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. 1991 May;82(5):585-92.
doi: 10.1111/j.1349-7006.1991.tb01890.x.

Suppressive activity of interleukin 4 on the induction of antigen-specific cytotoxic T cells in humans

U Yamashita  1 , Y Tanaka
Affiliations

Suppressive activity of interleukin 4 on the induction of antigen-specific cytotoxic T cells in humans

U Yamashita et al. Jpn J Cancer Res. 1991 May.

Abstract

The effect of interleukin 4 (IL 4) on the induction of cytotoxic T cells (CTL) was studied by using human peripheral blood lymphocytes in vitro. IL 4 suppressed the induction of CTL specific for allogeneic antigens in a concentration-dependent manner. However, IL 4 did not suppress proliferative responses induced with allogeneic antigens or mitogens. The suppressive effect of IL 4 on CTL induction was observed when IL 4 was added at the early period of the CTL induction culture, but not at the later period. Furthermore, IL 4 did not suppress the effector function of CTL to target cells. IL 4 suppressed the production of IL 1 by monocytes/macrophages and the production of IL 2 and the expression of IL 2 receptors on T cells. Moreover, IL 4 suppressed the induction of lymphokine-activated killer cells. These results suggest that IL 4 has a suppressive activity on the induction of killer cells in humans.

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