Enhanced expression of HLA molecules and stimulation of autologous human tumor infiltrating lymphocytes following transduction of melanoma cells with γ-interferon genes

Masahiro Ogasawara, Steven A. Rosenberg

Research output: Contribution to journalArticle

Abstract

Gene therapy for cancer is being tested in clinical trials using tumor-infiltrating lymphocytes (TIL) or tumor cells modified by the insertion of genes coding for interleukin 2 or tumor necrosis factor a. In the present study, we investigated the feasibility of transducing human tumor cells with genes coding for γ-interferon (IFNγ) or α-interferon (IFNα), which are iwo other cytokines that can enhance host antitumor immune responses. Tumor cells from 12 melanoma and 2 renal cell carcinoma patients were transduced with retroviral vectors containing the gene for IFNγ. Northern blot analysis showed IFNγ transcripts only in the IFNγ gene-transduced cells. In both IFNγ-secreting and non-secreting tumor lines, the cell surface expression of HLA class I and class II molecules increased following transduction. However, the magnitude of the increase in HLA expression appeared to be greater in tumor lines secreting IFNγ. Two melanoma cell lines were successfully transduced with an IFNα retroviral vector. Melanoma cells transduced with the IFNα gene contained IFNα RNA transcripts and secreted large amounts of IFNα. In contrast to cells transduced with the IFNγ gene, the expression of HLA class II molecules was not increased in the IFNα gene-transduced cells. Finally, we tested the ability of HLA.DR+ melanoma cells, which had been transduced with the IFNγ gene, to stimulate specific cytokine release by autologous CD4+ TIL. Specific secretion of cytokine by TIL occurred when the TIL and IFNγ gene-transduced tumor cells were cultured together but not when TIL were cultured alone or with control nontransduced tumor cells. These results suggest that molecules newly expressed on the transduced cells promoted antigen presentation and T-cell responses against the transduced tumor cells. The insertion of the IFNγ gene into melanoma cells may be useful either for active immunization against melanoma or for the generation of TIL to be used in adoptive immunotherapy.

Original languageEnglish (US)
Pages (from-to)3561-3568
Number of pages8
JournalCancer Research
Volume53
Issue number15
StatePublished - Aug 1 1993
Externally publishedYes

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Tumor-Infiltrating Lymphocytes
Interferons
Melanoma
Genes
Neoplasms
Insertional Mutagenesis
Cytokines
Cultured Tumor Cells
Adoptive Immunotherapy
Antigen Presentation

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Enhanced expression of HLA molecules and stimulation of autologous human tumor infiltrating lymphocytes following transduction of melanoma cells with γ-interferon genes. / Ogasawara, Masahiro; Rosenberg, Steven A.

In: Cancer Research, Vol. 53, No. 15, 01.08.1993, p. 3561-3568.

Research output: Contribution to journalArticle

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