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. 1981;9(5):219-25.
doi: 10.1007/BF00256890.

Effector cells in natural cytotoxicity against human bladder cancer cell lines

E T Bloom, M Dunsworth-Browne, D Durkos-Smith

Effector cells in natural cytotoxicity against human bladder cancer cell lines

E T Bloom et al. Urol Res. 1981.

Abstract

Human peripheral blood mononuclear cells obtained by ficoll-hypaque sedimentation were depleted of Fc-receptor-bearing (FcR+) cells. Cytotoxicity (direct killing of target cells by effector cells), tested in a 40 h assay, was significantly decreased against a variety of target cells. Tests in which no FcR+ cells could be detected were also positive for "natural killing" (NK) against a spectrum of target cells from normal donors. NK in this system was mediated by more than one subpopulation of lymphocytes. Monocytes probably did not play a significant role. Decreasing the FcR+ cells in peripheral blood mononuclear cells in patients with bladder cancer and in controls did not reveal specific antitumor activity.

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