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- W155752644 abstract "Substantial evidence has suggested that T cells play an important role in antitumor immunity. T cells with cytotoxic activity against tumors have been isolated from in vitro culture of tumor-infiltrated lymphocytes of cancer patients. In addition, clonal expansions of T cells have been identified in lesions of tumors by using a PCR-based CDR3 analysis of T cell receptors (TCR). Since the CDR3 region of the T cell receptor directly interacts with the antigen-MHC complex and is thus highly polymorphic, a dominant CDR3 length in a particular TCR Vβ population will indicate the clonal expansion of a specific T cell clone. Utilizing this technique, we have analyzed the T cell repertoire in lymph nodes (LNs) and peripheral blood of 20 breast cancer patients. Our results show that in most cases, peripheral blood mononuclear cells (PBMCs) and LN express dominant CD8+ T cell clones in different Vβ gene families, and the number of dominant clones is higher in PBMC than in the LN. Furthermore, in 7 out of 16 patients’ lymph nodes, there is a dominant Vβ18 T cell clonal expansion in the CD8+ T cell subset. The frequency of an oligoclonal expansion of Vβ18 CD8+ T cells in non-breast cancer lymph nodes is 1 out of 9, but no obvious motif in the CDR3 region of Vβ18 TCR can be identified. The prevalence of the clonal dominance found in breast cancer is discussed in the context of a possible tumor-related antigen stimulation." @default.
- W155752644 created "2016-06-24" @default.
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- W155752644 date "1997-12-01" @default.
- W155752644 modified "2023-10-14" @default.
- W155752644 title "Oligoclonality of CD8+ T Cells in Breast Cancer Patients" @default.
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- W155752644 doi "https://doi.org/10.1007/bf03401720" @default.
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