title: Injury to autologous normal tissues and tumors mediated by lymphokine-activated killer (LAK) cells generated in vitro from peripheral blood mononuclear cells of glioblastoma patients.
abstract: Activation of peripheral blood mononuclear cells (PBMC) with IL-2 generates lymphokine-activated killer (LAK) cells that show a broad target cell range. In adoptive immunotherapy using in vitro-generated LAK cells, the intensity and specificity of their cytotoxic activity affect the prognosis of cancer patients. The present study was designed to examine the tumor-specific spectrum of T lymphocytes generated from the PBMC of patients with recurrent glioblastoma by in vitro propagation with IL-2 plus either soluble or solid-phase anti-CD3 monoclonal antibody (MAb) in short-term or long-term cultures. Both short-term and long-term culturing with solid-phase anti-CD3 MAb plus IL-2 yielded broad-reactivity CD8+ alphabetaT and gammadeltaT lymphocytes, both of which were non-MHC restricted, as shown by the fact that they were able to lyse autologous glioblastoma cells, MHC class I+II- allogeneic glioblastoma cells, and MHC class I-II-NK-sensitive K562 target cells. More importantly, these cells from patients failed to lyse fresh autologous PBMC. These results demonstrate that cells generated using this approach are non-MHC-restricted LAK cells and exhibit marked tumor specificity. In contrast, incubation with soluble anti-CD3 MAb generated T lymphocytes that after long-term culture, were either CD4+ or CD8+. These caused significant lysis of both allogeneic and autologous glioblastoma target cells, the extent of lysis being greater than that using cells produced by culturing with the solid-phase MAb. However, both the CD4+ and CD8+ cells also caused greater lysis of autologous normal PBMC, indicating that cells generated using this approach may cause significant adverse reactions in cancer patients if used for immunotherapy.
authors: RIKEN Cell Bank, the Institute of Physical and Chemical Research, Tsukuba, Japan.
authors: Y
authors: Y
authors: Fujimiya
authors: Y
authors: Y
authors: Suzuki
authors: R
authors: R
authors: Katakura
authors: T
authors: T
authors: Ohno
mesh_terms: D000293:Adolescent; D000328:Adult; D000911:Antibodies, Monoclonal / Q000276:immunology; D000951:Antigens, Neoplasm / Q000276:immunology; D017252:CD3 Complex / Q000276:immunology / Q000378:metabolism; D002478:Cells, Cultured; D002648:Child; D018920:Coculture Techniques; D003602:Cytotoxicity, Immunologic; D005434:Flow Cytometry; D005909:Glioblastoma / Q000097:blood / Q000276:immunology*; D015395:Histocompatibility Antigens Class I / Q000032:analysis; D000949:Histocompatibility Antigens Class II / Q000032:analysis; D006801:Humans; D007376:Interleukin-2 / Q000494:pharmacology; D015979:Killer Cells, Lymphokine-Activated / Q000276:immunology*; D007963:Leukocytes, Mononuclear / Q000276:immunology*; D012995:Solubility; D013601:T-Lymphocytes / Q000276:immunology; D014407:Tumor Cells, Cultured
chemical_list: D000911:Antibodies, Monoclonal; D000951:Antigens, Neoplasm; D017252:CD3 Complex; D015395:Histocompatibility Antigens Class I; D000949:Histocompatibility Antigens Class II; D007376:Interleukin-2