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  • Title: [An efficient methods for the induction of human antitumor effector CD4+ and CD8+ T cells: their application to tumor immunotherapy].
    Author: Nishimura T, Kuge S, Watanabe K, Lee U, Yahata T, Habu S.
    Journal: Hum Cell; 1994 Sep; 7(3):131-7. PubMed ID: 7873496.
    Abstract:
    It is an important issues to investigate an efficient methods to induce antitumor effector T cells from peripheral blood lymphocytes of tumor patients for the development of a novel tumor immunotherapy. We established a large scale culture system of human CD4+ helper/killer T cells which have both helper and killer functions. Targeting of CD4+ helper/killer T cells to tumor using anti-CD3 x anti-c-erbB-2 mAb caused the lysis of tumor and triggering of IL-2 production. It was also demonstrated that culture of human CD4+ T cells with staphylococcal enterotoxin A (SEA) or IL-12 caused a selective induction of Th1 type of CD4+ helper/killer T cells. IL-12 also revealed a novel effect on CD8+CTL functions. Culture of CD8+ T cells with IL-12 resulted in the augmentation of IFN-gamma production and cytotoxicity. Moreover, culture of tumor-infiltrating lymphocytes with IL-12 caused a marked enhancement of CD8+CTL against autologous tumor cells. These findings suggest that IL-12 will become a useful cytokine for the tumor immunotherapy. In this paper, we will discuss the key role of CD4+ T cells for the induction of antitumor immunity in tumor-bearing host.
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