Abstract
In the present study T lymphocytes isolated from a metastatic lymph node (T-LNL) of a melanoma patient have been cloned. In the attempt to verify whether T-LNL may acquire in vitro functional activities in the absence of tumour-associated antigens, they were cloned utilizing allogeneic lymphocytes as feeder cells. Nineteen clones generated from T-LNL proved to be CD4+ and, among these, five were able to kill autologous and allogeneic human melanoma cells in HLA-class-II-restricted way. On the basis of their cytokine production, these CD4+ cytolytic T-LNL clones were shown to belong to the Th0 subset and three of them expersseed the Vβ17 chain of the T cell receptor. These results suggest the presence of melanomaspecific but functionally inactive lymphocytes with T cell receptor oligoclonality in the lymph node environment. These specific T cells may acquire in vitro the capacity to kill autologous and allogeneic tumours without any induction by autologous melanoma cells.
Original language | English |
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Pages (from-to) | 210-216 |
Number of pages | 7 |
Journal | Cancer Immunology, Immunotherapy |
Volume | 41 |
Issue number | 4 |
DOIs | |
Publication status | Published - Jul 1995 |
Keywords
- Cr release
- Cytokines
- Lymph node
- Lymphocytes
- Tumour
ASJC Scopus subject areas
- Oncology
- Immunology
- Cancer Research