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    Quantitation of proliferative and cytotoxic precursor cells directed against human tumours: limiting dilution analysis in peripheral blood and at the tumour site.

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    Authors
    Vose, Brent M
    Affiliation
    Paterson Laboratories, Christie Hospital and Holt Radium Institute, Withington, Manchester, M20 9BX, UK
    Issue Date
    1982-08-15
    
    Metadata
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    Abstract
    Blood and tumour-infiltrating lymphocytes (TIL) from 16 cancer patients have been examined under limiting dilution conditions to determine the frequency of cells responding in mixed tumour-lymphocyte cultures (MLTC) to autologous tumour and Interleukin-2 (IL-2). Tumour-derived lymphocytes showed a high spontaneous response to IL-2 alone 1/1,900 in TIL; 1/6,000 in PBL suggesting the presence of "activated" T cells in situ. Proliferative frequencies were increased in MLTC in both blood (1/3,779) and TIL (1/1,084). Phenotypic analyses showed that total T-cell contents of the responder populations were comparable but TIL were enriched for the OKT8+ subset with a corresponding reduction in OKT4+. TIL showed increased numbers of OKMI+ and Tac+ lymphocytes. The major cytotoxic precursor expanding under these conditions was reactive against autologous tumour. K562 (NK) were present at a lesser frequency--particularly in TIL. The data show a concentration and activation of reactive lymphocytes at the tumour site and establish conditions for the clonal expansion of specifically cytotoxic T cells.
    Citation
    Quantitation of proliferative and cytotoxic precursor cells directed against human tumours: limiting dilution analysis in peripheral blood and at the tumour site. 1982, 30 (2):135-42 Int J Cancer
    Journal
    International Journal of Cancer
    URI
    http://hdl.handle.net/10541/129531
    DOI
    10.1002/ijc.2910300202
    PubMed ID
    6215363
    Type
    Article
    Language
    en
    ISSN
    0020-7136
    ae974a485f413a2113503eed53cd6c53
    10.1002/ijc.2910300202
    Scopus Count
    Collections
    All Paterson Institute for Cancer Research

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