Characterization of novel anti-tumor effector cells in long-term cultures of human tumor-infiltrating lymphocytes |
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Authors: | T L Whiteside D S Heo S Takagi R B Herberman |
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Affiliation: | Department of Pathology, University of Pittsburgh, PA. |
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Abstract: | TIL were isolated from human solid tumors and cultured in rIL 2. Long-term TIL lines from primary tumors showed a shorter lag period, better expansion, and higher anti-tumor activity in vitro than those from metastatic tumors. The anti-tumor effector cells in TIL and A-PBL cultures had CD3+ Leu 19+ and CD3- Leu19+ phenotypes and morphology consistent with LGL/LAK cells. These cells mediated lysis of both autologous and allogeneic fresh tumor cell targets, while CD3+ Leu19- cells had little or no antitumor cytotoxicity. |
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