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  • 1
    ISSN: 1432-0851
    Keywords: Melanoma ; MAGE-1 ; Tumor-infiltrating lymphocytes ; Immunotherapy ; Peptide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The MAGE-1 gene encodes a tumor-specific antigen, MZ2-E, which is recognized by cloned, specific cytolytic T cells (CTL) derived from the peripheral blood of a patient with melanoma. We have produced a MAGE-1-specific CTL line derived from the tumor-infiltrating lymphocytes (TIL) of a melanoma patient by weekly restimulation with autologous EBV-B cells pulsed with the synthetic HLA-A1-restricted MAGE-1 epitope nonapeptide EADPTGHSY. The 1277. A TIL line grew in long-term culture in low-dose interleukin-2 (IL-2) and IL-4, and exhibited antigen-specific, MHC-class-I-restricted lysis of HLA-A1-bearing MAGE-1+ cell lines. Cytolysis of target cells pulsed with the synthetic MAGE-1 decapeptide KEADPTGHSY was superior to that of cells pulsed with the immunodominant nonapeptide. Single amino-acid or even side-chain substitutions in the immunodominant nonamer abrogated cytolysis. 1277. A TIL specifically secreted tumor necrosis factor α after co-incubation with HLA-A1-expressing MAGE-1+ cell lines or fresh tumor. These data suggest that tumor-antigen-specific, MHC-restricted CTL may be grown from TIL in the presence of synthetic epitope peptides and expanded for adoptive immunotherapy in melanoma patients.
    Type of Medium: Electronic Resource
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