphocytes from three EBV-seropositive individuals with autologous EBV-transformed lymphoblastoid cell lines. Recombinant vaccinia viruses carrying the coding sequences for EBNA-1, -2A, -2B, -5, -3, -4, and -6 (also known as EBNA-1, -2A, -2B, -LP, -3a, -3b, and -3c, respectively) and EBV latent membrane protein 1 were used to induce high levels of expression of the relevant EBV antigen in fibroblasts derived from HLA class I-matched individuals. EBNA-4-expressing fibroblasts were the predominant target of HLA-A11-restricted CTLs in all three donors. A less pronounced and less regular EBNA-6-specific cytotoxic component was found in two of the donors.</jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 89 (13), 5862-5866, 1992-07
Proceedings of the National Academy of Sciences
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詳細情報 詳細情報について
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- CRID
- 1361699993958249088
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- NII論文ID
- 30016291600
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- ISSN
- 10916490
- 00278424
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