Significant enlargement of a specific subset of CD3+CD8+ peripheral blood leukocytes mediating cytotoxic T-lymphocyte activity during human immunodeficiency virus infection
| Autor: | Djaouida Bengoufa, Claire Rabian, Gérald Leca, Armand Bensussan, Valérie Schiavon, Laurence Boumsell |
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| Rok vydání: | 1993 |
| Předmět: |
Cytotoxicity
Immunologic Cellular immunity CD3 Complex CD8 Antigens CD3 Population HIV Infections Immunofluorescence Leukocyte Count T-Lymphocyte Subsets medicine Humans Cytotoxic T cell education Immunity Cellular education.field_of_study Multidisciplinary biology medicine.diagnostic_test Antibodies Monoclonal T lymphocyte Immunology biology.protein Antibody CD8 Research Article T-Lymphocytes Cytotoxic |
| Zdroj: | Proceedings of the National Academy of Sciences. 90:9427-9430 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.90.20.9427 |
| Popis: | We have obtained a monoclonal antibody termed BY55 that defines an 80-kDa cell-surface structure on a subset of circulating peripheral blood mononucleocytes. This structure, which was not detected on most cell lines or activated lymphocytes, was expressed exclusively on 15-25% of CD2+ circulating lymphocytes, including a major subset within the CD3- and the T-cell receptor gamma delta + lymphocytes and a small percentage of the CD3+CD8+ cells. Moreover, we have shown that the BY55 molecule delineated the competent killer circulating lymphocytes. In the present report, additional two- and three-color immunofluorescence studies of peripheral blood lymphocytes were done to precisely determine BY55 expression within the T-cell population. In normal individuals, peripheral blood CD3+CD8+BY55+ cells represented only 5-6% of the lymphocytes, and these cells possessed cytolytic activity. Interestingly, we found that the percentage of total BY55+ lymphocytes as well as the percentage of CD3+CD8+BY55+ was significantly increased in peripheral blood lymphocytes of human immunodeficiency virus-seropositive individuals. |
| Databáze: | OpenAIRE |
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