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. 1983 Oct;48(4):507–514. doi: 10.1038/bjc.1983.223

Treatment of fresh human leukaemia cells with actinomycin D enhances their lysability by natural killer cells.

H W Ziegler-Heitbrock, J Erhardt, G Riethmüller
PMCID: PMC2011504  PMID: 6626451

Abstract

Human leukaemia cells isolated from peripheral blood were employed as targets for natural killer (NK) cells obtained from healthy donors and the effect of pretreatment of leukaemia cells with Actinomycin D on lysability was analysed in a chromium release assay. In 8/14 leukaemia cell samples a substantial enhancement of specific release could be repeatedly obtained by exposure of leukaemia targets to Actinomycin D for 4 h. The phenomenon was seen both with interferon-treated and untreated NK cells and could be demonstrated with fresh, as well as, liquid nitrogen stored leukaemia cells. In contrast, lysis of two leukaemia cell lines could not be further enhanced and no release was seen from normal lymphocyte targets or mitogen-induced blasts. Cold target inhibition studies indicate that enhanced killing is mediated by the same kind of natural killer cell, which is active against the Molt4 and K562 leukaemia cell lines.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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