Selective lysis of the autologous tumor by delta TCS1+ gamma/delta+ tumor-infiltrating lymphocytes from human lung carcinomas

Eur J Immunol. 1990 Dec;20(12):2685-9. doi: 10.1002/eji.1830201224.


Two distinct non-overlapping populations of TcR1+ (gamma/delta) T cells have been described: the first, bearing the disulfide-linked gamma/delta heterodimer, is predominant in the peripheral blood; the second, expressing the non-disulfide-linked form of TcR1, is mostly confined to epithelial tissues (lung, gut, skin). TcR1+ lymphocytes may be cytotoxic and could be involved in anti-tumor immunity, especially against tumors at epithelial sites. Freshly derived tumor-infiltrating lymphocytes (TIL) obtained from two patients with lung cancer were enriched in CD3+WT31- cells. The percentage of this subset substantially increased upon culture in the presence of interleukin 2. These cells were TcR1+ as demonstrated by immunofluorescence and immunoprecipitation. In one case only 40% of this population reacted with delta TCS1 mAb, that recognizes the non-disulfide-linked form of TcR1, and co-expressed the CD8 antigen. Cultured TcR1+ TIL were able to kill fresh autologous tumor cells, K-562 and, to a lesser extent, some natural killer-resistant cell lines and allogeneic lung tumor cells in 4-h 51Cr-release cytotoxicity assays. The fractionated delta TCS1+ TIL lysed only autologous tumor cells and K-562, whereas the lytic activity against all the other targets was confined to the delta TCS1- subset. Moreover, the autotumor cytotoxicity was inhibited by anti-HLA class I but not by anti-CD1c or anti-LFA-1 mAb, suggesting that killing of the autologous tumor cells and non-major histocompatibility complex-restricted cytotoxicity are mediated by different mechanisms.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antibodies, Monoclonal
  • Antigens, CD / analysis
  • Antigens, CD1
  • Antigens, Differentiation / immunology
  • Carcinoma / immunology*
  • Cell Line
  • Cytotoxicity, Immunologic
  • Histocompatibility Antigens Class I / immunology
  • Humans
  • Immunity, Cellular
  • In Vitro Techniques
  • Lung Neoplasms / immunology*
  • Lymphocytes, Tumor-Infiltrating / immunology*
  • Precipitin Tests
  • Receptors, Antigen, T-Cell / classification
  • Receptors, Antigen, T-Cell / immunology*
  • T-Lymphocyte Subsets / immunology*


  • Antibodies, Monoclonal
  • Antigens, CD
  • Antigens, CD1
  • Antigens, Differentiation
  • Histocompatibility Antigens Class I
  • Receptors, Antigen, T-Cell