SELECTIVE REDUCTION OF HUMAN TUMOR-CELL POPULATIONS BY HUMAN GRANULOCYTES INVITRO

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  • 1 January 1978
    • journal article
    • research article
    • Vol. 38  (12) , 4534-4539
Abstract
Human peripheral blood granulocytes at a 10:1 effector cell:target cell ratio were shown by an in vitro semiquantitative staining procedure to reduce the number of human tumor cells but not that of normal cells. Microscopic observations revealed that this selective reduction of tumor cells by granulocytes was a function of detachment and cytolysis. The cytotoxic effect of granulocytes on the tumor cells was confirmed by a quantitative 5-[125I]iodo-2-deoxyuridine release assay. Human granulocytes at a relatively low effector:target cell ratio (10:1) apparently have the capacity to recognize and destroy human tumor cells in vitro.

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