title: Tumor-derived interleukin-2-dependent lymphocytes in adoptive immunotherapy of lung cancer.
abstract: A trial of adoptive immunotherapy was performed in which long-term cultured, interleukin-2 (IL2)-dependent T-lymphocytes were administered to patients with metastatic adenocarcinoma of the lung. Lymphocytes were isolated from explants of cancer tissues that were cultured in medium with recombinant IL-2. These T-cells expressed surface markers of activation, and killed a broad panel of tumor targets. Intravenously injected 111indium-labeled T-cell blasts distributed primarily to lungs, liver, and spleen. Despite a paucity of infused lymphocytes detected by external imaging at sites of tumor, five of seven patients showed reduction of their cancers. However, in no case was greater than 50% reduction of total tumor burden achieved. Evidence of increased delayed cutaneous hypersensitivity to protein antigens was observed in three patients following therapy. We conclude that long-term cultured tumor-derived T-cells can be transferred safely into humans and that these cells may be capable of enhancing immune responses and mediating tumor reduction in vivo.
mesh_terms: D000230:Adenocarcinoma / Q000276:immunology / Q000473:pathology / Q000628:therapy*; D000328:Adult; D000368:Aged; D006801:Humans; D007116:Immunization, Passive; D007167:Immunotherapy; D007376:Interleukin-2 / Q000494:pharmacology*; D008175:Lung Neoplasms / Q000276:immunology / Q000473:pathology / Q000628:therapy*; D008214:Lymphocytes / Q000276:immunology*; D008875:Middle Aged; D009362:Neoplasm Metastasis
chemical_list: D007376:Interleukin-2